103 results on '"Rico, María Teresa"'
Search Results
2. The Temporary Incapacity (TI) register as a complementary system to traditional epidemiological surveillance during the COVID-19 pandemic in Spain.
- Author
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Lévano, Dante Culqui, López, Sofía Escalona, Gherasim, Alín, Domínguez, Jesús Oliva, Rico, María Teresa Disdier, and Gómez, Montserrat García
- Subjects
COVID-19 pandemic ,LONGITUDINAL method ,PANDEMICS ,TIME management - Abstract
Introduction: During the COVID-19 pandemic, a set of social measures were adopted for the preservation of business activity and the protection of workers. One of these measures was issuing the Temporary Disability (TD) for COVID-19 cases, close contacts, and especially vulnerable workers. Objetive: This study analyzes whether the TD registry could be used as a complementary source to traditional epidemiological surveillance. Methods: A longitudinal study of time series was carried out with a cross-correlation analysis of TD and COVID-19 cases reported to the National Epidemiological Surveillance Network (RENAVE). The analysis included six pandemic waves between 10/03/2020 and 31/12/2021 in Spain. Cross-correlation coefficients (r) were calculated using a time lag of -14 days. Results: During the study period, 2,253,573 TD processes were recorded in Spain and 4,894,802 COVID-19 cases were reported to RENAVE. Significant positive correlations were observed at time lags of -7, -10, and -14, indicating that TD notification preceded RENAVE notification. In the first and sixth pandemic waves, TD notification preceded RENAVE by 12 and 7 days, respectively. Negative correlations between the two series were observed in the second and fourth waves, coinciding with a lower number of reported cases. In the third and fifth waves, TD notification also preceded RENAVE (lags -1, -5 and -14, -7, respectively). Conclusions: The results confirm the usefulness of TD registry as a complementary system to traditional epidemiological surveillance in Spain, by detecting COVID-19 cases in the 7, 10, and 14 days prior. A better positive correlation is observed in waves where more cases were reported. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Injectable hybrid hydrogels physically crosslinked based on carrageenan and green graphene for tissue repair
- Author
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Xunta de Galicia, Instituto de Salud Carlos III, European Commission, Universidad de La Coruña, Moncada, D., Rico, María Teresa, Montero, B., Rodríguez-Llamazares, Saddys, Feijoo-Bandín, Sandra, Gualillo, Oreste, Lago, Francisca, Aragón-Herrera, Alana, Salavagione, Horacio J., Pettinelli, Natalia, Bouza, R., Farrag, Yousuf, Xunta de Galicia, Instituto de Salud Carlos III, European Commission, Universidad de La Coruña, Moncada, D., Rico, María Teresa, Montero, B., Rodríguez-Llamazares, Saddys, Feijoo-Bandín, Sandra, Gualillo, Oreste, Lago, Francisca, Aragón-Herrera, Alana, Salavagione, Horacio J., Pettinelli, Natalia, Bouza, R., and Farrag, Yousuf
- Abstract
Injectable and biocompatible novel hybrid hydrogels based on physically crosslinked natural biopolymers and green graphene for potential use in tissue engineering are reported. Kappa and iota carrageenan, locust bean gum and gelatin are used as biopolymeric matrix. The effect of green graphene content on the swelling behavior, mechanical properties and biocompatibility of the hybrid hydrogels is investigated. The hybrid hydrogels present a porous network with three-dimensionally interconnected microstructures, with lower pore size than that of the hydrogel without graphene. The addition of graphene into the biopolymeric network improves the stability and the mechanical properties of the hydrogels in phosphate buffer saline solution at 37 °C without noticeable change in the injectability. The mechanical properties of the hybrid hydrogels were enhanced by varying the dosage of graphene between 0.025 and 0.075 w/v%. In this range, the hybrid hydrogels preserve their integrity during mechanical test and recover the initial shape after removing the applied stress. Meanwhile, hybrid hydrogels with graphene content of up to 0.05 w/v% exhibit good biocompatibility for 3T3-L1 fibroblasts; the cells proliferate inside the gel structure and show higher spreading after 48 h. These injectable hybrid hydrogels with graphene have promising future as materials for tissue repair.
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- 2023
4. Reconstrucción de la vegetación asociada al depósito tobáceo fluvial holoceno del Nogal de El Batán, Las Parras del Martín, Cordillera Ibérica
- Author
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Aranbarri, Josu, primary, Sancho Marcén, Carlos, primary, Arenas Abad, Concepción, primary, Bartolomé, Miguel, primary, Leunda, María, primary, Rico, María Teresa, primary, and González Sampériz, Penélope, primary
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- 2021
- Full Text
- View/download PDF
5. Climate and human impact on a meromictic lake during the last 6,000 years (Montcortès Lake, Central Pyrenees, Spain)
- Author
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Corella, Juan Pablo, Moreno, Ana, Morellón, Mario, Rull, Valentí, Giralt, Santiago, Rico, María Teresa, Pérez-Sanz, Ana, and Valero-Garcés, Blas Lorenzo
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- 2011
- Full Text
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6. Infliximab Paediatric Crohn’s Disease Educational Plan: A European, Cross-Sectional, Multicentre Evaluation
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Arana, Alejandro, Allen, Sam, Burkowitz, Jörg, Fantoni, Valerio, Ghatnekar, Ola, Rico, María Teresa, Vanhaverbeke, Nathalie, Wentworth, Charles E., Brosa, Max, and Arellano, Felix M.
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- 2010
- Full Text
- View/download PDF
7. Extreme Floods in Small Mediterranean Catchments: Long-Term Response to Climate Variability and Change
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Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Benito, Gerardo, Sánchez Moya, Yolanda, Medialdea, Alicia, Barriendos, Mariano, Calle, Mikel, Rico, María Teresa, Sopeña, Alfonso, Machado, María José, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Benito, Gerardo, Sánchez Moya, Yolanda, Medialdea, Alicia, Barriendos, Mariano, Calle, Mikel, Rico, María Teresa, Sopeña, Alfonso, and Machado, María José
- Abstract
Climate change implies changes in the frequency and magnitude of flood events. The influence of climate variability on flooding was evaluated by an analysis of sedimentary (palaeofloods) and documentary archives. A 500-year palaeoflood record at Montlleó River (657 km2 in catchment area), eastern Spain, revealed up to 31 palaeofloods with a range of discharges of 20–950 m3 s−1, and with at least five floods exceeding 740–950 m3 s−1. This information contrasts with the available gauged flood registers (since year 1971) with an annual maximum daily discharge of 129 m3 s−1. Our palaeoflood dataset indicates flood cluster episodes at (1) 1570–1620, (2) 1775–1795, (3) 1850–1890, and (4) 1920–1969. Flood rich periods 1 and 3 corresponded to cooler than usual (about 0.3 °C and 0.2 °C) climate oscillations, whereas 2 and 4 were characterised by higher inter-annual climatic variability (floods and droughts). This high inter-annual rainfall variability increased over the last 150 years, leading to a reduction of annual maximum flow. Flood quantiles (>50 years) calculated from palaeoflood+gauged data showed 30%–40% higher peak discharges than those using only instrumental records, whereas when increasing the catchment area (1500 km2) the discharge estimation variance decreased to ~15%. The results reflect the higher sensitivity of small catchments to changes on flood magnitude and frequency due to climate variability whereas a larger catchment buffers the response due to the limited extent of convective storms. Our findings show that extended flood records provide robust knowledge about hazardous flooding that can assist in the prioritization of low-regret actions for flood-risk adaptation to climate change.
- Published
- 2020
8. Intervenciones de enfermería para prevenir la sobrecarga del cuidador principal de personas con Alzheimer : revisión sistemática
- Author
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Saavedra Rico, María Teresa, Varela Feal, Nuria, and Universidade da Coruña. Facultade de Enfermaría e Podoloxía
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Enfermedad de Alzheimer ,Sobrecarga ,Cuidador ,Enfermería ,Estrés ,Intervención - Abstract
[Resumen] Objetivos El porcentaje de personas que presentan demencia, ha ido aumentando con los años, posiblemente debido a la prevalencia de población de edad avanzada y al aumento de la esperanza de vida. En cuanto a las demencias, la más común es la enfermedad de Alzheimer, que se caracteriza por la disminución progresiva de la capacidad cognitiva, conductual y psicológica del enfermo. El avance de la enfermedad, junto con el mayor grado de dependencia que experimentan los enfermos, hace necesaria la figura del cuidador principal. Este tipo de cuidado, provoca en el cuidador principal una experiencia de estrés continuo, debido al agotamiento físico y emocional provocado por la cantidad de horas dedicadas al cuidado del enfermo, además de asociarse con el desarrollo de otros problemas de salud. La sobrecarga que experimenta el cuidador principal, debe ser atendida por los profesionales de enfermería, de modo que, mediante diferentes tipos de intervenciones, se proporcione al cuidador los recursos necesarios para realizar lo mejor posible su tarea de cuidado, sin que repercuta de forma negativa en su calidad de vida. El objetivo de esta revisión sistemática será dar a conocer la eficacia de las diferentes intervenciones de enfermería para prevenir la sobrecarga del cuidador principal de pacientes con enfermedad de Alzheimer. Metodología Para realizar esta revisión sistemática se han consultado distintas bases de datos bilbiográficas con el fin de identificar los estudios más relevantes y tratar de conocer la evidencia científica existente actualmente acerca de la eficacia y el empleo de los diferentes tipos de intervenciones de enfermería para prevenir la sobrecarga de los cuidadores de personas con Alzheimer. La búsqueda se realiza en una base de datos especializada en revisiones sistemáticas (Biblioteca Cochrane Plus) y en bases de datos de artículos originales (Medline, Scopus, Cinahl y Web of Science), mediante la búsqueda con las palabras clave: “caregivers”, “Alzheimer disease” y “stress”. Resultados Tras la consulta en las distintas bases de datos se han preseleccinado un total de 76 artículos desde el año 2014 hasta la actualidad, de los cuales, 40 artículos han sido incluidos y 36 han sido excluidos, basándose en los criterios de selección establecidos y descartando los estudios duplicados. Conclusiones Existen varios tipos de intervenciones de enfermería para reducir la sobrecarga de los cuidadores de personas con EA. Entre las más eficaces se encuentran las multicomponente, que combinan en una sola, varias intervenciones y mediante un formato de entrega basado en los avances tecnológicos. También se consideran eficaces las intervenciones psicoeducativas, las psicosociales, las cognitivo conductuales, las formativas, los servicios de relevo y las que incorporan actividades de ocio. Traballo fin de grao (UDC.FEP). Enfermaría. Curso 2018/2019
- Published
- 2019
9. Intervenciones de enfermería para prevenir la sobrecarga del cuidador principal de personas con Alzheimer : revisión sistemática
- Author
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Universidade da Coruña. Facultade de Enfermaría e Podoloxía, Saavedra Rico, María Teresa, Universidade da Coruña. Facultade de Enfermaría e Podoloxía, and Saavedra Rico, María Teresa
- Abstract
[Resumen] Objetivos El porcentaje de personas que presentan demencia, ha ido aumentando con los años, posiblemente debido a la prevalencia de población de edad avanzada y al aumento de la esperanza de vida. En cuanto a las demencias, la más común es la enfermedad de Alzheimer, que se caracteriza por la disminución progresiva de la capacidad cognitiva, conductual y psicológica del enfermo. El avance de la enfermedad, junto con el mayor grado de dependencia que experimentan los enfermos, hace necesaria la figura del cuidador principal. Este tipo de cuidado, provoca en el cuidador principal una experiencia de estrés continuo, debido al agotamiento físico y emocional provocado por la cantidad de horas dedicadas al cuidado del enfermo, además de asociarse con el desarrollo de otros problemas de salud. La sobrecarga que experimenta el cuidador principal, debe ser atendida por los profesionales de enfermería, de modo que, mediante diferentes tipos de intervenciones, se proporcione al cuidador los recursos necesarios para realizar lo mejor posible su tarea de cuidado, sin que repercuta de forma negativa en su calidad de vida. El objetivo de esta revisión sistemática será dar a conocer la eficacia de las diferentes intervenciones de enfermería para prevenir la sobrecarga del cuidador principal de pacientes con enfermedad de Alzheimer. Metodología Para realizar esta revisión sistemática se han consultado distintas bases de datos bilbiográficas con el fin de identificar los estudios más relevantes y tratar de conocer la evidencia científica existente actualmente acerca de la eficacia y el empleo de los diferentes tipos de intervenciones de enfermería para prevenir la sobrecarga de los cuidadores de personas con Alzheimer. La búsqueda se realiza en una base de datos especializada en revisiones sistemáticas (Biblioteca Cochrane Plus) y en bases de datos de artículos originales (Medline, Scopus, Cinahl y Web of Science), mediante la búsqueda con las palabras clave: “caregivers”
- Published
- 2019
10. Paleoflood hydrology and related environmental changes of a mediterranean rambla (Castellón, NE Spain)
- Author
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Machado, María José, Medialdea, Alicia, Rico, María Teresa, Sánchez Moya, Yolanda, Sopeña, Alfonso, and Benito, Gerardo
- Abstract
Trabajo presentado en el 5th PAGES Open Science Meeting, celebrado en Zaragoza (España), del 9 al 13 de mayo de 2017, Rambla de la Viuda (drainage area of 1500 km2 ) is a Mediterranean ephemeral river with a hydrological regime characterised by large floods. The region has a long history of anthropogenic land-use changes, which contributed to temporal phases of increased rates of sediment yield and changes in flood hydrology. Valley sides revealed important accumulations of slackwater flood deposits. These slackwater flood deposits emplaced by high stage floodwaters show a complete stratigraphy from which we can reconstruct long-term records of floods and environmental changes. Interbeded with these flood units, colluvial units can be observed, and several edaphic horizons developed on colluvial and fluvial deposits were identified. The alluvial and colluvial chronostratigraphical, sedimentological and palaeobotanical (phytoliths) analysis of these units, together with the hydraulic flood modelling approach, made possible to determine: a) the way in which hydrological extreme events may be changing both in frequency and intensity as a result of climate variability, b) the weight of human influence (land-use) on soil hydrology, c) geomorphic channel changes, and c) human/climatic induced changes on landcover during this temporal scale (last 500 yrs).
