Physics
Scientific paper
Dec 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pepi...36..260l&link_type=abstract
Physics of the Earth and Planetary Interiors, Volume 36, Issue 3-4, p. 260-275.
Physics
Scientific paper
Large dip slip earthquakes contribute to the large amount of the relative motion between lithospheric plates. Immediately after an earthquake, displacements correspond to those of a purely elastic Earth while subsequent deviatoric stresses are relaxed by means of viscous creep processes. This effect of stress relaxation leads to surface displacements which can be observed by means of geodetic measurements. Such motions, after large earthquakes, are influenced by the lithosphere and asthenosphere rheology as well as the subduction zone geometry. Utilizing the finite element method, we have modelled the effects of different geometries and rheologies on surface displacements and stresses. We have investigated the effects of different dip angles of the subducting plate, different depths of slab penetration, inclusion of a shallow underthrust slab and different rheologies (linear and nonlinear elasto-viscoplastic). We have shown that it should be possible to discriminate between different rheologies and geometries by means of geodetic measurements of surface displacements and their temporal development.
Lang Gabriel
Neugebauer H. J.
Vilotte Jean-Pierre
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