第103回総合防災セミナー(7/18)／103rd Sogo Bosai seminar (July, 18)

宇治キャンパス本館E-517D　および　オンライン

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Between 2016 and 2022, a SATREPS project between Mexico and Japan enabled the deployment of an amphibious observation network along the Mexican Pacific coast. The quality and volume of the seismological and geodetic data collected allowed us to reconstruct the tectonic kinematics of the Mexican subduction zone using the ELADIN code, developed as part of that initiative.
In mid-2024, a new SATREPS project was launched, now including El Salvador as a participating country. In addition to continuing offshore data acquisition along the Mexican coast, this new phase aims to reproduce the observed tectonic kinematics through computational modeling in order to better understand the underlying physics, i.e. the dynamics of the tectonic processes involved.
In this seminar, I will present our ongoing efforts to achieve this goal. I will begin by discussing the implementation of rate-and-state friction laws within a discontinuous Galerkin framework for dynamic rupture modeling. Then, I will describe the beginning of our work on seismic cycle simulation in the Mexican subduction zone using the FASTDASH code, which enables quasi-dynamic simulations via the Boundary Element Method (BEM) accelerated by Hierarchical Matrices.