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26 results on '"Osete, Maria-Luisa."'

1. La ocupación durante la Segunda Edad del Hierro del povoado de Crestelos (Meirinhos, Mogadouro, Portugal). Estructuras de combustión y reocupación del Foso 1 como zona productiva/[en] Late Iron Age occupation at Povoado de Crestelos (Meirinhos, Mogadouro, Portugal). Combustion structures and reoccupation of ditch 1 for food processing activities

Author

Blanco, Jose Carlos Sastre, Nicolas, David Sanchez, Perez, Israel Espi, Cardin, Alberto Molina, Campuzano, Saioa A., Ortas, Alicia Palencia, Mcintosh, Gregg, and Osete, Maria Luisa

Published
2022
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11. Evidences of a Geomagnetic Field Intensity Decrease from 500 BCE to 50 CE in South Uzbekistan

Author

Bonilla Alba , Raquel, Gomez-Paccard, Miriam, del Rio, Judit, Martínez Ferreras, Verònica, Gurt-Esparraguera , Jose Maria, Ariño Gil, Enrique, Palencia-Ortas, Alicia, Pavon-Carrasco, Francisco Javier, Martin-Hernandez, Fatima, Chauvin, Annick, Osete, Maria Luisa, Universidad Complutense de Madrid = Complutense University of Madrid [Madrid] (UCM), University of Barcelona, Universidad de Salamanca, Géosciences Rennes (GR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), American Geophysical Union, University of Salamanca, Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)

Subjects
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph]
Abstract

International audience; Recent studies indicate the existence of rapid fluctuations of the geomagnetic field intensity over the last 3000 years. These features have been observed during the first millennium BCE in the Mediterranean area (from Western and Central Europe to the Near East), and in other regions as the Canary and the Azores Islands, China and Korea. Nevertheless, due to the difficulty to obtain precise secular variation intensity curves, the spatial and temporal extension of these events, and the potential link between the different regional events observed are still under discussion. In this study, we focus on the rapid intensity decrease that seems to take place in central Asia during the second half of the 1st millennium BCE. We present 51 new archeointensity from South Uzbekistan, obtained by Thellier-Thellier method, also, rock magnetism experiments have been conducted in order to identify the principal magnetic minerals responsible for the magnetization. The results of those experiments show that the maghemite and/or magnetite, in some cases with low titanium content, are the main magnetic carriers. New data together with 73 previous archaeointensity data, allow us to better defined geomagnetic field intensity changes in South Uzbekistan between 600 BCE and 600 CE. The results indicate a rapid drop out in intensity between 500 BCE and 200 BCE with a minimum of 37.2 µT around 200 BCE – 50 CE. A comparison with different VADMs values available for different regions indicates that similar intensity trends are observed during this period at the continental scale. Finally, the results are compared with Axial Dipole Moment estimations derived from different global models, suggesting that this sharp continental decrease is controlled by non-dipolar sources.

Published
2020

13. First archaeointensity catalogue and intensity secular variation curve forIberia spanning the last 3000 years

Author

Molina-Cardín, Alberto, Campuzano, Saioa, Rivero, Mercedes, Osete, Maria-Luisa., Gomez-Paccard, Miriam, Pérez-Fuentes, Juan Carlos, Pavon-Carrasco, Francisco, Chauvin, Annick, Palencia-Ortas, Alicia, Dubigeon, Isabelle, Departamento de Física de la Tierra, Universidad Complutense de Madrid = Complutense University of Madrid [Madrid] (UCM), Géosciences Rennes (GR), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), European Geosciences Union, Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], [SDU.STU.GP] Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph]
Abstract

Trabajo presentado en la European Geosciences Union General Assembly, celebrada en Viena (Austria), del 23 al 28 de abril de 2017, In this work we present the first archaeomagnetic intensity database for the Iberian Peninsula covering the last 3 millennia. In addition to previously published archaeointensities (about 100 data), we present twenty new highquality archaeointensities. The new data have been obtained following the Thellier and Thellier method including pTRM-checks and have been corrected for the effect of the anisotropy of thermoremanent magnetization upon archaeointensity estimates. Importantly, about 50% of the new data obtained correspond to the first millennium BC, a period for which there was not possible to develop an intensity palaeosecular variation curve before due to the lack of high-quality archaeointensity data. The different qualities of the data included in the Iberian dataset have been evaluated following different palaeomagnetic criteria, such as the number of specimens analysed, the laboratory protocol applied and the kind of material analysed. Finally, we present the first intensity palaeosecular variation curve for the Iberian Peninsula centred at Madrid for the last 3000 years. In order to obtain the most reliable secular variation curve, it has been generated using only selected high-quality data from the catalogue

