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

Olaiz Campos, Antonio José; Vicente Muñoz, Gerardo De; Muñoz Martín, Alfonso; Vegas Martínez, Ramón

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

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Official URL

http://www.geogaceta.com

Publication date

2006

Authors

Olaiz Campos, Antonio José

Vicente Muñoz, Gerardo De

Muñoz Martín, Alfonso

Vegas Martínez, Ramón

Publisher

Sociedad Geológica de España

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URI

https://hdl.handle.net/20.500.14352/52549

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).