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Mapa de esfuerzos de Europa a partir de Mecanismos focales calculados desde el Tensor de Momento Sísmico

Olaiz Campos, Antonio José and Vicente Muñoz, Gerardo de and Muñoz Martín, Alfonso and Vegas, Ramón (2006) Mapa de esfuerzos de Europa a partir de Mecanismos focales calculados desde el Tensor de Momento Sísmico. Geogaceta, 40 . pp. 55-58. ISSN 0213-683X

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Abstract

This work shows a new stress map for Europe obtained from the inversion of earthquakes focal mechanisms calculated with the centroid tensor method (Dzieownski et al., 1982). An amount of 1608 focal mechanisms have been selected with several quality criteria from different catalogues (CMT Harvard, ETH, Med-Net, I.G.N. and I.A.G.) from 1973 to present-day. Values for the maximum horizontal stress and the shape factor of the ellipsoid (horizontal/vertical stress) have been calculated following the Reches (1983) and De Vicente (1988) slip model. The local results have been interpolated to a 1ºx1º regular grid in which the relation between tectonic horizontal stress and vertical load has been taken into account. The final map shows a good correlation with the primary tectonic forces generated in the plate boundaries and the local perturbations related with main crustal heterogeneities as suggested by Gölke and Coblentz (1996).

Item Type:Article
Uncontrolled Keywords:Active stress; Focal mechanism; Centroid moment tensor; Europe
Subjects:Sciences > Geology > Seismology
Sciences > Geology > Geodynamics
ID Code:6100
Deposited On:08 Mar 2007
Last Modified:06 Feb 2014 07:47

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