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Establishment of a non-permanent GPS network to monitor the recent NE-SW deformation in the Granada Basin (Betic Cordillera, southern Spain)

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Gil, A.J. and Rodríguez Caderot, Gracia and Lacy de, María Clara and Ruíz, A.M. and Sanz De Galdeano-Equiza, Carlos and Alfaro, Pedro (2002) Establishment of a non-permanent GPS network to monitor the recent NE-SW deformation in the Granada Basin (Betic Cordillera, southern Spain). Studia Geophysica et Geodaetica, 46 (3). pp. 395-409. ISSN 0039-3169

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Abstract

The Granada Basin (Central Betic Cordillera), one of the most seismically active areas of the Iberian Peninsula, is currently subjected to NW-SE compression and NE-SW extension. The present day extension is accommodated by normal faults with various orientations but particularly with a NW-SE strike. At the surface, these active NW-SE normal faults are mainly concentrated on the NE part of the Basin. In this part we have selected a 15-km long segment where several active normal faults crop out. Using the marine Tortonian rocks as a reference, we have calculated a minimum extensional rate of 0.15-0.30 mm/year. The observed block rotation, the listric geometry of faults at depth and the distribution of seismicity over the whole Basin, indicate that this rate is a minimum value. In the framework of an interdisciplinary research project a non-permanent GPS-network has been established in the central sector of Betic Cordillera to monitor the crustal deformations. The first two observation campaigns were done in 1999 and 2000.


Item Type:Article
Uncontrolled Keywords:Active Tectonics; GPS network, crustal deformation; Betic Cordillera
Subjects:Sciences > Mathematics > Geodesy
ID Code:17786
Deposited On:21 Jan 2013 11:29
Last Modified:19 Jun 2018 07:33

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