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Studia Geophysica et Geodaetica

, Volume 46, Issue 3, pp 395–410 | Cite as

Establishment of a Non-Permanent GPS Network to Monitor the Recent NE-SW Deformation in the Granada Basin (Betic Cordillera, Southern Spain)

  • A. J. Gil
  • G. Rodríguez-Caderot
  • M. C. Lacy
  • A. M. Ruiz
  • C. Sanz de Galdeano
  • P. Alfaro
Article

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.

active tectonics GPS network crustal deformation Betic Cordillera 

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Copyright information

© StudiaGeo s.r.o. 2002

Authors and Affiliations

  • A. J. Gil
    • 1
  • G. Rodríguez-Caderot
    • 2
  • M. C. Lacy
    • 3
  • A. M. Ruiz
    • 1
  • C. Sanz de Galdeano
    • 4
  • P. Alfaro
    • 5
  1. 1.Dept. Ing. Cartográfica, Geodésica y Fotogrametría E.P.S.Universidad de JaénJaénSpain
  2. 2.Dept. Astronomía y GeodesiaUniversidad Complutense de MadridMadridSpain
  3. 3.Facoltà di Ingegneria di ComoInstituto Politecnico di MilanoItaly
  4. 4.Instituto Andaluz de Ciencias de la TierraFacultad de CienciasGranadaSpain csanz@ugr.es
  5. 5.Dept. Ciencias de la TierraUniversidad de AlicanteSan Vicente del Raspeig, AlicanteSpain

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