Seismo-Acoustic Benchmark Problems Involving Sloping Solid–Solid Interfaces and Variable Topography
Seismo-Acoustic Benchmark Problems Involving Sloping Solid–Solid Interfaces and Variable Topography
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涉及倾斜固-固界面和可变地形的地震声学基准问题
DOI：
10.1142/s0218396x16500193
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发表时间：
2016
影响因子：
--
通讯作者：
W. Siegmann
中科院分区：
文献类型：
--
作者：
Katherine F. Woolfe;M. D. Collins;D. Calvo;W. Siegmann
地震声学抛物方程的准确性进行了测试，涉及倾斜的固体-固体界面和可变地形的问题。该方法涉及近似的介质中的一系列的范围无关的区域，使用抛物波方程传播的字段通过每个区域，并应用单散射近似，以获得跨区域之间的垂直界面的传输场。地震声学中距离相关问题的抛物方程方法的准确性之前已在小斜率极限下进行了测试。它在这里测试的问题，涉及较大的斜坡，使用有限元模型生成参考解决方案。
The accuracy of the seismo-acoustic parabolic equation is tested for problems involving sloping solid–solid interfaces and variable topography. The approach involves approximating the medium in terms of a series of range-independent regions, using a parabolic wave equation to propagate the field through each region, and applying a single-scattering approximation to obtain transmitted fields across the vertical interfaces between regions. The accuracy of the parabolic equation method for range-dependent problems in seismo-acoustics was previously tested in the small slope limit. It is tested here for problems involving larger slopes using a finite-element model to generate reference solutions.