Spectral-Element Methods

Spectral-Element Methods
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谱元法

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发表时间:
2011
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通讯作者:
A. Fichtner
A. Fichtner
中科院分区:
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作者:
A. Fichtner

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谱元法是一种高阶数值方法,使我们能够求解 3D 异质地球模型中的地震波方程。该方法能够使网格适应不规则的表面地形和地球内部的可变波长。此外,谱元法可以在不增加每个波长的网格点数量的情况下产生表面波的精确解,从而克服了有限差分法的一些最严重的缺陷。
The spectral-element method is a high-order numerical method that allows us to solve the seismic wave equation in 3D heterogeneous Earth models. The method enables adaptation of the mesh to the irregular surface topography and to the variable wavelengths inside the Earth. Moreover, the spectral-element method yields accurate solutions for surface waves without increasing the number of grid points per wavelength , therefore overcoming some of the most severe deficiencies of the finite-difference method.