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6 results on '"tierra blanca"'

1. Problemática y conocimiento actual de Las tefras tierra blanca joven en el área Metropolitana de San Salvador, El Salvador Problematic and current knowledge of the tierra blanca joven tephras in the metropolitan area of San Salvador, El Salvador

Author

José A. Chávez, Walter Hernández, and Lubomir Kopecky

Subjects
Tierra Blanca geotecnia, parcialmente saturado, succión, colapsable, erosión, movimiento de ladera, Tierra Blanca, geotechnical, unsaturated, suction, collapsible, erosion, mass movement, Geology, QE1-996.5
Abstract

En la actualidad el Área Metropolitana de San Salvador experimenta problemas graves de movimientos de ladera, erosión, colapso o asentamientos del terreno; fenómenos que son englobados popularmente en El Salvador por el término “cárcavas”. Esta problemática se presenta principalmente en las tefras volcánicas llamadas Tierra Blanca Joven (TBJ) producto de la última erupción pliniana de la Caldera de Ilopango, cuyos productos son una intercalación de estratos de piroclastos de caída, flujos y oleadas piroclásticos. Las tefras son parcialmente saturadas y la información geotécnica muestra la disminución de resistencia al corte y colapso al ser saturadas. Para caracterizar adecuadamente este material es necesario conocer la relación del contenido de humedad con los cambios de volumen y la cohesión aparente, que puede estar relacionada a la succión y a cementación. El entendimiento del comportamiento de los materiales geológicos puede ayudar en la simulación de estabilidad de taludes y diseño geotécnico en general.Currently the Metropolitan Area of San Salvador (AMSS) is experimenting serious problems of mass movements, erosion, collapse or settlements, phenomena that in El Salvador are popularly encompassed by the term “carcavas”. This problematic is presented mainly in the volcanic tephras Tierra Blanca Joven (TBJ), product of the last plinian eruption of Ilopango Caldera, whose products are an intercalation of pyroclastic fall, flows and surge. The tephras are unsaturated and the geotechnical information shows a decrease of shear strength and collapse when saturated. To characterize properly this material is important to know the relationship of moisture content with the volume changes and apparent cohesion, which are related to suction and cementation. The understanding of the behavior of the geological materials can help in running slope stability simulations and geotechnical design in general.

Published
2012

2. Mapeo de ingeniería geológica en parte sur del área metropolitana de San Salvador Engineering geology mapping in the southern part of the metropolitan area of San Salvador

Author

José A Chávez, Jan Valenta, Jan Schröfel, Walter Hernandez, and Jiří Šebesta

Subjects
Ingeniería geológica, método de bandas, geología, formación San Salvador, formación bálsamo, Tierra Blanca, Engineering geology, stripe method, geology, San Salvador Formation, Balsamo Formation, Geology, QE1-996.5
Abstract

El uso de mapas geológicos clásicos que agrupan los estratos por edad u origen, dificulta la interpretación y uso para diseños de ingeniería civil o planificación urbana, para las personas sin conocimientos profundos en geología. Debido a esto se ha llevado a cabo mapeo de ingeniería geológica en sector sur del Área Metropolitana de San Salvador, haciendo uso de la metodología de bandas. El objetivo de la metodología es que la información geológica, peligrosidad geológica y recomendaciones geotécnicas puedan representarse y agruparse dependiendo de las características intrínsecas de cada zona. Esta información puede ser fácilmente interpretada por los planificadores urbanos, constructores privados y agencias gubernamentales. La debilidad en la recopilación e investigación de información geológica y geotécnica en El Salvador, son unas de las razones de la problemática que experimenta la región, indicando la importancia de mejorar el manejo del riesgo, así como la mecánica de suelos y de rocasThe use of classic geologic maps, where geological layers are grouped according to their age or origin, makes difficult the interpretation and use for civil engineer design or urban planning to people without deep knowledge in geology. Due to this reason engineering geological mapping has been carried out in the southern part of the Metro- politan Area of San Salvador using the stripe method. The objective of the methodology is that geological information, geological hazards and geotechnical recommendations as well, can be represented and grouped depending on the intrinsic characteristics of each zone. This information can be easily interpreted for urban planners, private builders and government agencies. The weakness in the compilation and research of geological and geotechnical information in El Salvador, are some of the reasons for the current problems that experiment the region, indicating the importance of improving risk management, as well as soil and rocks mechanics

Published
2012

3. ENGINEERING GEOLOGY MAPPING IN THE SOUTHERN PART OF THE METROPOLITAN AREA OF SAN SALVADOR.

Author

Chávez, José A., Valenta, Jan, Schröfel, Jan, Hernandez, Walter, and Šebesta, Jiří

Subjects
*GEOLOGICAL mapping, *CIVIL engineering, *GEOTECHNICAL engineering, *URBAN planning & the environment, *URBAN planning, *SOIL mechanics, *EQUIPMENT & supplies
Abstract

