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A High-Resolution Finite Volume Seismic Model to Generate Seafloor Deformation for Tsunami Modeling

机译:用于海啸建模的海底变形的高分辨率有限体积地震模型

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A high-resolution finite volume method approach to incorporating time-dependent slip across rectangular subfaults when modeling general fault geometry is presented. The fault slip is induced by a modification of the Riemann problem to the linear elasticity equations across cell interfaces aligned with the subfaults. This is illustrated in the context of the high-resolution wave-propagation algorithms that are implemented in the open source Clawpack software (www.clawpack.org), but this approach could be easily incorporated into other Riemann solver based numerical methods. Surface deformation results are obtained in both two and three dimensions and compared to those given by the steady-state, homogeneous half-space Okada solution.
机译:提出了一种高分辨率有限体积方法,该方法可以在对一般故障几何形状进行建模时将时间相关的滑动合并到矩形子故障中。通过将Riemann问题修改为与子断层对齐的单元界面上的线性弹性方程,可以诱发断层滑动。这是在开源Clawpack软件(www.clawpack.org)中实现的高分辨率波传播算法的背景下进行说明的,但是这种方法可以轻松地并入其他基于Riemann求解器的数值方法中。在二维和三维上均获得了表面变形结果,并将其与稳态均质半空间Okada解决方案给出的结果进行了比较。

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