La serie sísmica de Alhucemas 2016. Partición de la deformación e interacción de estructuras en un límite de placas difuso

  1. J.A. Álvarez-Gómez 1
  2. R. Martín 2
  3. R. Pérez-López 3
  4. D. Stich 2
  5. J.V. Cantavella 4
  6. J.J. Martínez-Díaz 1
  7. J. Morales 2
  8. P. Martínez García 2
  9. J.I. Soto 2
  10. E. Carreño 4
  1. 1 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

  2. 2 Universidad de Granada
    info

    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

  3. 3 Instituto Geológico y Minero de España
    info

    Instituto Geológico y Minero de España

    Madrid, España

    ROR https://ror.org/04cadha73

  4. 4 Red Sísmica Nacional, Instituto Geográfico Nacional
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Revista:
Geotemas (Madrid)

ISSN: 1576-5172

Año de publicación: 2016

Título del ejemplar: IX CONGRESO GEOLÓGICO DE ESPAÑA

Número: 16

Páginas: 491-494

Tipo: Artículo

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Otras publicaciones en: Geotemas (Madrid)

Resumen

The mainshock of seismic series took place on January 25, 2016, with a Mw 6.3 magnitude, which was preceded by a premonitory of magnitude Mw 5.1 on 21 January. We have used 41 focal mechanisms to analyze the seismotectonics and the structural characteristics of the series. To cluster the focal mechanisms we used a hierarchical clustering algorithm using the spatial distribution of the events and also the type of rupture mechanism. For each cluster we have obtained the average focal mechanism and have been associated with a structure or family of structures. We have tested the mechanical compatibility of these structures by Coulomb stress transfer modelling. The mainshock of the series occurred in the Al Idrisi Fault intersecting the Alboran Ridge. This event triggered aftershocks and independent series in strike-slip faults associated with the Al Idrisi Fault System towards the south, but also in reverse faults associated with the lifting of the Alboran Ridge eastward; producing a strain partitioning between both types of structures interacting by stress transfer.

Fuente de los datos: Dialnet