The use of classic geologic maps, where geological layers are grouped according to their age or origin, makes difficult the interpretation and use for civil engineer design or urban planning to people without deep knowledge in geology. Due to this reason engineering geological mapping has been carried out in the southern part of the Metropolitan Area of San Salvador using the stripe method. The objective of the methodology is that geological information, geological hazards and geotechnical recommendations as well, can be represented and grouped depending on the intrinsic characteristics of each zone. This information can be easily interpreted for urban planners, private builders and government agencies. The weakness in the compilation and research of geological and geotechnical information in El Salvador, are some of the reasons for the current problems that experiment the region, indicating the importance of improving risk management, as well as soil and rocks mechanics. [ABSTRACT FROM AUTHOR]

Published
2012

4. The Development of Automated Information Systems to reduce the Digital Divide in Agricultural Communities: The Case of the Agricultural Information Service in Tierra Blanca (SIT), Costa Rica

Author

Thomas, Laura Solera, Alvarado, Daniela Muñoz, Araya, Carlos Angulo, Ramírez, José Joaquín Brenes, Ramírez, José Manuel Brenes, Víquez, Gabriel Brenes, Acuña, Sonia Gómez, and Redondo, Fausto Víquez

Subjects
Digital divide agricultural library, information systems, information access, digital literacy, Tierra Blanca, Costa Rica
Abstract

This study aims to analyze the phenomena of the digital divide in the community of Tierra Blanca and presents the case of the Agricultural Information Service in Tierra Blanca as a solution to reduce the digital divide in this farming community. Based on the promise that Information and Communication Technologies (ICT) have a great importance in today´s society, the article analyzes the concept of digital divide composed by three components: access to information, connectivity and digital literacy, contextualized in farming communities. The paper studies the relationship between the digital divide and the productive, political, economic, social, cultural and commercial business development of small farmers. Based on the collaboration of a group of farmers in Tierra Blanca, the impact of the digital divide is considered specifically in this community. The case of the Agricultural Information Service in Tierra Blanca is presented as an automated information system that allows to combat lags generated by this phenomena. The study concludes that the case of the Agricultural Information Service in Tierra Blanca is an initiative that has reduced the digital divide in a comprehensive way for farmers, but the development of comprehensive policies and strategies at the community and national levels is necessary, seeking the involvement of various institutions and communities., International Journal on Food System Dynamics, Vol 5, No 4 (2014): Special issue: Challenge of IT, Innovation and Knowledge

Published
2015
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5. Mapeo de ingeniería geológica en parte sur del Área Metropolitana de San Salvador

Author

Chávez, José A., Valenta, Jan, Schröfel, Jan, Hernandez, Walter, and Šebesta, Jiří

Subjects
formación san salvador, geology, formación bálsamo, ingeniería geológica, tierra blanca, engineering geology, san salvador formation, balsamo formation, método de bandas, geología, stripe method
Abstract

The use of classic geologic maps, where geological layers are grouped according to their age or origin, makes difficult the interpretation and use for civil engineer design or urban planning to people without deep knowledge in geology. Due to this reason engineering geological mapping has been carried out in the southern part of the Metropolitan Area of San Salvador using the stripe method. The objective of the methodology is that geological information, geological hazards and geotechnical recommendations as well, can be represented and grouped depending on the intrinsic characteristics of each zone. This information can be easily interpreted for urban planners, private builders and government agencies. The weakness in the compilation and research of geological and geotechnical information in El Salvador, are some of the reasons for the current problems that experiment the region, indicating the importance of improving risk management, as well as soil and rocks mechanics. El uso de mapas geológicos clásicos que agrupan los estratos por edad u origen, dificulta la interpretación y uso para diseños de ingeniería civil o planificación urbana, para las personas sin conocimientos profundos en geología. Debido a esto se ha llevado a cabo mapeo de ingeniería geológica en sector sur del Área Metropolitana de San Salvador, haciendo uso de la metodología de bandas. El objetivo de la metodología es que la información geológica, peligrosidad geológica y recomendaciones geotécnicas puedan representarse y agruparse dependiendo de las características intrínsecas de cada zona. Esta información puede ser fácilmente interpretada por los planificadores urbanos, constructores privados y agencias gubernamentales. La debilidad en la recopilación e investigación de información geológica y geotécnica en El Salvador, son unas de las razones de la problemática que experimenta la región, indicando la importancia de mejorar el manejo del riesgo, así como la mecánica de suelos y de rocas.

Published
2012

6. MYSTERY AT THE RANCH.

Author

SANDELL, CLAYTON

Abstract

ROBIN ROBERTS (ABC NEWS) (Off-camera) We're gonna move on now to that ranch for troubled teams under investigation for child abuse. [ABSTRACT FROM PUBLISHER]

Published
2013

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