Journal Article

Fast numerical simulation of crustal deformation using a three-dimensional high-fidelity model

Tsuyoshi Ichimura, Ryoichiro Agata, Takane Hori, Kazuro Hirahara and Muneo Hori

in Geophysical Journal International

Volume 195, issue 3, pages 1730-1744
Published in print December 2013 | ISSN: 0956-540X
Published online September 2013 | e-ISSN: 1365-246X | DOI: http://dx.doi.org/10.1093/gji/ggt320
Fast numerical simulation of crustal deformation using a three-dimensional high-fidelity model

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The accumulation of observational data at high resolution has increased the demand for numerical simulation of crustal deformation using 3-D high-fidelity models. In this study, an automatic mesh-generation method for a 3-D high-fidelity finite element model without computer-aided design model or manual tuning was developed and then used in a fast numerical simulation of crustal deformation. The calculation is accelerated by an iterative solver based on a geometric multigrid, variable preconditioning and multiple-precision arithmetic. After verifying the accuracy of the proposed method, we conducted a numerical simulation of the crustal deformation of a giant earthquake to demonstrate its usefulness.

Keywords: Numerical solutions; Numerical approximations and analysis; Computational seismology; Kinematics of crustal and mantle deformation; Pacific Ocean

Journal Article.  8590 words.  Illustrated.

Subjects: Geophysics

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