- Published
- 2017
11. Historical palaeohydrology and landscape resilience of a Mediterranean rambla (Castellón, NE Spain): Floods and people
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Ministerio de Economía y Competitividad (España), Consejo Superior de Investigaciones Científicas (España), Fundación Biodiversidad, Machado, María José, Medialdea, Alicia, Calle, Mikel, Rico, María Teresa, Sánchez Moya, Yolanda, Sopeña, Alfonso, Benito, Gerardo, Ministerio de Economía y Competitividad (España), Consejo Superior de Investigaciones Científicas (España), Fundación Biodiversidad, Machado, María José, Medialdea, Alicia, Calle, Mikel, Rico, María Teresa, Sánchez Moya, Yolanda, Sopeña, Alfonso, and Benito, Gerardo
- Abstract
This paper provides a new methodological approach to analyse secular patterns of flooding (magnitude and frequency) from sedimentary evidence (palaeofloods), taking into account changes in channel geometry, and their links to historical environmental changes and the inherent social and demographic evolution within the catchment. A case study analysis was focused in Rambla de la Viuda (drainage area of 1500 km2) whose stream flow is related to extreme rainfalls. A 500 years sedimentary archive was reconstructed from eight stratigraphic profiles comprising continuous sequences of slackwater flood deposits interbedded with episodic colluvial and edaphic horizons. Discharge estimates associated to sedimentary flood evidences were obtained from one-dimensional hydraulic modelling. The stratigraphic units were sampled to characterise their geochemical and paleobotanical (phytoliths) contents. Palaeoflood chronology was obtained from radiocarbon and luminescence (OSL) dating, supported by documentary data (written historical documents). A high frequency and high magnitude palaeoflood period took place during the 15th-middle 16th century, which seem to correlate in time with general wetter conditions. Three short-term environment stability conditions (land use and climatic) also made possible the development of three paleosols. The lowest flood magnitude and discharges in the sedimentary record was found between the mid-17th to mid-18th centuries, under prevailing drier environmental conditions. Episodic high magnitude flooding took place at late 18th century, correlating in time with palaeovegetation and geochemical evidences of important changes on land use (deforestation and grazing). Poorer developed soils were found at upper stratigraphic sequences (19th century) characterised by thick units of colluvium deposits, usually culminating sequences of short-lived continuous slackwater flood units. Despite of the potential human influence (land-use) on soil hydrology, the lo
- Published
- 2017
12. Historical Palaeohydrology and landscape resilience of a mediterranean Rambla (Castellón, NE Spain)
- Author
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Machado, María José, Medialdea Cela, Teresa, Rico, María Teresa, Sánchez Moya, Yolanda, Sopeña, Alfonso, and Benito, Gerardo
- Subjects
Palaeoflood hydrology ,Land-use changes ,Ephemeral streams ,Paleosols ,Vegetation changes - Abstract
Trabajo presentado en el Congreso Ex AQUA, celebrado en Padua (Italia), del 26 de septiembre al 1 de octubre de 2016, Rambla de la Viuda (drainage area of 1500 km2) is a Mediterranean ephemeral river with a hydrological regime characterised by large floods. The region has a long history of anthropogenic land-use changes, which contributed to temporal phases of increased rates of sediment yield and changes in flood hydrology. Valley sides revealed important accumulations of slackwater flood deposits. These slackwater flood deposits emplaced by high stage floodwaters show a complete stratigraphy from which we can reconstruct long-term records of floods and environmental changes. Interbeded with these flood units, colluvial units can be observed, and several edaphic horizons developed on colluvial and fluvial deposits were identified. The alluvial and colluvial chronostratigraphical, sedimentological and palaeobotanical (phytoliths) analysis of these units, together with the hydraulic flood modelling approach, made possible to determine: a) the way in which hydrological extreme events may be changing both in frequency and intensity as a result of climate variability, b) the weight of human influence (land-use) on soil hydrology, c) geomorphic channel changes, and c) the grade of resilience of landcover during this temporal scale (last 500 yrs).
- Published
- 2016
13. Hydrologial and environmental history of a mediterranean river recorded in palaeoflood sediments
- Author
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Machado, María José, Medialdea, Alicia, Rico, María Teresa, Sánchez Moya, Yolanda, Sopeña, Alfonso, and Benito, Gerardo
- Abstract
Trabajo presentado en el 5th International Paleoflood Meeting, celebrado en Rapid City (South Dakota, USA), del 12 al 15 de septiembre de 2016, Rambla de la Viuda (drainage area of 1500 km2) is a Mediterranean ephemeral river with a hydrological regime characterised by large floods. The region has a long history of anthropogenic land-use changes, which contributed to temporal phases of increased rates of sediment yield and changes in flood hydrology. Valley sides revealed important accumulations of slackwater flood deposits. These slackwater flood deposits emplaced by high stage floodwaters show a complete stratigraphy from which we can reconstruct long-term records of floods and environmental changes. Interbeded with these flood units, colluvial units can be observed, and several edaphic horizons developed on colluvial and fluvial deposits were identified. The alluvial and colluvial chronostratigraphical, sedimentological and palaeobotanical (phytoliths) analysis of these units, together with the hydraulic flood modelling approach, made possible to determine: a) the way in which hydrological extreme events may be changing both in frequency and intensity as a result of climate variability, b) the weight of human influence (land-use) on soil hydrology, c) geomorphic channel changes, and c) the grade of resilience of landcover during this temporal scale (last 500 yrs).
- Published
- 2016
14. El semipolje de La Estiva (Valle de Pineta, Pirineo oscense): origen, morfoestructura y procesos recientes en una depresión kárstica compleja
- Author
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Salazar Rincón, Ángel Enrique, Mata Campo, Maria Pilar, Valero-Garcés, Blas, Rico, María Teresa, Moreno, A., Rubio Sánchez-Aguililla, Félix Manuel, Ibarra Torre, Pedro, and Organismo Autónomo Parques Nacionales (España)
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Provincia Huesca ,Holoceno ,karst ,glaciar ,deslizamienrto - Abstract
Reunión Nacional de Geomorfología (14º. 2016. Málaga). - Colección: Geología y Geofísica, nº 5, La Estiva es una depresión kárstica localizada en las proximidades del Parque Nacional de Ordesa y Monte Perdido (PNOMP). En el contexto de estudio de otros registros, y con el fin de completar la secuencia paleoambiental del PNOMP, se ha llevado a cabo un estudio de dicha depresión y sus sedimentos. La Estiva está situada a una cota de 2066 m de altitud, en la margen septentrional del valle de origen glaciar de Pineta (Pirineo oscense). La depresión es un semipolje o polje marginal, pero de origen complejo, puesto que también han intervenido en su génesis procesos de deslizamiento., Departamento de Investigación en Recursos Geológicos, Instituto Geológico y Minero de España, España, Departamento de Procesos Geoambientales y Cambio Global, Instituto Pirenaico de Ecología, Consejo Superior de Investigaciones Científicas, España
- Published
- 2016
15. Registro de paleoinundaciones en el desfiladero de los Gaitanes y su implicación en la evaluación de la seguridad de las presas del alto Guadalhorce (Málaga)
- Author
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Benito, Gerardo, Rico, María Teresa, Sánchez Moya, Yolanda, Sopeña, Alfonso, Thorndycraft, V. R., Díez Herrero, Andrés, and Perucha Atienza, M. Ángeles
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Seguridad de presas ,Guadalhorce ,Peligrosidad de inundadaciones ,Palaeofloods ,Paleinundaciones ,Riesgos naturales ,Dam safety ,flood hazards ,Natural risks - Abstract
Comunicación oral presentada en la XIV Reunión Nacional de Geomorfología, celebrada en Málaga en junio de 2016., Proyecto PALEOMED (CGL2014-58127-C3-1-R) financiado por la CICYT, y el PIE Intramural (ref. 201430E003) financiado por el CSIC.
- Published
- 2016
16. Data mining, optimization and simulation tools for the design of Intelligent Transportation Systems
- Author
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Sánchez Rico, María Teresa
- Subjects
Aplicación informática ,Tesis - Abstract
Over the past years, the problems caused by traffic congestion in urban areas are increasingly severe and visible. Accidents, traffic jams and environmental damage are only some of the negative externalities caused by traffic congestion that today concern society. The so-called Intelligent Transportation Systems (ITS) are multidisciplinary tools which involve the application of advanced technologies and analytical approaches with the purpose of solving some of the referred transport problems. In the last decades different initiatives and projects have emerged in this field. Nevertheless, there is currently no proposal about a generic framework of ITS to be adapted in different traffic contexts. In this thesis, different mathematical and optimization models as well as simulation and data mining approaches are provided with the aim of contributing to the ITS field. The initial motivation for the development of this thesis comes from considering that nowadays any ITS must be capable of fulfilling four main premises: scalability, technological independence, robustness and facing the use of big data. The main contributions of this thesis are: - Literature review. A literature review on the current advances in the field of ITS and its classification is done. Furthermore, a proposal for and ITS prototype for traffic control and management is carried out. - An approach to face the continuous dynamic network loading problem. A continuous DNL model based on flow discretization¿s, instead of time discretization is presented with the main goal of achieving a trade-off between precision and computational cost. - A proposal for the enhancement of traffic signal optimization. A bilevel optimization model based on Time-Of-Day (TOD) intervals for traffic signal timing is proposed to address simultaneously the segmentation problems and the traffic control problems over these time intervals. The model has been solved by the use of efficient metaheuristic algorithms. ¿ An approach for daily traffic patterns identification. A prototype of urban traffic control system based on a prediction-after classification approach is presented. In an off-line phase, a repository of traffic control strategies for a set of (dynamic) traffic patterns is constructed through dynamic cluster techniques. In an on-line phase, the current daily traffic pattern is predicted within the repository and its associated control strategy is implemented in the traffic network. - A proposal for the design of ITS. A proposal for an ITS for traffic control and management is presented by using TOD intervals. This approach replaces the short-term traffic predictions by a finite sequence of stationary states within a set of given traffic patterns.
