La serie sísmica de Lorca de 2011Parámetros de fallamiento y relocalización hipocentral

  1. J. Morales 1
  2. J.V. Cantavella 2
  3. F. de L. Mancilla 1
  4. L. Lozano 2
  5. D. Stich 1
  6. E. Herraiz 2
  7. J.B. Martín 1
  8. J.A. López Comino 1
  9. J.M. Martínez-Solares 2
  1. 1 Universidad de Granada
    info

    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

  2. 2 Instituto Geográfico Nacional. Madrid (España) .
Revue:
Geotemas (Madrid)

ISSN: 1576-5172

Année de publication: 2012

Titre de la publication: VIII Congreso Geológico de España, Oviedo, 17-19 de julio, 2012.

Número: 13

Pages: 1662-1665

Type: Article

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D'autres publications dans: Geotemas (Madrid)

Résumé

The Lorca 2011 seismic series was recorded by an unprecedented large set of high quality on scale broad band seismograms and strong motion accelerograms. The volume of data generated has been used to precisely define the hypocentral location and to obtain the principal faulting parameters by the regional moment tensor inversion. The regional moment tensor solutions was only possible for three earthquakes the foreshock and mainshock events and the main aftershock. With slight variations the three focal mechanisms show reverse fault solution with strike slip component. The moment magnitude (Mw) obtained from the inverted seismic moment are 4.6, 5.2 and 3.9. The precise relocation with double-difference algorithm shows epicentral solutions distributed following a NE-SW strike, subparallel to the Alhama de Murcia fault. The hypocentral solutions are concentrated in the 2-5 km range. The focal mechanisms solutions for the three larger earthquakes, the epicentral and depth distributions of the seismic series show good relationship with the surface geometry and regime of the Alhama de Murcia fault.

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