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| Titel |
DInSAR Coseismic Deformation of the May 2011 Mw 5.1 Lorca Earthquake (southeastern Spain) |
| VerfasserIn |
T. Frontera, A. Concha, P. Blanco, A. Echeverria, X. Goula, R. Arbiol, G. Khazaradze, F. Pérez, E. Suriñach |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1869-9510
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| Digitales Dokument |
URL |
| Erschienen |
In: Solid Earth ; 3, no. 1 ; Nr. 3, no. 1 (2012-04-02), S.111-119 |
| Datensatznummer |
250000840
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| Publikation (Nr.) |
 copernicus.org/se-3-111-2012.pdf |
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| Zusammenfassung |
The coseismic superficial deformation at the region of Lorca (Murcia,
southeastern Spain) due to the Mw 5.1 earthquake on 11 May 2011 was
characterized by a multidisciplinary team, integrating information from
DInSAR, GPS and numerical modelling techniques.
Despite the moderate magnitude of the event, quantitative information was
obtained from the interferometric study of a pair of TerraSAR-X images. The
DinSAR results defined the trace of the fault plane and evidenced uplift of
the hanging wall block in agreement with the estimated deformation obtained
through an elastic rupture dislocation numerical model. Meanwhile for the
footwall block, interferometric results showed that tectonic deformation is
masked by an important subsidence related to groundwater extraction
previously identified at the area of study.
Horizontal crustal deformation rates and velocity vectors, obtained from GPS
stations existent at the area, were also coherent with the tectonic setting
of the southern margin of the Iberian Peninsula and with the focal mechanism
calculated for the Lorca event. The analysis of a continuous GPS site in
Lorca showed good agreement with the horizontal N–S direction component
relative to the numerical model and tectonics of the region.
This is the first time at this seismic active area that a multi-technique
analysis has been performed immediately after the occurrence of a seismic event,
comparing the existing deformation data with a theoretical numerical model
based on estimated seismic rupture dislocation. |
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