- Published
- 2015
17. Late Pleistocene to Holocene palaeoenvironmental variability in the north-west Spanish mountains: Insights from a source-to-sink environmental magnetic study of Lake Sanabria
- Author
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Borruel, Violeta, Gómez-Paccard, Miriam, Larrasoaña, Juan C., Rico, María Teresa, Valero-Garcés, Blas L., Moreno Caballud, Ana, Jambrina-Enríquez, Margarita, and Soto, Ruth
- Subjects
environmental magnetism ,deglaciation ,lacustrine sediments ,Iberian Peninsula - Abstract
We present a source-to-sink environmental magnetic study of a sediment core from Lake Sanabria (north-west Iberian Peninsula) and rocks of its catchment. The results indicate the occurrence of magnetite, and probably also pyrrhotite, in sediments accumulated between ca. 26 and 13 cal ka BP in a proglacial lake environment. These minerals also appear to dominate the magnetic assemblage of Palaeozoic rocks from the lake catchment. This indicates that sedimentation was then driven by the erosion of glacial flour, which suffered minimal chemical transformation due to a rapid and short routing to the lake. A sharp change in magnetic properties observed in the lake sediments between 13 and 12.6 cal ka BP reflects the rapid retreat of glaciers from the lake catchment. Sediments from the upper half of the studied sequence, accumulated after 12.6 cal ka BP in a lacustrine environment with strong fluvial influence, contain magnetite and smaller amounts of maghemite and greigite. We suggest that greigite grew authigenically under anoxic conditions caused by enhanced accumulation of organic matter into the lake. The occurrence of maghemite in these sediments suggests pedogenic activity in the then deglaciated lake catchment before the erosion and transportation of detrital material into the lake. © 2015 John Wiley & Sons, Ltd., The research was funded by the Spanish Ministry of Science and Competitiveness (CONSOLIDER − GRACCIE Project), the Fundación Patrimonio Natural de Castilla y León, and a Marie Curie Intra European Fellowship IEF-2012 (M.G.-P.). We are grateful to the Paleomagnetic Laboratory CCiTUB-ICTJA CSIC and the Magnetic Fabric Laboratory at the University of Zaragoza for their support and technical assistance with rock magnetic experiments, and to Qingsong Liu for his assistance with interpretation of thermomagnetic runs.
- Published
- 2015
18. El semipolje de La Estiva (Valle de Pineta, Pirineo oscense): origen, morfoestructura y procesos recientes en una depresión kárstica compleja
- Author
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Organismo Autónomo Parques Nacionales (España), Salazar Rincón, Ángel Enrique, Mata Campo, Maria Pilar, Valero-Garcés, Blas, Rico, María Teresa, Moreno, A., Rubio Sánchez-Aguililla, Félix Manuel, Ibarra Torre, Pedro, Organismo Autónomo Parques Nacionales (España), Salazar Rincón, Ángel Enrique, Mata Campo, Maria Pilar, Valero-Garcés, Blas, Rico, María Teresa, Moreno, A., Rubio Sánchez-Aguililla, Félix Manuel, and Ibarra Torre, Pedro
- Abstract
La Estiva es una depresión kárstica localizada en las proximidades del Parque Nacional de Ordesa y Monte Perdido (PNOMP). En el contexto de estudio de otros registros, y con el fin de completar la secuencia paleoambiental del PNOMP, se ha llevado a cabo un estudio de dicha depresión y sus sedimentos. La Estiva está situada a una cota de 2066 m de altitud, en la margen septentrional del valle de origen glaciar de Pineta (Pirineo oscense). La depresión es un semipolje o polje marginal, pero de origen complejo, puesto que también han intervenido en su génesis procesos de deslizamiento.
- Published
- 2016
19. Eficacia de los diferentes sistemas de descarga en el tratamiento de úlceras por pie diabético
- Author
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Saavedra Rico, María Teresa, Gil Manso, Pedro, and Universidade da Coruña. Facultade de Enfermaría e Podoloxía
- Abstract
Objetivos Los pacientes diabéticos, debido a la insuficiencia vascular y a la neuropatía, presentan un alto riesgo de padecer úlceras en los pies. Una vez que la úlcera está presente debe tratarse de la forma adecuada para evitar posibles complicaciones mayores, llegando incluso a la amputación. Aunque no existe un tratamiento de descarga estándar, sí existe evidencia científica del uso de distintos sistemas de descarga más eficaces que otros. La siguiente revisión sistemática pretende dar a conocer la eficacia de los diferentes sistemas de descarga en el tratamiento de úlceras por pie diabético. Metodología Para realizar esta revisión sistemática se han consultado distintas bases de datos bibliográficas con el fin de identificar los estudios más relevantes y tratar de conocer la evidencia científica existente actualmente acerca de la eficacia y uso de distintos sistemas de descarga como tratamiento para las úlceras de pie diabético. La búsqueda se realiza en una base de datos especializada en revisiones sistemáticas (Biblioteca Cochrane Plus) y en bases de datos de artículos originales (PubMed/Medline, Cinhal, etc.), mediante cuatro tipos de búsquedas con las palabras clave: “ulcers”, “footwear”, “felted foam”, “insoles” and “diabetic foot”. Resultados Tras la consulta en las distintas bases de datos se han pre-seleccionado un total de 160 artículos desde el año 2000 hasta la actualidad, de los cuales, 49 artículos han sido incluidos y 111 han sido excluidos, basándose en los criterios de inclusión y exclusión establecidos. Eficacia de los sistemas de descarga para úlceras por pie diabético 4 Conclusiones Los sistemas de descarga más efectivos son las descargas no extraíbles (TCC y ITCC), puesto que se asegura el cumplimiento del tratamiento por parte del paciente, pero en caso de que éstas no se puedan emplear (coste, complicaciones, etc.) existen otros sistemas efectivos (calzado, ortesis y fieltro en combinación con un calzado apropiado) para tratar las úlceras, aunque no presentan la misma velocidad de curación. Estos últimos deben considerarse como segunda opción de tratamiento o cuando los otros dispositivos estén contraindicados. Traballo fin de grao (UDC.FEP). Podoloxía. Curso 2013/2014
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- 2014
20. An Approach to Dynamical Classification of Daily Traffic Patterns
- Author
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García-Ródenas, Ricardo, primary, López-García, María L., additional, and Sánchez-Rico, María Teresa, additional
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- 2016
- Full Text
- View/download PDF
21. Dinámica glacial, clima y vegetación en el Parque Nacional de Ordesa y Monte Perdido durante el Holoceno
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Valero-Garcés, Blas L., Oliva-Urcia, Belén, Moreno Caballud, Ana, Rico, María Teresa, Mata Campo, Maria Pilar, Salazar Rincón, Ángel Enrique, Rieradevall, María, García-Ruiz, José María, Chueca Cía, Javier, González-Sampériz, Penélope, Pérez-Sanz, Ana, Salabarnada, Ariadna, Pardo, Alfonso, Sancho Marcén, Carlos, Barreiro-Lostres, Fernando, Bartolomé, Miguel, García-Prieto, E., Gil-Romera, Graciela, López Merino, Lourdes, Sevilla-Callejo, Miguel, and Tarrats, P.
- Abstract
[EN] New and more detailed geomorphological, hydrological, vegetational and climatic reconstructions for the Holocene in the PNOMP have been obtained from the pluridisciplinary study of three records (La Larri, La Estiva and Marboré). La Larri paleolake was originated when the Pineta glacier blocked the valley before 35 ka and existed till 11 ka when it was drained when the glacier receded. Marboré Lake record spans the last 11 kyrs. Facies, geochemistry and magnetic properties identify a large glacier influence between 11 and 9.2 ka. The 9.2- 4.1 ka was relatively more humid. The Mid Holocene transition ca 5 – 4.5 ka to more arid conditions was detected in both Marboré and La Estiva. During the last 3 millennia several arid phases occurred (end of the Roman Period, the High Middle Ages, the Medieval Climate Anomaly). The LIA is characterized by higher runoff and colder climate. However, pollen studies indicate a higher human pressure in the mountains during this period. Both, historic global atmospheric contamination and local influx of the mining activities in the Alto Cinca valley are detected in the Marboré record. The Marboré and Monte Perdido glaciers have been receding during the last centuries, with several moraines ascribed to the first phase of the LIA, and a large expansion during the early XXth century. The main factors controlling recent glacier retreat are the increase in maximum summer temperatures and the decrease in snow precipitation in winter., Proyecto financiado por el Organismo Autónomo Parques Nacionales Dinámica glacial, clima y vegetación en el Parque Nacional de Ordesa - Monte Perdido durante el Holoceno (ref: 83/2009). Agradecemos a todo el personal del PNOMP su apoyo para la realización de los trabajos de campo.
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- 2013
22. Controles climáticos y ambientales en los registros de paleoavenidas de la rambla de la Viuda (Castellón)
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Machado, María José, Benito, Gerardo, Rico, María Teresa, Sánchez Moya, Yolanda, and Sopeña, Alfonso
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education - Published
- 2012
23. Quaternary karstic lakes in the Western Ebro Basin and the Central Pyrenees: The Arreo, Estanya and Montcortés sequences and their depositional evolution and paleoclimate implications
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Valero-Garcés, Blas L., Corella, Juan Pablo, Morellón, Mario, Moreno Caballud, Ana, González-Sampériz, Penélope, Pérez-Sanz, Ana, Barreiro-Lostres, Fernando, Rico, María Teresa, and Plata-Montero, Alberto
- Abstract
The Spanish InterMinistry of Science and Technology (CICYT) provided financial support for this research, through the projects LIMNOCAL (CGL2006-13327-C04-01), GLOBALKARST (REN2003- 09130-C02-02) and GRACCIE (CSD2007-00067).
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- 2011
24. La secuencia sedimentaria del Lago de Sanabria (Zamora, Noroeste de España)
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Jambrina-Enríquez, Margarita, Rico, María Teresa, Moreno Caballud, Ana, and Valero-Garcés, Blas L.
- Subjects
Última deglaciación ,Sedimentación lacustre ,Last deglaciation ,Sanabria Lake ,Lacustrine sediments ,Lago Sanabría ,Península Ibérica ,Iberian Peninsula - Abstract
4 páginas, [EN] Lake Sanabria (42º07’30’’N, 06º43’00’’W; 1000 m a.s.l.) in Zamora province, northwest Spain is the largest glacial lake in the Iberian Peninsula. Five Kullenberg long cores and 10 short gravity cores were studied using magnetic susceptibility, sedimentological analyses and Total Carbon content. The chronological model is based in 13 14C AMS. The basal age of the longest core (ca. 26000 cal. yr. BP) indicates that the maximum extension of the Tera Valley glacier occurred prior to the global Last Glacial Maximum. During a long proglacial lake phase (unit 7, > 26 – 14,3 ka BP) light grey banded, coarse sands and silts with low organic matter content deposited. Glaciolacustrine sediments (unit 6, 14,3 – 13,1 ka BP), with organic matter-rich silts, represent the onset of the last deglaciation. An increase of clastic input (sandy silts) occurred between (13,1- 12,2 ka BP, unit 5) and likely corresponds to a cold pulse within the deglaciation period. Finally, units 4 to 1 (Holocene) are made of organic –rich silts with intervals of sandy layers., [ES] El Lago de Sanabria (42º07’30”N, 06º43’00”O; 1000 m s.n.m.) en la provincia de Zamora, es el mayor lago de origen glacial de la Península Ibérica. En este trabajo se describen los resultados del análisis sedimentológico, de susceptibilidad magnética y composicional (Carbono orgánico total) de cinco sondeos largos tipo Kullenberg y 10 sondeos cortos de gravedad. El modelo cronológico se basa en 13 dataciones de 14C AMS. La edad basal del sondeo más largo es de 26000 cal. años BP lo que indica que la extensión máxima del glaciar del valle del Tera ocurrió antes del Último Máximo Glacial a escala global. Durante una fase de lago proglacial (unidad 7, > 26 – 14,3 ka BP) se depositaron facies clásticas de arenas gruesas y limos grises. Facies de limos con mayor contenido orgánico depositados en un ambiente glaciolacustre (Unidad 6, 14,3 – 13,1 ka BP), representan el comienzo de la última deglaciación. Un aumento en el aporte clástico y la sedimentación de facies de limos arenosos (Unidad 5, 13,1 – 12,2 ka BP) se corresponde probablemente con una fase fría durante la deglaciación. Finalmente, la sedimentación durante el Holoceno (unidades 4 a 1) está dominada por limos orgánicos con intercalaciones finas de arenas., Este estudio se ha realizado con financiación de los proyectos CALIBRE (CGL2006- 13327-C04/CLI), GRACCIE – CONSOLIDER (CSD2007-00067) y de la Fundación Patrimonio Natural de Castilla y León. Margarita Jambrina tiene una beca de Formación de Personal de Investigación de la Universidad de Salamanca.
