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Tasas de deformación GPS en la cuenca del Bajo Segura (Cordillera Bética oriental)

Authors: Sánchez Alzóla, Alberto; Borque, María Jesús; Martín Rojas, Iván; García Tortosa, F.J.; Alfaro García, Pedro; Estévez, Antonio; Molina, Sergio; +7 Authors

Tasas de deformación GPS en la cuenca del Bajo Segura (Cordillera Bética oriental)

Abstract

En este trabajo hemos cuantificado las tasas de deformación actual de la cuenca del Bajo Segura (NE del corredor de cizalla de la Bética oriental), a partir del análisis de una red GPS con 11 vértices geodésicos. Se han analizado los datos de cuatro campañas GPS entre junio de 1999 y enero de 2013, que han sido procesados con la versión 6.2 del software GIPSY-OASIS. Este software utiliza la técnica de posicionamiento puntual de precisión conocido por las siglas PPP. Se observa un acortamiento ~N-S en toda la cuenca de mayor magnitud en el sur, en la zona de falla del Bajo Segura, con valores que varían de oeste a este entre 0,73 y 0,24 mm/año. En el borde septentrional de la cuenca, en la zona de falla de Crevillente, los valores de acortamiento N-S son menores. Sin embargo, en esta falla se ha observado un movimiento lateral sinistrorso que, en la componente E-O, varía entre 0,44 y 0,75 mm/año.

We estimate the present deformation rates of the Bajo Segura Basin (NE end of the Eastern Betic shear zone), from the analysis of a GPS network with 11 sites. We analyze the data from four observation campaigns carried out between June 1999 and January 2013.We used the 6.2 version of GIPSYOASIS software to process GPS data in Precise Point Positioning mode (PPP). It is observed a ~N-S shortening in the whole basin, higher in the south, along the Bajo Segura fault zone, with rates varying from West to East between 0.73 and 0.24 mm/yr. In the northern border of the basin, along the Crevillente fault zone, N-S deformation rates are lower. However, it is observed a left-lateral movement of this fault zone varying between 0.44 and 0.75 mm/yr in the E-W direction.

Este trabajo ha sido financiado por los proyectos del Ministerio de Economía y Competitividad AYA2010-15501 y CGL2011-30153-C02-02 y por el proyecto CSD2006-0041 (European Regional Development Fund-ERDF).

Country
Spain
Keywords

Bajo Segura basin, Tasa de deformación, Active tectonics, Cordillera Bética, Betic Cordillera, GPS, Cuenca del Bajo Segura, Física de la Tierra, Deformation rates, Geodinámica Interna, Tectónica activa

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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
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