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Solving the Seismic Inverse Problem Using an Ensemble of Models: A Case Study of Inversion of Receiver Functions
Doklady Earth Sciences ( IF 0.9 ) Pub Date : 2021-03-04 , DOI: 10.1134/s1028334x21010049
I. M. Aleshin

Abstract

This paper proposes a new method for determining the seismic parameters of the subsurface below a seismic station using the waveforms of converted waves. The subsurface below the seismic station is represented by a plane-layered model. In contrast to other methods, the new approach does not involve determining all the elastic parameters of each of the layers. Instead, it is proposed to use a combination of parameters related directly to the object under study. In our case, we estimate the depth dependencies of the seismic velocity and density. The quality of solutions is assessed based on the rms distance between the observed waveforms and the seismograms derived from the averaged depth dependences of the seismic parameters. The approach proposed is applicable to a wide range of inverse problems in geophysics.



中文翻译:

使用模型集合解决地震反问题:接收机函数反演的案例研究

摘要

本文提出了一种利用转换波的波形确定地震台下地下地震参数的新方法。地震台站以下的地下由平面分层模型表示。与其他方法相比,新方法不涉及确定每个层的所有弹性参数。相反,建议使用与研究对象直接相关的参数组合。在我们的案例中,我们估计了地震速度和密度的深度依赖性。根据观察到的波形与地震图之间的均方根距离来评估解决方案的质量,这些均方根值是根据地震参数的平均深度依赖性得出的。提出的方法适用于地球物理学中的许多反问题。

更新日期:2021-03-04
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