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- 2011
25. Evolución climática y ambiental del Parque Nacional de Picos de Europa desde el último máximo glaciar
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Valero-Garcés, Blas L., Moreno Caballud, Ana, González-Sampériz, Penélope, Morellón, Mario, Rico, María Teresa, Corella, Juan Pablo, Jiménez-Sánchez, Montserrat, Domínguez-Cuesta, María José, Farias, Pedro, Stoll, Heather, López Merino, Lourdes, López Sáez, José Antonio, Leira, Manel, Santos, Luisa, Mata Campo, Maria Pilar, Rieradevall, María, Rubio, Esther, Navas Izquierdo, Ana, Delgado Huertas, Antonio, Marco-Barba, Javier, and Sigrò, Javier
- Subjects
Diatoms ,Último ciclo glaciar ,Diatomeas ,Sedimentología lacustre ,Last glacial cycle ,Polen ,Last deglaciation ,Ostracods ,Ostrácodos ,Picos de Europa National Park ,Lake sediments ,Pequeña Edad del Hielo ,Chironomids ,Little Ice Age ,Pollen ,Paleoclima ,Parque Nacional de Picos de Europa ,Past climate change ,Deglaciación ,Quironómidos - Abstract
17 páginas, 11 figuras.-- Ramírez, L. & Asensio, B. (eds.)., [EN]: A multi-proxy study of the Enol Lake sequence (Cantabrian Mountains, Northern Spain) together with detailed geomorphological mapping provides a first record of glacier evolution and climate change over the last 40,000 years in the Picos de Europa National Park. The Enol glacial retreated from its maximum extent prior to 40 kyr BP thus supporting previous evidences that the maximum extent of southern Europe glaciers occurs earlier than in northern Europe mountains. A slight improvement in climate conditions is detected at 26 kyrs ago with the change from proglacial sediments to glaciolacustrine sedimentation and a final step at 18 kyrs ago with the onset of organic-rich sediments. Last deglaciation occurred in two phases ending with a cold and dry episode (13,500-11,600 cal yrs BP) embedding the Younger Dryas event. The Holocene is divided in three intervals: a humid and warmer period (11,600-8700 cal yrs BP); a tendency towards drier climate during the Middle Holocene (8700- 4650 cal yrs BP) and a final recovery of humidity when the landscape is already modified by human activity (pastoral activities, deforestation) (4650-2200 cal yrs BP). Additionally, the impact of the end of the Little Ice Age (LIA) and 20th century warming and the varying influence of anthropogenic activities is evidenced by the integration of sedimentary, geochemical, pollen and diatom data in a 210Pb chronological framework. Multidisciplinary studies focused on exceptional lacustrine records, such as the Lago Enol sequence presented here, allows discerning between the climatic and the anthropogenic influences on the evolution of both the lake system and the catchment area, including the vegetation cover. Thus, since the current state of the environment is the result of those influences, this type of studies is very useful for implementing new policies of conservation within the National Park., [ES]: El análisis de múltiples indicadores en la secuencia sedimentológica del Lago de Enol (Cordillera Cantábrica, Norte de España), junto con la elaboración de una cartografía geomorfológica de detalle, han proporcionado por primera vez, un registro de la evolución glaciar y del cambio climático durante los últimos 40,000 años en el Parque Nacional de Picos de Europa. El glaciar de Enol comenzó a retirarse de su máxima extensión hace más de 40.000 años, apoyando así evidencias anteriores de que la máxima extensión de los glaciares en el sur de Europa ocurrió antes que en las montañas del norte de Europa. Una ligera mejora de las condiciones climáticas se observa ya hace 26.000 años, cuando Enol deja de tener una sedimentación típica de lago proglaciar y pasa a un ambiente glaciolacustre, aunque no es hasta hace unos 18.000 años cuando empiezan a depositarse sedimentos orgánicos. La última deglaciación ocurrió en dos fases, finalizando con un periodo frío y seco (13.500-11.600 años cal. BP) que incluye el evento global conocido como Dryas Reciente. El Holoceno se ha dividido en tres intervalos, comenzando con un periodo húmedo y templado (11.600-8700 años cal. BP), seguido por una tendencia hacia mayor aridez durante el Holoceno Medio (8700-4650 años cal. BP), y una recuperación final de la humedad cuando el paisaje está ya modificado por la actividad humana debido esencialmente al pastoralismo y la deforestación (4650-2200 años cal BP). Además, el estudio integrado de la sedimentología, geoquímica, polen y asociaciones de diatomeas en dos sondeos cortos del Lago de Enol, ha evidenciado el impacto del final de la Pequeña Edad del Hielo (PEH) y del calentamiento global durante el siglo XX, junto a una influencia variable de las actividades antrópicas. Estudios multidisciplinares focalizados en registros lacustres excepcionales, como la secuencia del Lago de Enol (objeto de estudio en este proyecto), han permitido distinguir entre las influencias climáticas y antrópicas en la evolución pasada tanto del sistema lacustre como de sus alrededores, incluyendo la cobertura vegetal. Así, dado que el estado actual del ecosistema es, en gran parte, el resultado de esas influencias, este tipo de estudios ayudará a implementar nuevas políticas de conservación en el Parque Nacional., Este estudio ha sido financiado por el proyecto “Evolución climática y ambiental del Parque Nacional de Picos de Europa desde el último máximo glaciar - ref: 53/2006” del Organismo Autónomo de Parques Nacionales. Adicionalmente, se ha conseguido financiación a través de los proyectos LIMNOCLIBER (REN2003-09130-C02-02), IBERLIMNO (CGL2005-20236-E/CLI) y LIMNOCAL (CGL2006-13327-C04-01) y del proyecto Consolider GRACCIE (CSD2007-00067) del Ministerio de Ciencia y Tecnología.
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- 2010
26. The last deglaciation in the Picos de Europa National Park (Cantabrian Mountains, northern Spain)
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Moreno Caballud, Ana, Valero-Garcés, Blas L., Jiménez-Sánchez, Montserrat, Domínguez-Cuesta, María José, Mata Campo, Maria Pilar, Navas Izquierdo, Ana, González-Sampériz, Penélope, Stoll, Heather, Farias, Pedro, Morellón, Mario, Corella, Juan Pablo, and Rico, María Teresa
- Abstract
42 páginas, 8 figuras, 4 tablas.-- El PDF del artículo esta en formato pre-print., A sedimentological and geochemical study of the Lago Enol sequence (Cantabrian Mountains, northern Spain), together with detailed geomorphological mapping, provides a first record of glacier evolution and climate change over the last 40 ka in the Picos de Europa National Park. The Enol glacier retreated from its maximum extent prior to 40 ka BP as demonstrated by the onset of proglacial lacustrine sedimentation in two glaciated depressions: the Comella hollow to the north (before 40 ka BP) and the Lago Enol (before 38 ka BP). These results support previous evidence that the maximum extent of southern European glaciers occurred earlier than in northern Europe. Alternation of homogeneous and laminated proglacial sediments during the glacier retreat illustrate a dynamic glacial evolution during the Marine Isotope Stage (MIS) 3 (40–26 ka BP). A slight warming is detected at 26 ka ago with the change from proglacial sediments (in a lake located in contact to the glacier) to glaciolacustrine sedimentation (in a non-contact or distal lake). Finally, the onset of organic-rich sediments took place at 18 ka ago. This last transition occurred in two phases, similarly to the North Atlantic Last Termination, suggesting a link between North Atlantic Deep Water formation oscillations and palaeohydrological variability in the Cantabrian Mountains., This research has been funded through the projects LIMNOCLIBER (REN2003-09130-C02-02), IBERLIMNO (CGL2005-20236-E/CLI), LIMNOCAL (CGL2006-13327-C04-01) and GRACCIE (CSD2007-00067), provided by the Spanish Inter-Ministry Commission of Science and Technology (CICYT). Additional funding was provided by the Spanish National Parks Agency through the project ‘Evolución climática y ambiental del Parque Nacional de Picos de Europa desde el último máximo glaciar – ref: 53/2006’. A. Moreno acknowledges funding from the European Commission's Sixth Framework Program (Marie Curie Outgoing International Fellowships, proposal 021673-IBERABRUPT).
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- 2010
27. The influence of subaquatic springs in lacustrine sedimentation: Origin and paleoenvironmental significance of homogenites in karstic Lake Banyoles (NE Spain)
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Morellón, Mario, Anselmetti, Flavio, Valero-Garcés, Blas L., Giralt, Santiago, Ariztegui, Daniel, Sáez, Alberto, Mata Campo, Maria Pilar, Barreiro-Lostres, Fernando, Rico, María Teresa, Moreno Caballud, Ana, Morellón, Mario, Anselmetti, Flavio, Valero-Garcés, Blas L., Giralt, Santiago, Ariztegui, Daniel, Sáez, Alberto, Mata Campo, Maria Pilar, Barreiro-Lostres, Fernando, Rico, María Teresa, and Moreno Caballud, Ana
- Abstract
Banyoles (42°08'N, 2°45'E) is the largest and deepest lake of karstic-tectonic origin in the Iberian Peninsula. The lake comprises two basins and six sub-circularly shaped sub-basins fed by subaquatic springs. Periods of intense groundwater inflow in the deepest sub-basins lead to the fluidization and re-suspension of previously deposited sediments and subsequent settling forming homogenite deposits on the southern basin intermediate platforms. The multiproxy analysis of sediment cores combined with high resolution seismic stratigraphy (3.5kHz pinger and multi-frequency Chirp surveys) allows a precise reconstruction of depositional environments and related hydrological variability and groundwater inflow during the last ca. 7.6cal kyr BP. According to the age model based on 137Cs, 210Pb and AMS 14C dating, homogenite deposition occurred between 7.2 and 5.5cal kyr BP, stopped during the middle Holocene (5.5-2.8cal kyr BP) and greatly increased during the last two millennia with a total of 17 homogenite layers individually up to 75cm-thick. The onset of this unique sedimentation mode at ca. 3cal kyr BP coincides with an increase in lake level, evidenced by the onlapping of fine-grained, distal sediments over coarser massive, carbonate-rich, littoral deposits. A detailed, multidisciplinary study of the homogenites (sedimentology, physical properties, high-resolution elemental geochemistry, mineral composition, grain-size, organic matter content and SEM) combined with seismic stratigraphy demonstrates that the fluidization events triggering the formation of the homogenites were caused by higher and more intense local groundwater inflow, related to increased rainfall during the Late Holocene and likely intensified by land use changes during the last millennium. © 2013 Elsevier B.V.
- Published
- 2014
28. Timing of deglaciation and postglacial environmental dynamics in NW Iberia: the Sanabria Lake record
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Jambrina-Enríquez, Margarita, Rico, María Teresa, Moreno Caballud, Ana, Leira, Manel, Bernárdez, Patricia, Prego, R., Recio, Clemente, Valero-Garcés, Blas L., Jambrina-Enríquez, Margarita, Rico, María Teresa, Moreno Caballud, Ana, Leira, Manel, Bernárdez, Patricia, Prego, R., Recio, Clemente, and Valero-Garcés, Blas L.
