A comparison is performed between predictions of coseismic and post-seismic deformations, based on two different earth models. The main purpose of this work is to clarify in a rigorous manner the role of sphericity in the assessment of both residual deformations and large-scale post-seismic motions. The two models considered in this study are commonly employed for predictions of post-seismic deformations. They exhibit the common feature of a layered viscoelastic structure but differ in their global geometrical features, the first being characterized by a flat-earth approximation and the second by a spherical geometry. The purpose of this study is twofold. First, we wish to assess the influence of sphericity in predictions of post-seismic deformations, especially in the far field of major earthquakes. Second, we wish to elucidate the potential role of stress migration in earthquake triggering over great distances.

Stress diffusion following large earthquakes: a comparison between spherical and flat‐earth models

SPADA, GIORGIO
1998-01-01

Abstract

A comparison is performed between predictions of coseismic and post-seismic deformations, based on two different earth models. The main purpose of this work is to clarify in a rigorous manner the role of sphericity in the assessment of both residual deformations and large-scale post-seismic motions. The two models considered in this study are commonly employed for predictions of post-seismic deformations. They exhibit the common feature of a layered viscoelastic structure but differ in their global geometrical features, the first being characterized by a flat-earth approximation and the second by a spherical geometry. The purpose of this study is twofold. First, we wish to assess the influence of sphericity in predictions of post-seismic deformations, especially in the far field of major earthquakes. Second, we wish to elucidate the potential role of stress migration in earthquake triggering over great distances.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11576/2514785
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