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Communication dans un congrès
Finite difference simulations of seismic wave propagation for understanding earthquake physics and predicting ground motions: Advances and challenges
Abstract : Seismic waves radiated from an earthquake propagate in the Earth and the ground shaking is felt and recorded at (or near) the ground surface. Understanding the wave propagation with respect to the Earth's structure and the earthquake mechanisms is one of the main objectives of seismology, and predicting the strong ground shaking for moderate and large earthquakes is essential for quantitative seismic hazard assessment. The finite difference scheme for solving the wave propagation problem in elastic (sometimes anelastic) media has been more widely used since the 1970s than any other numerical methods, because of its simple formulation and implementation, and its easy scalability to large computations. This paper briefly overviews the advances in finite difference simulations, focusing particularly on earthquake mechanics and the resultant wave radiation in the near field. As the finite difference formulation is simple (interpolation is smooth), an easy coupling with other approaches is one of its advantages. A coupling with a boundary integral equation method (BIEM) allows us to simulate complex earthquake source processes.
Littérature citée [37 références]
https://hal-brgm.archives-ouvertes.fr/hal-00726430
Contributeur : Hideo Aochi Connectez-vous pour contacter le contributeur
Soumis le : jeudi 30 août 2012 - 10:36:16
Dernière modification le : lundi 11 octobre 2021 - 13:02:02
Archivage à long terme le : : vendredi 16 décembre 2016 - 09:18:01
Contributeur : Hideo Aochi Connectez-vous pour contacter le contributeur
Soumis le : jeudi 30 août 2012 - 10:36:16
Dernière modification le : lundi 11 octobre 2021 - 13:02:02
Archivage à long terme le : : vendredi 16 décembre 2016 - 09:18:01
Fichier
Aochietal_CCP2012.pdf
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