- Abstract
The multiproxy study (sedimentology, geochemistry and diatoms) of sediment cores from Sanabria Lake (42°07′30″ N, 06°43′00″ W, 1000 m a.s.l.) together with a robust 14C chronology provides the first high-resolution and continuous sedimentary record in the region, extending back the last 26 ka. The development of a proglacial lake before 26 cal ka BP demonstrates the onset of deglaciation before the global Last Glacial Maximum, similarly to other alpine glaciers in southern European mountains. Rapid deglaciation occurred at the beginning of the Greenland Interstadial GI-1e (Bølling, 14.6 cal ka BP). Following a short-lived episode of glacier re-advance (14.4–14.2 cal ka BP, GI-1d), a climatic improvement at 13.9 cal ka BP suggests the glaciers retreated from the lake basin during the GI-1c. Another glacier reactivation phase occurred between ca 13.0–12.4 ka, starting earlier than the onset of GS-1 (Younger Dryas). Rapid deglaciation during the Early Holocene (11.7–10.1 cal ka BP) was followed by a period of higher river discharge (10.1–8.2 cal ka BP). After 8.2 ka, the Holocene is characterized by a general decreasing trend in humidity, punctuated by the driest phase during the Mid Holocene (ca 6.8–4.8), a wetter interval between 4.8 and 3.3 cal ka BP, and a relatively decline of rainfall since then till present, with a minor increase in humidity during some phases (ca 1670–1760) of the Little Ice Age. Discrete silt layers intercalated in the organic-rich Holocene deposits reflect large flooding events of the Tera River (ca 10.1, 8.4, 7.5, 6.2, 5.7–5.6, 4.6, 4.2, 3.7, 3.3, 3.1, 2.7, 2.5 and 2.0 cal ka BP). Their synchronicity with a number of cold and humid events described in the Atlantic demonstrates a strong control of NW Iberian climate by North Atlantic dynamics at centennial–millennial scale. Comparison with Western Mediterranean records points to similar regional dynamics during the Holocene, although modulated in the NW Iberian Peninsula by the stronger Atlan
- Published
- 2014
29. Eficacia de los diferentes sistemas de descarga en el tratamiento de úlceras por pie diabético
- Author
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Universidade da Coruña. Facultade de Enfermaría e Podoloxía, Saavedra Rico, María Teresa, Universidade da Coruña. Facultade de Enfermaría e Podoloxía, and Saavedra Rico, María Teresa
- Abstract
Objetivos Los pacientes diabéticos, debido a la insuficiencia vascular y a la neuropatía, presentan un alto riesgo de padecer úlceras en los pies. Una vez que la úlcera está presente debe tratarse de la forma adecuada para evitar posibles complicaciones mayores, llegando incluso a la amputación. Aunque no existe un tratamiento de descarga estándar, sí existe evidencia científica del uso de distintos sistemas de descarga más eficaces que otros. La siguiente revisión sistemática pretende dar a conocer la eficacia de los diferentes sistemas de descarga en el tratamiento de úlceras por pie diabético. Metodología Para realizar esta revisión sistemática se han consultado distintas bases de datos bibliográficas con el fin de identificar los estudios más relevantes y tratar de conocer la evidencia científica existente actualmente acerca de la eficacia y uso de distintos sistemas de descarga como tratamiento para las úlceras de pie diabético. La búsqueda se realiza en una base de datos especializada en revisiones sistemáticas (Biblioteca Cochrane Plus) y en bases de datos de artículos originales (PubMed/Medline, Cinhal, etc.), mediante cuatro tipos de búsquedas con las palabras clave: “ulcers”, “footwear”, “felted foam”, “insoles” and “diabetic foot”. Resultados Tras la consulta en las distintas bases de datos se han pre-seleccionado un total de 160 artículos desde el año 2000 hasta la actualidad, de los cuales, 49 artículos han sido incluidos y 111 han sido excluidos, basándose en los criterios de inclusión y exclusión establecidos. Eficacia de los sistemas de descarga para úlceras por pie diabético 4 Conclusiones Los sistemas de descarga más efectivos son las descargas no extraíbles (TCC y ITCC), puesto que se asegura el cumplimiento del tratamiento por parte del paciente, pero en caso de que éstas no se puedan emplear (coste, complicaciones, etc.) existen otros sistemas efectivos (calzado, ortesis y fieltro en combinación con un calzado apropiado) para tratar las úlceras
- Published
- 2014
30. Una vision paleolimnológica de tres lagos kársticos (Zoñar, Estanya y Taravilla): Evolución sedimentaria y paleohidrológica, clima e impacto humano e implicaciones para la gestión y conservación
- Author
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Valero-Garcés, Blas L., Morellón, Mario, Martín-Puertas, Celia, Moreno Caballud, Ana, Corella, Juan Pablo, González-Sampériz, Penélope, Rico, María Teresa, Mata Campo, Maria Pilar, and Navas Izquierdo, Ana
- Subjects
Hidrología ,Holocene ,lagos kársticos ,Limnogeology ,Península Ibérica ,Paleontología ,limnogeología ,karstic Iakes ,Geología estratigráfica ,Holoceno ,Cambio global ,Global change ,Iberian Peninsula - Abstract
18 Pag., 7 Fig., [ES] Se resumen los datos disponibles y previamente publicados de sondeos sedimentarios recuperados en tres lagos kársticos españoles: Taravilla en el Sistema Ibérico (provincia de Guadalajara), Estanya en el Prepirineo aragonés (provincia de Huesca) y Zoñar en el valle del Guadalquivir (provincia de Córdoba). El intervalo temporal que abarcan estas secuencias sedimentarias varía desde el último máximo glacial (desde hace 21000 años en Estanya) hasta el Holoceno tardío (desde hace 4000 en Zoñary 2000 años en Taravilla). Los resultados muestran la gran variabilidad de ambientes de depósito que se desarrollaron en estos sistemas lacustres, principalmente ligados a fluctuaciones en el nivel de los lagos, la química de las aguas y cambios en las cuencas de drenaje. Los cambios climáticos han sido los principales responsables de esta gran variabilidad sedimentológica e hidrológica. El impacto de las actividades humanas en las cuencas de recepción ha sido perceptible desde época ibero-romana, pero especialmente a partir de la Edad Media, con un claro aumento de las tasas de sedimentación en los lagos. Las secuencias lacustres representan archivos detallados de cambio global en el pasado que son imprescindibles para conocer tanto la variabilidad climática regional como la dinámica de estos sistemas y así implementar políticas de conservación y gestión de estos espacios naturales y de los recursos hidrológicos y ecológicos que sustentan y estrategias de adaptación al cambio climático., [EN] A paleolimnological perspective of three Spanish karstic lakes (Taravilla, Zoñar and Estanya): sedimentological and hydrological evolution, clima te and human impact and implications for management and restoration policies. We synthesize the available, published paleolimnological information based on sediment core analyses from three Spanish karstic lakes: Taravilla in the Iberian Range (Guadalajara province), Estanya in the Pre-Prepirinean Range (Huesca pro vince) and Zoñar in the Guadalquivir Basin (Córdoba province). The time span ranges from the last 21000 years in Estanya, about 4000 years in Zoñar and 2000 years in Taravilla. The multidisciplinary study shows large depositional chan ges in the lakes mostly related to water level and hydrochemical fluctuations and chan ges in the watershed. Climate change has been the main forcing to explain the hydrological chan ges in the lakes. Human impact in the watershed and the lakes has been documented since Iberian-Roman times and it has increased since the Medieval Ages with a much higher sediment delivery to the lakes. Lake sediment sequences contain detailed archives of global changes in the past, needed to understand the natural climate variability and the dynamics of the lacustrine systems. These data will help to implement conservation and restoration policies of aquatic ecosystems and also strategies for adaptation to future climate changes., Esta investigación se ha financiado con los proyectos LIMNOCAL (CGL2006-13327-C04-01) y GRACCIE (CSD2007-00067); concedidos por la Comisión Interministerial de Ciencia y Tecnología (CICYT); y a través del proyecto multidisciplinar PM073/2007, concedido por la Diputación General de Aragón (DGA).
- Published
- 2009
31. Riesgos naturales, crecidas fluviales y cambio climático
- Author
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Benito, Gerardo, Casas Planes, M. A., Machado, María José, Rico, María Teresa, Sánchez Moya, Yolanda, Sopeña, Alfonso, and Thorndycraft, V. R.
- Subjects
Calentamiento global ,Palaeofloods ,Climate change ,Cambio climático ,Global warming natural risk ,Riesgos naturales ,Crecidas fluviales ,Floods ,Paleocrecidas - Abstract
9 páginas, 10 figuras., [EN]: Flood response to Global Warming is one of the major uncertainties on the latest IPCC (Trenberth et al., 2007). The lack of long instrumental records makes difficult to provide robust links between extreme events and climate variability. In this paper, we describe the methodological procedures used on scientific research for reconstructing past floods in the context of variability. Evidences from past floods based on sedimentary and geomorphic records (palaeofloods) show a higher frequency of floods during the initial and final stages of cold periods (e.g. Little Ice Age 1550-1850 A.D.). During the instrumental period (1910 to the present), Iberian Atlantic rivers show a decrease on frequency for ordinary flood events, and in Mediterranean rivers data point out to an increase in the hydrological variability with higher frequency of flash floods., [ES]: Entre las principales incertidumbres del Informe del Panel Intergubernamental sobre Cambio Climático (IPCC) (Trenberth et al., 2007) se encuentra la predicción de crecidas extremas en respuesta al Calentamiento Global. La falta de registros instrumentales dificulta en gran medida la posibilidad de diagnosticar la magnitud y frecuencia con la que ocurrirán los eventos extremos en relación con la variabilidad climática. Las evidencias de crecidas pasadas basadas en indicadores geológicos (sedimentarios y geomorfológicos) permiten ampliar los registros de eventos extremos (paleocrecidas) a los últimos milenios, y comprender su respuesta en relación al clima. En este trabajo se pretende describir el procedimiento metodológico utilizado en la literatura científica para la reconstrucción de eventos extremos obtenidos del pasado reciente basado en el estudio de procesos geológicos externos. Los registros sedimentariosobtenidos en diferentes ríos peninsulares muestran que las paleocrecidas son más frecuentes durante los estadios iniciales y finales de periodos fríos (e.g. Pequeña Edad del Hielo 1550-1850 A.D.). En el periodo instrumental (1910 hasta la actualidad), los ríos Atlánticos de la Península Ibérica han experimentado una disminución de la frecuencia de las crecidas ordinarias, y, en las cuencas Mediterráneas los datos existentes apuntan al aumento en la irregularidad hidrológica y la generación de crecidas relámpago., Este trabajo constituye una contribución del Proyecto CGL2008-06474-C02-01/BTE “Riesgo de Inundaciones en ríos Mediterráneos en respuesta a la variabilidad climática y cambios ambientales” financiado por el Ministerio de Ciencia y Tecnología. La redacción del mismo se realizó durante una estancia de G. Benito en el U.S. Geological Survey (Portland, Oregon) dentro del Programa de Movilidad de Profesores (Programa Salvador de Madariaga) financiada por el Ministerio de Educación (Ref.: PR2008-0154)
- Published
- 2009
32. Evolución sedimentaria y geoquímica del Lago de Estanya (Huesca) durante los últimos 21.000 años
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Morellón, Mario, Valero-Garcés, Blas L., Rico, María Teresa, Mata Campo, Maria Pilar, Delgado Huertas, Antonio, and Romero, Óscar E.
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Geochemistry ,Holocene ,Lateglacial ,Sedimentary facies ,Lake Estanya - Abstract
4 páginas, 2 figuras, 1 tabla.-- Paleoclimatología.-- Trabajo presentado a la 46ª Sesión Científica de la Sociedad Geológica de España celebrada en Madrid en 2009., The sedimentary and geochemical evolution of Lake Estanya (NE Spain) documents arid conditions, reflected by shallow water levels, high salinity and low organic productivity during lateglacial times, with intensified aridity during the so-called Mystery Interval (17,500 – 14,500 cal. years BP), the Younger Dryas (13,300 – 11,600 cal. years BP) and prior to the Holocene (11,600 – 9,400 cal. years BP). Higher water availability characterized the last 9,400 years, as recorded by most Iberian marine and continental records. The Estanya records demonstrate a high impact of suborbital global climate fluctuations in lake hydrology. Increase in lake level and detrital sediment delivery during the last millenium also indicate changes in land uses in the watershed since Medieval times., Esta investigación se ha financiado con los proyectos LIMNOCAL (CGL2006- 13327-C04-01) y GRACCIE (CSD2007- 00067), concedidos por la Comisión Interministerial de Ciencia y Tecnología (CICYT), y a través del proyecto multidisciplinar PM073/2007, concedido por la Diputación General de Aragón (DGA).
