简单一维速度模型中射线矩阵法与有限差分法的比较

IF 0.5 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Studia Geophysica et Geodaetica Pub Date : 2019-05-27 DOI:10.1007/s11200-018-1152-9

Ludĕk Klimeš

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引用次数: 0

摘要

射线矩阵法可以将射线方法的适用性扩展到包含细各向同性或各向异性层薄叠的三维非均质速度模型。在覆盖均匀半空间的低速层组成的简单一维速度模型中，将射线矩阵合成地震图与有限差分合成地震图进行了比较。射线矩阵与有限差分合成地震图的一致性很好。此外，射线矩阵地震图不受极薄层、各向异性和有限差分典型的非反射边界反射的影响。

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Comparison of ray-matrix and finite-difference methods in a simple 1-D velocity model

The ray-matrix method can extend the applicability of ray methods to 3-D heterogeneous velocity models containing thin stacks of fine isotropic or anisotropic layers. Ray-matrix synthetic seismograms are compared with finite-difference synthetic seismograms in a simple 1-D velocity model, consisting of a low velocity layer covering a homogeneous halfspace. The agreement between the ray-matrix and finite-difference synthetic seismograms is very good. Moreover, the ray-matrix seismograms do not suffer from extremely thin layers, from anisotropy, and from reflections from the non-reflecting boundaries typical for finite differences.

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来源期刊

Studia Geophysica et Geodaetica 地学-地球化学与地球物理

CiteScore

1.90

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Studia geophysica et geodaetica is an international journal covering all aspects of geophysics, meteorology and climatology, and of geodesy. Published by the Institute of Geophysics of the Academy of Sciences of the Czech Republic, it has a long tradition, being published quarterly since 1956. Studia publishes theoretical and methodological contributions, which are of interest for academia as well as industry. The journal offers fast publication of contributions in regular as well as topical issues.