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Modelos en elementos finitos de deformaciones volcánicas

Authors: Martín Canca, Ana Amelia;

Modelos en elementos finitos de deformaciones volcánicas

Abstract

[ES] Los modelos de deformaci´on volc´anica relacionan los desplazamientos obsevados en superficie con reservoirios magm´aticos y son ´utiles para determinar las caracter´ısticas de la fuente, fundamentalmente la profundidad, geometr´ıa y cambios de presi´on. Este estudio se centra en el episodio volc´anico ocurrido en la isla de El Hierro (Islas Canarias) que comenz´o en julio de 2011 y termin´o con una erupci´on submarina en octubre de 2011 que dur´o hasta marzo de 2012. Se realiza un estudio exahustivo sobre la segunda etapa pre-eruptiva de dicho episodio y se investiga la posibilidad de ratificar la existencia de una segunda c´amara magm´atica m´as superficial en la zona sur de la isla dadas las discrepancias geod´esicas y petrol´ogicas sobre su existencia. Para ello se realiza una inversi´on de datos geod´esicos in´editos hasta el momento y se considera el M´etodo de Elementos Finitos para determinar la localizaci´on y caracter´ısticas de la fuente en distintos medios, homog´eneos y heterog´eneos. Finalmente, se discutir´an los resultados obtenidos teniendo en cuenta estudios previos para constatar mejor el proceso volc´anico de 2011-2012 en la isla de El Hierro

[ES] Models of volcano deformation relate observed surface displacements to magmatic sources and are useful to constrain the source characteristics, mainly depth, geometry and pressure change. This study focuses on the volcanic unrest in El Hierro Island (Canary Islands) that initiated on July 2011 and ended up with the submarine eruption lasting from October 2011 to March 2012. An exhaustive study of the second stage of the pre-eruptive unrest is conducted, given the discrepancies between geodetic and petrological data, and it is investigated the possibility of evidencing the existence of a second magmatic source located at shallower levels in the south of the island. Therefore, it is carried out an inversion of geodetic data unpublished up until now and it is used the Finite Elements Method to determine the location and characteristics of the source in different homogeneous and heterogeneous media. Finally, the results obtained will be discussed taking into account previous interpretations to better constrain the magmatic plumbing system in El Hierro 2011-2012.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green