- Published
- 2009
33. Reported tailings dam failures.A review of the European incidents in the worldwide context
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Rico, María Teresa, Benito, Gerardo, Salgueiro, A. R., Díez Herrero, Andrés, and Pereira, H.
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Environmental hazards ,Europe ,Mine tailings ,Mono and multivariate statistical analysis ,Tailings dam failures - Abstract
7 páginas, 5 figuras.-- El PDF del artículo es su versión post-print., A detailed search and re-evaluation of the known historical cases of tailings dam failure was carried out. A corpus of 147 cases of worldwide tailings dam disasters, from which 26 located in Europe, was compiled in a database. This contains six sections, including dam location, its physical and constructive characteristics, actual and putative failure cause, sludge hydrodynamics, socio-economical consequences and environmental impacts. Europe ranks in second place in reported accidents (18%), more than one third of them in dams 10–20 m high. In Europe, the most common cause of failure is related to unusual rain, whereas there is a lack of occurrences associated with seismic liquefaction, which is the second cause of tailings dam breakage elsewhere in the world. Moreover, over 90% of incidents occurred in active mines, and only 10% refer to abandoned ponds. The results reached by this preliminary analysis show an urgent need for EU regulations regarding technical standards of tailings disposal, This research has been funded by the European Commission through the project “A regional enterprise network decision-support system for environmental risk and disaster management of large-scale industrial spills”, e-EcoRisk Project (contract no. EVG1-2002-0068) and by the Spanish Ministry of Science and Education (HP2006-0072).
- Published
- 2008
34. El registro sedimentario del lago de Sanabria desde la última deglaciación
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Rico, María Teresa, Valero-Garcés, Blas L., Vega, J. C., Moreno Caballud, Ana, González-Sampériz, Penélope, Morellón, Mario, and Mata Campo, Maria Pilar
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Última deglaciación ,Holocene ,Last deglaciation ,Holoceno ,Península Ibérica ,Registros lacustres ,Lacustrine records ,Iberian Peninsula - Abstract
2 páginas, 2 figuras.-- Trabajo presentado a la XII Reunión Nacional de Cuaternario, Avila (2007)., The sedimentary evolution of Sanabria Lake (Zamora province, NW Spain) is reconstructed based on 4 kullenberg cores and 3 short cores. The longest core (9 m long) in the deepest (51 m) eastern subbasin reached the laminated and banded clastic proglacial lacustrine sediments deposited when the watershed was still glaciated. Basal 14C AMS dating (ca. 26 ka BP) indicates that the terminal morraine complex deposited prior to the global LGM. A high resolution study including magnetic susceptibility and XRF core-scanner geochemistry show millennial and century scale cycles in Lateglacial and Holocene organic-rich sediments. Calibration studies including 20 year long series of limnological data, short sediment cores, meteorological and land-use changes data are in progress., Este estudio está financiado por los proyectos de la CICYT LIMNOCLIBER (REN2003-09130- C02-02/CLI) y CALIBRE (CGL2006-13327-C04/CLI) y por la Acción Complementaria IBERLIMNO (CGL2004-20236- E).
- Published
- 2007
35. El registro de alta resolución de la variabilidad climática y ambiental del Lago de Enol (Picos de Europa) desde la última deglaciación
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Moreno Caballud, Ana, Valero-Garcés, Blas L., González-Sampériz, Penélope, Morellón, Mario, Rico, María Teresa, Mata Campo, Maria Pilar, Jiménez-Sánchez, Montserrat, and Stoll, Heather
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Última deglaciación ,Picos de Europa ,Espeleotemas ,Last deglaciation ,Registros lacustres ,Lacustrine records ,Speleothems - Abstract
2 páginas, 2 figuras.-- Trabajo presentado a la XII Reunión Nacional de Cuaternario, Avila (2007)., The identification and description of abrupt climate changes since last deglaciation in the northern Iberian Peninsula and the understanding of the potential forcing mechanisms requires the study of long, well-dated sequences that allow high-resolution reconstruction of past climate changes. We present here the first results from Lago de Enol sedimentary sequence in the Picos de Europa range covering the last 35,000 years. Sedimentological evidences, together with physical properties and XRF core scanner data, point to glacier re-advances during the LGM and the YD periods. Additionally, we confirm the early deglaciation timing for this region compared to other areas in northern Europe., Este estudio está financiado por los proyectos de la CICYT LIMNOCLIBER (REN2003-09130- C02-02/CLI) y CALIBRE (CGL2006-13327-C04/CLI), por la Acción Complementaria IBERLIMNO (CGL2004-20236-E) y por el proyecto “Evolución climática y ambiental del Parque Nacional de Picos de Europa desde el último máximo glaciar” (ref: 53/2006, Red de Parques Nacionales). A. Moreno agradece la financiación de la Comunidad Europea a través de una beca OIF Marie Curie (MOIF-CT-2006- 021673).
- Published
- 2007
36. Desarrollo simultáneo de pliegues, esquistosidad y cabalgamientos en el Eoceno inferior de Isaba (Valle del Roncal, Pirineo navarro)
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Gil-Imaz, A., Corella, Juan Pablo, Sánchez, Enrique, Rico, María Teresa, and Tyrrell, J.
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Foliation ,Pyrenees ,Fold ,Thrust ,Distributed deformation - Abstract
4 páginas, 4 figuras.-- El trabajo recoge resultados obtenidos en el contexto de las prácticas de campo de Geología Estructural con estudiantes de la Licenciatura de Geología de la Universidad de Zaragoza.-- Trabajo presentado a la 40ª Sesión Científica, León, 2006.-- et al., Geometric and kinematic analysis of Pyrenean folds, cleavage and thrusts is carried out in several exceptional outcrops of the Eocene flysch at Isaba (Navarra, Spain). Distribution, orientation and cross-cut relationships between these structures suggest that they are roughly coeval and co-genetic, the total deformation being distributed into different ductile and brittle mechanisms. The footwall of the Sierra de Arrigorrieta thrust shows a set of harmonic folds with axial-plane cleavage; an overall flattening (raiz cuadrada de 1 / raiz cuadrada de 1) = 0,7-0,85 has been estimated from their profile-section geometry. The hanging-wall shows more heterogeneous deformation: minor thrusts, complex duplexes, and non-harmonic folds with sharp changes in orientation and density of cleavage linked to thrust ramps. The structural position and the presence of some cuspatelobate folds (mullions) in turbidite levels suggest an early deformation even previous to the Larra thrust system.
- Published
- 2006
37. Desarrollo simultáneo de pliegues, esquistosidad y cabalgamientos en el Eoceno inferior de Isaba (Valle del Roncal, Pirineo occidental)
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Gil Imaz, Andrés, Simón, José Luis, Pueyo Anchuela, Óscar, Millán, H., Pocoví, Juan Andrés, Andrés, J. A., Arantegui, A., Arlegui, L. E., Arranz, E., Artieda, Octavio, Corella, Juan Pablo, Edo, V., Galindo, G., Maestro González, Adolfo, Sánchez, Esperanza, Rico, María Teresa, and Tyrrell, J.
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Foliation ,genetic structures ,musculoskeletal, neural, and ocular physiology ,Pyrenees ,Fold ,Thrust ,human activities ,Distributed deformation - Abstract
Geometric and kinematic analysis of Pyrenean folds, cleavage and thrusts is carried out in several exceptional outcrops of the Eocene flysch at Isaba (Navarra, Spain). Distribution, orientation and cross-cut relationships between these structures suggest that they are roughly coeval and co-genetic, the total deformation being distributed into different ductile and brittle mechanisms. The footwall of the Sierra de Arrigorrieta thrust shows a set of harmonic folds with axial-plane cleavage; an overall flattening l l = 0,7-0,85 has been estimated from their profile-section geometry. The hanging-wall shows more heterogeneous deformation: minor thrusts, complex duplexes, and non-harmonic folds with sharp changes in orientation and density of cleavage linked to thrust ramps. The structural position and the presence of some cuspatelobate folds (mullions) in turbidite levels suggest an early deformation even previous to the Larra thrust system., El trabajo recoge resultados obtenidos en el contexto de las prácticas de campo de Geología Estructural con estudiantes de la Licenciatura de Geología de la Universidad de Zaragoza. Agradecemos la colaboración de S. Calandra, E. Lanuza, S. Delacroix, F. Gil, Y. Iguaz, R. Jaso, F. Landa, O. Ibáñez, C. Puyo y J. Tremosa
- Published
- 2006
38. An Approach to Dynamical Classification of Daily Traffic Patterns.
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García‐Ródenas, Ricardo, López‐García, María L., and Sánchez‐Rico, María Teresa
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TRAFFIC patterns ,TRAFFIC engineering ,TRAFFIC flow ,DATA mining ,K-means clustering ,MANAGEMENT - Abstract
This article proposes a prototype of an urban traffic control system based on a prediction-after-classification approach. In an off-line phase, a repository of traffic control strategies for a set of (dynamic) traffic patterns is constructed. The core of this stage is the k-means algorithm for daily traffic pattern identification. The clustering method uses the input attributes flow, speed, and occupancy and it transforms the dynamic traffic data at network level in a pseudo-covariance matrix, which collects the dynamic correlations between the road links. A desirable number of traffic patterns is provided by Bayesian Information Criterion and the ratio of change in dispersion measurements. In an on-line phase, the current daily traffic pattern is predicted within the repository and its associated control strategy is implemented in the traffic network. The dynamic prediction scheme is constructed on the basis of an existing static prediction method by accumulating the trials on set of patterns in the repository. This proposal has been assessed in synthetic and real networks testing its effectiveness as a data mining tool for the analysis of traffic patterns. The approach promises to effectively detect the current daily traffic pattern and is open to being used in intelligent traffic management systems. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
39. Hidrología de paleocrecidas y seguridad de presas
- Author
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Benito, Gerardo, Rico, María Teresa, Díez Herrero, Andrés, Sánchez Moya, Yolanda, Sopeña, Alfonso, and Thorndycraft, V. R.
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Seguridad de presas ,Guadalentín river ,Río Guadalentín ,Palaeofloods ,Design flood ,Dam safety ,Avenida de diseño ,Flood frequency analysis ,Análisis de frecuencia ,Paleocrecidas - Abstract
10 páginas, 2 figuras, 1 tabla.-- Trabajo presentado al VIII Reunión Nacional de Geomorfología, Toledo, 22-25 de septiembre de 2004)., [EN]: Spanish regulations on dam safety recommend the estimation of a return period of 1000 years for the Design Flood and of 10,000 for the Safety Check Flood. The criteria used for the calculations are based on Flood Frequency Analysis (FFA) from gauge record data or on the Probable Maximum Flood (PMF) which is the hypothetical maximum of rainfall turned into runoff. The short gauge records affords little support for the FFA and for the hypothetical PMF, which in addition to the absence of a associated probability, limits the utility of these indices for risk-based dam safety decisions. Palaeoflood techniques are a means of directly assessing the probability of extreme floods and testing the validity of the PMF-based models. In this paper, palaeoflood record was applied to a case study in the Guadalentín river, upstream of the Valdeinfierno reservoir (372 km2) with a spillway capacity of 550 m3s-1 (design flood). In addition, available historical flood data was collected. Palaeoflood data and gauge record, were combined for the FFA, using existing methods for the fitting of distribution functions, such as the maximum likelihood. Palaeoflood analysis provides a discharge of 2350 m3s-1 for the design flood (1000-yr return period), and 3450 m3s-1 for the safety check flood (10,000 yr-return period). The discharge estimated by the PMF is 5786 m3s-1, showing an overestimation of this empirical method. Some recommendations for the calculation of the safety check flood and design flood are provided which can improve existing legislation on dam safety., [ES]: En el Reglamento Técnico sobre Seguridad de Presas y Embalses se recomienda, en función de la categoría de la presa considerada, el uso de las Avenidas de Proyecto con periodo de retorno de 1.000 años para la Avenida de Diseño, y de hasta 10.000 para la Avenida Extrema. Su estimación a partir de las exiguas series de datos foronómicos o meteorológicos del registro sistemático (ordinario) carece del rigor científico que requiere la envergadura de estos proyectos. En este trabajo se presentan los resultados del análisis de paleocrecidas en el río Guadalentín aguas arriba del embalse de Valdeinfierno (372 km2) con un aliviadero de 550 m3s-1, y su aplicación a la determinación de los cuantiles requeridos para la determinación de las avenidas de diseño y máxima. Los depósitos analizados corresponden a arenas y limos acumulados durante las crecidas en zonas de remanso (slackwater flood sediments). En el análisis de frecuencia de crecidas se han combinado los caudales estimados para estos depósitos con los datos de aforo utilizando el método de máxima verosimilitud para ajustar una distribución Gumbel. En este análisis se obtiene un caudal de 2350 m3s-1 para la avenida de diseño (1.000 años de periodo de retorno), y 3450 m3s-1 para la avenida máxima (10.000 años de periodo de retorno). Los caudales asociados a crecidas con periodos de retorno elevado se han comparado con los resultantes del cálculo de la avenida máxima probable (PMF), que es de 5786 m3s-1., Este trabajo se ha realizado con la financiación del Proyecto CICYT REN2001- 1633/RIES “Incorporación de datos de paleocrecidas e inundaciones históricas al cálculo de la avenida de diseño de presas” (PALEOCAP).