Published
2017

16. Formal proposal for the Global Boundary Stratotype Section and Point (GSSP) of the Toarcian Stage, at the base of the Polymorphum Zone in the Peniche section (Portugal)

Author

Rocha, Rogério Bordalo da, Mattioli, Emanuela, Duarte, Luís Vítor, Pittet, Bernard, Elmi, Serge, Mouterde, René, Cabral, Maria Cristina, Comas Rengifo, Maria José, Gómez, Juan José, Goy, António, Hesselbo, Stephen P., Jenkyns, Hugh C., Littler8a, Kate, Mailliot2a, Samuel, Oliveira, Luiz Carlos Veiga de, Osete, Maria Luisa, Perilli, Nicola, Pinto, Susana, Ruget, Christiane, and Suan, Guillaume

Subjects
Global Boundary Stratotype , Stratigraphy, Toarcian Stage, Portugal
Published
2016

18. Base of the Toarcian Stage of the Lower Jurassic defined by the Global Boundary Stratotype Section and Point (GSSP) at the Peniche section (Portugal)

Author

Rocha, Rogério Bordalo da, primary, Mattioli, Emanuela, additional, Duarte, Luís Vítor, additional, Pittet, Bernard, additional, Elmi, Serge, additional, Mouterde, René, additional, Cabral, Maria Cristina, additional, Comas-Rengifo, Maria José, additional, Gómez, Juan José, additional, Goy, António, additional, Hesselbo, Stephen P., additional, Jenkyns, Hugh C., additional, Littler, Kate, additional, Mailliot, Samuel, additional, Oliveira, Luiz Carlos Veiga de, additional, Osete, Maria Luisa, additional, Perilli, Nicola, additional, Pinto, Susana, additional, Ruget, Christiane, additional, and Suan, Guillaume, additional

Published
2016
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20. First archaeomagnetic secular variation curve for the Iberian peninsula : Comparison with other data from Western Europe and with global geomagnetic field models

Author

Gomez-Paccard, Miriam, Chauvin, Annick, Lanos, Philippe, Mcintosh, G., Osete, Maria-Luisa., Catanzariti, Gianluca, Ruiz-Martinez, V.C., Nuñez, J.I., Géosciences Rennes (GR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre Armoricain de Recherches en Environnement-Centre National de la Recherche Scientifique (CNRS), Civilisations atlantiques & Archéosciences (C2A), Université de Rennes (UR)-Ministère de la Culture et de la Communication (MCC)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR Histoire, Histoire de l'Art et Archéologie (UFR HHAA), Université de Nantes (UN)-Université de Nantes (UN), Departamento de Física de la Tierra, Universidad Complutense de Madrid = Complutense University of Madrid [Madrid] (UCM), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre Armoricain de Recherches en Environnement-Centre National de la Recherche Scientifique (CNRS), Université de Nantes - UFR Histoire, Histoire de l'Art et Archéologie (UFR HHAA), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture et de la Communication (MCC), Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR Histoire, Histoire de l'Art et Archéologie (UFR HHAA), Universidad Complutense de Madrid [Madrid] (UCM), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ministère de la Culture et de la Communication (MCC)-Université de Rennes 2 (UR2), and Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR Histoire, Histoire de l'Art et Archéologie (UFR HHAA)

Subjects
geomagnetic secular variation, [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], archaeomagnetism, Bayesian statistics, Iberian Peninsula
Abstract

International audience; A first secular variation (SV) curve for the Iberian Peninsula was computed by hierarchical Bayesian method using a total of 134 archaeomagnetic directions with ages ranging from -775 to 1959 A.D. A general agreement is observed between the Iberian curve and the French and German SV curves, although some interesting differences were found, such as the occurrence of lower inclinations between the 11th and 14th centuries in the Iberian curve. The analysis of these three reference curves indicates that SV in western Europe is characterized by three major directional changes at -125, 200, and 1350 A.D. It is suggested that these cusps are regional features of the geomagnetic field. The Iberian curve has been compared with the predictions of the Jackson, CALSK7K.2, and Hongre global models. Despite large differences recognized between these models, even for the dipolar terms, they predict reasonably well the Iberian archaeomagnetic SV.

Published
2006
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