- Published
- 2004
40. El paleolago de la larri (valle de Pineta, Pirineos): Significado en el contexto del último máximo glaciar en el Pirineo
- Author
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Salazar Rincón, Ángel Enrique, Mata Campo, Maria Pilar, Rico, María Teresa, Valero-Garcés, Blas L., Oliva-Urcia, Belén, Ibarra, P., Rodríguez Fernández, Luis Roberto, Grupo HORDA, Salazar Rincón, Ángel Enrique, Mata Campo, Maria Pilar, Rico, María Teresa, Valero-Garcés, Blas L., Oliva-Urcia, Belén, Ibarra, P., Rodríguez Fernández, Luis Roberto, and Grupo HORDA
- Abstract
[EN] The unique geological framework of the >los Llanos de La Larri> (Ordesa-Monte Perdido National Park) facilitated the genesis of a relevant juxtaglacial sedimentary record during the last glacial phase in the central Pyrenees. In this study we conducted a geomorphological and outcrop survey, an electric tomography study and the definition of the main sedimentological units by means of the study of 3 cores up to 17 m long. The combined study of surface and underground data has allowed us to define a paleolacustrine sedimentary sequence more than 40 m thick and the geometry and nature of the units of the infilling sequence. Radiocarbon dating indicate that the minimum age of this deposit is 35 ky (BP) at 17 m depth, and the infilling of the basin ends at 11 ky BP. © Universidad de La Rioja., [ES] El singular contexto geológico de los llanos de La Larri (Parque Nacional de Ordesa-Monte Perdido, Pirineo Oscense) facilitó la formación de un importante complejo sedimentario de carácter yuxtaglaciar durante el último ciclo glaciar en el Pirineo central. En este estudio se ha realizado un análisis conjunto de cartografía geomorfológica, descripción de afloramientos, levantamiento e interpretación de perfiles de tomografía eléctrica y estudio de las principales unidades sedimentarias encontradas en 3 sondeos de hasta 17 m de profundidad. Los resultados han puesto de manifiesto la existencia de un importante paleolago con una potencia superior a 40 m, así como ha permitido definir la geometría del depósito y sus principales unidades. Las dataciones mediante radiocarbono de algunas muestras de superficie y subsuelo permiten afirmar que la sedimentación en el paleolago se inició antes de los 35 ka y finalizó, por la colmatación completa de su cuenca, hace unos 11 ka.
- Published
- 2013
41. El sistema de barreras tobáceas holocenas de Las Parras de Martín (Cordillera Ibérica, Teruel)
- Author
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Rico, María Teresa, Sancho Marcén, Carlos, Arenas-Abad, M. C., Vázquez-Urbez, M., Valero-Garcés, Blas L., Rico, María Teresa, Sancho Marcén, Carlos, Arenas-Abad, M. C., Vázquez-Urbez, M., and Valero-Garcés, Blas L.
- Abstract
[EN] A well-developed Holocene tufa system occurs in the headwaters of Las Parras River, Iberian Range (Teruel province). The longitudinal profile of the river shows two knickpoints downstream of two gorges known as Hocino de las Palomas and Hocino del Pajazo. The largest tufa build-ups in this area (49 m and 26 m thick) were found just downstream these two gorges and associated waterfalls. Barrage and cascade structures and facies suggest a rapid down-stream and vertical development of the tufa system. Between the knickpoints and upstream, the river valley displays a low-gradient (2%) and tufa deposits occur as laterally extensive terraces, with variable thickness (up to 8.2 m in El Batán) and fluvio-lacustrine tufa sequences associated to dammed areas. The Las Parras Tufa system represents a depositional environment including stepped fluvial systems with barrage-cascade and associated dammed areas separated by low gradient fluvial stretches. According to the chronological data, the development of Las Parras Holocene tufa occurred between 9.9 ky and 3.1 ky, with the highest growth rate from 5.5 to 3.1 ky, and a significant reduction of tufa activity during the last 2000 years. This evolution reflects the water availability in the area, and is coherent with changes in summer insolation during the Holocene. © Universidad de La Rioja., [ES] En el valle del río Las Parras (Cuenca alta del río Martín, Cordillera Ibérica turolense) aparecen importantes registros tobáceos holocenos. El perfil longitudinal del río muestra dos fuertes rupturas de pendiente coincidiendo con la salida de sendos estrechamientos conocidos como los hocinos de las Palomas y del Pajazo. En estos puntos se encuentran las acumulaciones tobáceas más potentes, 49 m en el Hocino de las Palomas y 26 m en el Hocino del Pajazo, con facies que indican un crecimiento rápido en un sistema de cascadas y barreras que se desarrollan vertical y lateralmente aguas abajo. El resto del tramo estudiado presenta pendientes suaves (2%) con depósitos tobáceos fluvio-lacustres, de morfología aterrazada de gran desarrollo longitudinal y menor potencia (hasta 8 m en El Batán), asociados con represamientos. El conjunto morfosedimentario corresponde a un sistema fluvial escalonado compuesto por cascadas y áreas represadas. Los datos cronológicos indican que las tobas holocenas del río Las Parras se formaron entre 9.9 y 3.1 ka, con un periodo de mayor desarrollo entre 5.5 y 3.1 ka. En los últimos 2000 años se produce un descenso brusco en la actividad tobácea en la zona que coincide con un periodo de mínima insolación estival y probablemente con una menor disponibilidad hídrica en la zona.
- Published
- 2013
42. A review of glacial geomorphology and chronology in northern Spain: Timing and regional variability during the last glacial cycle
- Author
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Jiménez-Sánchez, Montserrat, Rodríguez-Rodríguez, Laura, García-Ruiz, José María, Domínguez-Cuesta, María José, Farias, Pedro, Valero-Garcés, Blas L., Moreno Caballud, Ana, Rico, María Teresa, Valcárcel, M., Jiménez-Sánchez, Montserrat, Rodríguez-Rodríguez, Laura, García-Ruiz, José María, Domínguez-Cuesta, María José, Farias, Pedro, Valero-Garcés, Blas L., Moreno Caballud, Ana, Rico, María Teresa, and Valcárcel, M.
- Abstract
In this paper we synthesize the research in glacial geomorphology and geochronology in northern Spain, with special attention to the evidence of local glacier maximum extent earlier than the global LGM of MIS 2 (18-21. ka BP). More accurate models of glacier evolution have been defined based on limnogeological, geochronological and geomorphological data. In the Pyrenees, OSL (Optically Stimulated Luminescence), surface exposure and radiocarbon dating techniques have identified end moraines and fluvial terraces corresponding to MIS 6 (about 170. ka) and even to MIS 8 (about 260. ka), and also established the timing of the last local glacial maxima as prior to global LGM (MIS 4, ca. 50-70. ka). During the global LGM a smaller re-advance occurred but glaciers reached different extents in the Central and the Eastern Pyrenees. In NW Iberia, radiocarbon and OSL techniques point to local glacial maximum prior to ca 26. ka-38. ka and probably synchronous with 45. ka. Although some bias might have been introduced by the dating procedures, this review demonstrates that in both regions the local maximum extent occurred prior to the global LGM. The asynchronies between the glacial maxima chronologies in the different mountain ranges of northern Spain suggest that local climate factors exert a strong control on mountain glacier dynamics. © 2012 Elsevier B.V.
- Published
- 2013
43. Flood discharge estimation in a small mountain stream: methodological review and application in the Montardit basin (Spanish Central Pyrenees)
- Author
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Rico, María Teresa and Benito, Gerardo
- Subjects
Paleohidrología ,Modelos precipitación-escorrentía ,Geologic hazards ,Rainfall-runoff models ,Cauces de montaña ,Mountain streams ,Riesgos geológicos ,Pirineos ,Palaeofloods ,Spanish Pyrenees ,Palaeohydrology ,Paleocrecidas - Abstract
12 páginas, 6 figuras, 2 tablas., [EN]: This paper is focused on the combination of historical, palaeoflood and instrumental records applied to estimate magnitude and frequency of floods in a high-gradient, small catchment in the Spanish Central Pyrenees: the Montardit basin, 15,2 km2. Historical data corresponding to past floods occurring in the Montardit drainage basin during the 20th Century were compiled through interviews with inhabitants of villages located in the basin. The largest floods of the stream were recorded in November 1907, in August 1924 and in 1944. The results of the methods applied in this study suggest that for high-frequency, low-magnitude events there is a good correlation between peak discharges yielded by palaeoflood reconstruction (7 to 46 m3 s-1) and those estimated through rainfall-runoff modelling (8 to 46 m3 s-1). In contrast, high magnitude events show a higher historical frequency than that provided by rainfallrunoff methods., [ES]: En este estudio se analiza la magnitud y frecuencia de las crecidas en una pequeña cuenca (15,2 Km2) de los Pirineos Centrales españoles (cuenca de Montardit) mediante el uso combinado de diferentes métodos basados en evidencias geológicas, históricas y datos instrumentales. De acuerdo con los datos históricos las mayores crecidas registradas en la cuenca durante el siglo XX se produjeron en 1907, 1924 y 1944. Los caudales estimados m e d i a n t e técnicas de reconstrucción de paleocrecidas (7 a 46 m3 s- 1) y métodos hidrometeorológicos (8 a 46 m3 s- 1) son similares para eventos considerados de elevada frecuencia y baja magnitud. Por el contrario, las crecidas de elevada magnitud muestran una frecuencia histórica mayor que la predicha por los métodos basados en modelos hidrometeorológicos ., Este trabajo ha sido financiado por el Instituto Geológico y Minero de España (IGME) y la Comisión Europea (DGXII) a través del proyecto EVG1-CT-1999-00010 (Systematic, Palaeoflood and Historical data for the improvEment of flood Risk Estimation “SPHERE” Project).
- Published
- 2002
44. Diálogo de sordos sobre Chiapas
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Grange, Bertrand de la and Rico, María Teresa
- Subjects
CIENCIAS SOCIALES ,SOCIAL SCIENCES ,Ciencias sociales ,Política ,Political science ,Social sciences - Published
- 2001
45. Propiedades magnéticas de sedimentos del Lago de Sanabria y su área fuente (NO España): implicaciones paleoambientales
- Author
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Borruel, Violeta, Larrasoaña, Juan C., Gómez-Paccard, Miriam, Rico, María Teresa, Valero-Garcés, Blas L., Moreno, A., Soto, Ruth, Borruel, Violeta, Larrasoaña, Juan C., Gómez-Paccard, Miriam, Rico, María Teresa, Valero-Garcés, Blas L., Moreno, A., and Soto, Ruth
- Abstract
El estudio preliminar de las propiedades magnéticas de los sedimentos recientes (Pleistoceno superior-Holoceno) acumulados en el Lago de Sanabria (Zamora, NO de España) y de las principales litologías que afloran en su área fuente han permitido diferenciar dos unidades en los sedimentos lacustres. La unidad basal, acumulada en un medio proglaciar entre 25.6 y 12.2 kyr BP, se caracteriza por unas propiedades magnéticas muy similares a las de las litologías del área fuente. La presencia de magnetita y pirrotina en los sedimentos lacustres y en la mayoría de las litologías del área fuente sugiere una sedimentación causada principalmente por la erosión de una harina glaciar. El resto de la secuenci a lacustre, acumulada durante los últimos 12.2 kyr BP , presenta unas propiedades magnéticas claramente diferentes que sugieren la intervención tanto de procesos edáficos previos a la erosión del material d el área fuente como a cambios diagenéticos ocurridos con posterioridad a su acumulación en el lago. Este brusco cambio en las propiedades magnéticas de los sedimentos lacustres en torno a 12.2 kyr BP corrobora la rápida retirada de los aparatos glaciares de la cuenca hidrográfica del Lago de Sanabria inferida por otros autores en base a datos sedimentológicos, geoquímicos y geomorfológicos.
- Published
- 2012
46. Hydrological response of a dryland ephemeral river to southern African climatic variability during the last millennium
- Author
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Benito, Gerardo, Thorndycraft, V. R., Rico, María Teresa, Sánchez Moya, Yolanda, Sopeña, Alfonso, Botero, Blanca, Machado, María José, Davis, M., Pérez-González, Alfredo, Benito, Gerardo, Thorndycraft, V. R., Rico, María Teresa, Sánchez Moya, Yolanda, Sopeña, Alfonso, Botero, Blanca, Machado, María José, Davis, M., and Pérez-González, Alfredo
- Abstract
A long-term flood record from the Buffels River, the largest ephemeral river of NW South Africa (9250 km2), was reconstructed based on interpretation of palaeoflood, documentary and instrumental rainfall data. Palaeoflood data were obtained at three study reaches, with preserved sedimentary evidence indicating at least 25 large floods during the last 700 yr. Geochronological control for the palaeoflood record was provided by radiocarbon and optically stimulated luminescence (OSL) dating. Annual resolution was obtained since the 19th century using the overlapping documentary and instrumental records. Large floods coincided in the past within three main hydroclimatic settings: (1) periods of regular large flood occurrence (1 large flood/~30 yr) under wetter and cooler prevailing climatic conditions (AD 1600–1800), (2) decreasing occurrence of large floods (1 large flood/~100 yr) during warmer conditions (e.g., AD 1425–1600 and after 1925), and (3) periods of high frequency of large floods (~ 4–5 large floods in 20–30 yr) coinciding with wetter conditions of decadal duration, namely at AD 1390–1425, 1800–1825 and 1915–1925. These decadal-scale periods of the highest flood frequency seem to correspond in time with changes in atmospheric circulation patterns, as inferred when comparing their onset and distribution with temperature proxies in southern Africa.
- Published
- 2011
47. Quantitative climate reconstruction linking meteorological, limnological and XRF core scanner datasets: the Lake Sanabria case study, NW Spain
- Author
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Giralt, Santiago, Rico, María Teresa, Vega, J. C., Valero-Garcés, Blas L., Giralt, Santiago, Rico, María Teresa, Vega, J. C., and Valero-Garcés, Blas L.
- Abstract
Monthly limnological monitoring in Lake Sanabria (Spain) since 1986 provided a unique opportunity to test relationships among climate, hydrology and lake dynamics and how they are recorded in the lake sediments. Four datasets were employed: (1) meteorological (monthly maximum and minimum air temperature and total precipitation), (2) limnological (Secchi disk, water temperature, conductivity, pH, dissolved oxygen, nitrate, silicon, total and reactive phosphorus, and total chlorophylls and chlorophyll a), (3) hydrological (Tera River water input and output), and (4) XRF core scanner measurements carried out in short cores. Linear models between the different dataset variables allowed us to characterize the climate signal transmission from one to the other and cross-correlation analyses permitted us to identify the different response times (if any) between them. Principal Component Analyses (PCA) of the limnological and geochemical datasets allowed us to identify the main processes that link lake dynamics, primarily nutrient supply and organic productivity, with some sedimentological processes, e.g. organic matter and phosphorus accumulation. Sediment chronology was established by gamma spectrometry (210Pb). Water input to Lake Sanabria is controlled mostly by the Tera River input and is linked directly to precipitation. Response of the Lake Sanabria water budget to climate oscillations is immediate, as the strongest correlation between these two datasets occurs with no lag time. PCA of the limnological dataset indicated that most of the variance is related to nutrient input, and comparison with the Tera River water discharge shows that nutrient input was controlled mainly by oscillations in the hydrological balance. The lag time between the hydrological and limnological datasets is 1 month. The PCA of the XRF core scanner dataset showed that the principal process that controls the chemical composition of the Lake Sanabria sediments is related to sediment and nutrient
- Published
- 2011
48. Nivel de conocimiento sobre actividad física en mujeres de 20 a 39 años con obesidad, que asisten a una unidad de medicina familiar
- Author
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Luna Rojas, Jose Angel, Baeza Capetillo, María Nieves, Chávez Cruz, Silvia Mariola, Morales Rico, María Teresa, Olguín Cabrera, María Ester, Valentin Galicia, Cesar, Luna Rojas, Jose Angel, Baeza Capetillo, María Nieves, Chávez Cruz, Silvia Mariola, Morales Rico, María Teresa, Olguín Cabrera, María Ester, and Valentin Galicia, Cesar
- Abstract
Introduction. Obesity has grown in recent years becoming a public health problem, along with other chronic diseases. The quantity and quality of physical activity has been greatly reduced in today's society. Obesity is a chronic disease characterized by excessive storage of fat in the body, which is accompanied by metabolic abnormalities that predispose to the presentation of disorders that impair health. In this study, we describe the level of knowledge about physical activity with obese women according to their academic level. Material and methods. A study of quantitative, descriptive and cross the sample consisted of 270 obese women aged 20 to 39-year old. The collection was carried through the instrument (CENITESIES) modified Likert type scale. Measured sociodemographic variables and knowledge about physical activity. Results. The level of knowledge of the sample on physical activity was located in 58.9% of total knowledge, 37.4% in sufficient knowledge, 3.3% in a little knowledge and 0.4% have no knowledge. Conclusions. Based on the working assumption made obese women have a total lack of knowledge about physical activity by 70%. According to the academic level there is no significant difference by grade., Introducción. La obesidad ha crecido en los últimos años convirtiéndose en un problema de salud pública, junto con otras enfermedades crónicas. La cantidad y calidad de actividad física se ha reducido considerablemente en la sociedad actual. La obesidad es una enfermedad crónica caracterizada por el almacenamiento excesivo de tejido adiposo en el organismo, que se encuentra acompañada de alteraciones metabólicas, que predisponen a la presentación de trastornos que deterioran el estado de salud. En este estudio, se describe el nivel de conocimiento sobre la actividad física que tienen las mujeres obesas de acuerdo a su nivel académico. Material y métodos. Se realizó un estudio de tipo cuantitativo, descriptivo y transversal; la muestra la conformaron 270 mujeres con obesidad de 20 a 39 años de dad. La recolección se llevó a través del instrumento (CENITESIES) con escala tipo Likert modificado. Midió las variables sociodemográficas y el conocimiento sobre la actividad física. Resultados. El nivel de conocimiento de la muestra sobre actividad física se ubicó en un 58.9% de conocimiento total, el 37.4% en conocimiento suficiente, el 3.3% en poco conocimiento y el 0.4% no tiene conocimiento. Conclusiones. Con base a la hipótesis de trabajo formulada, las mujeres obesas presentan un déficit de conocimiento total sobre actividad física. De acuerdo al nivel académico no existe diferencia significativa por grado de escolaridad.
- Published
- 2010
49. Rainfall-runoff modelling and palaeoflood hydrology applied to reconstruct centennial scale records of flooding and aquifer recharge in ungauged ephemeral rivers
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Benito, Gerardo, Botero, Blanca, Thorndycraft, V. R., Rico, María Teresa, Sánchez Moya, Yolanda, Sopeña, Alfonso, Machado, María José, Dahan, Ofer, Benito, Gerardo, Botero, Blanca, Thorndycraft, V. R., Rico, María Teresa, Sánchez Moya, Yolanda, Sopeña, Alfonso, Machado, María José, and Dahan, Ofer
- Abstract
In this study we propose a multi-source data approach for quantifying long-term flooding and aquifer recharge in ungauged ephemeral rivers. The methodology is applied to the Buffels River, at 9000 km2 the largest ephemeral river in Namaqualand (NW South Africa), a region with scarce stream flow records limiting research investigating hydrological response to global change. Daily discharge and annual flood series (1965–2006) were estimated from a distributed rainfall-runoff hydrological model (TETIS) using rainfall gauge records located within the catchment. The model was calibrated and validated with data collected during a two year monitoring programme (2005–2006) at two stream flow stations, one each in the upper and lower reaches of the catchment. In addition to the modelled flow records, non-systematic flood data were reconstructed using both sedimentary and documentary evidence. The palaeoflood record identified at least 25 large floods during the last 700 yr; with the largest events reaching a minimum discharge of 255 m3 s−1 (450 yr return period) in the upper basin, and 510 m3 s−1 (100 yr return period) in the lower catchment. Since 1925 AD, the flood hydrology of the Buffels River has been characterised by a decrease in the magnitude and frequency of extreme events, with palaeoflood discharges five times greater than the largest modelled floods during the period 1965–2006. Large floods generated the highest hydrograph volumes, however their contribution to aquifer recharge is limited as this depends on other factors such as flood duration and storage capacity of the unsaturated zone prior to the flood. Floods reaching flows associated with 5–10 yr return periods (120–140 m3 s−1) and flowing for 12 days are able to fully saturate the Spektakel aquifer in the lower Buffels River basin.
- Published
- 2010
50. The impact of late Holocene climatic variability and land use change on the flood hydrology of the Guadalentín River, southeast Spain
- Author
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Benito, Gerardo, Rico, María Teresa, Sánchez Moya, Yolanda, Sopeña, Alfonso, Thorndycraft, V. R., Barriendos, M., Benito, Gerardo, Rico, María Teresa, Sánchez Moya, Yolanda, Sopeña, Alfonso, Thorndycraft, V. R., and Barriendos, M.
- Abstract
The Guadalentín River, located in southeast Spain, is considered one of the most torrential rivers in Spain, as indicated by catastrophic events such as the 1879 flood that caused 777 fatalities in the Murcia region. In this paper, flood frequency and magnitude of the upper Guadalentín River were reconstructed using geomorphological evidence, combined with one-dimensional hydraulic modelling and supported by records from documentary sources at Lorca in the lower Guadalentín catchment. Palaeoflood studies were conducted along a 2.5-km reach located at the confluence of the Rambla Mayor (162 km2) and Caramel River (210 km2). These tributaries join at the entrance of a narrow bedrock canyon, carved in Cretaceous limestone, which is 15–30 m wide and 40 m deep. Six stratigraphic profiles were described, the thickest and most complete corresponding to flood benches deposited upstream of the canyon constriction. The stratigraphic and documentary records identify five main phases of increased flood frequency. Phase 1, based on sedimentary palaeoflood evidence alone, occurred at c. AD 950–1200 with at least ten floods with minimum discharge estimates of 15–580 m3 s−1. Phases 2–5, identified through combined sedimentary and documentary evidence occurred at: (a) AD 1648–1672, with eight documentary floods and two palaeofloods exceeding 580–680 m3 s−1 (most probably the AD 1651 and 1653 events); (b) AD 1769–1802, comprising seven documentary floods, of which at least two events (N250 m3 s−1) are preserved in the sedimentary record; (c) AD 1830–1840, with four documentary floods, and at least two events recorded in the stratigraphy (760–1035 m3 s−1); and finally (d) the AD 1877–1900 period that witnessed seven documentary floods, with three palaeofloods exceeding 880 m3 s−1. The palaeoflood and historical flood information indicate an anomalous increase in the frequency of large magnitude floods between AD 1830 and 1900, which can be attributed to climatic variability accentuate
- Published
- 2010
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