垂直横向各向同性介质中的波方程面波频散反演

IF 2.1 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Applied Geophysics Pub Date : 2025-08-09 DOI:10.1016/j.jappgeo.2025.105899

Chengang Zhang, Jing Li, Hui Liu, Lige Bai, Ruizhe Sun, Chang Zhang

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引用次数: 0

摘要

波方程频散反演（WD）方法不需要假设层状介质，不依赖于源小波，是重建横波速度结构的一种鲁棒方法。理论分析表明，表面波色散曲线对各向异性参数非常敏感。传统的WD是基于各向同性介质，忽略了地下结构的各向异性特征。为了校正和评价各向异性效应，提出了基于垂直横向各向同性介质（VTI-LWD）的各向异性Love波方程色散反演理论。综合和现场数据表明，该方法在估计各向异性参数的同时，显著提高了横波速度模型的精度。这为近地表地层构造提供了更精确的多参数信息。

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Wave-equation surface waves dispersion inversion in vertical transverse isotropic media

The wave-equation dispersion inversion (WD) method is a robust approach for reconstructing the S-wave velocity structure, which does not require the assumption of layered media and is independent of source wavelets. However, theoretical analysis demonstrates that surface wave dispersion curves are sensitive to anisotropic parameters. Conventional WD is based on isotropic media, neglecting the anisotropic characteristics of the subsurface structure. To correct and evaluate the anisotropy effect, we present the theory for anisotropic Love wave-equation dispersion inversion (LWD) method based on the vertical transverse isotropic media (VTI-LWD). The synthetic and field data demonstrate that the proposed VTI-LWD significantly improves the accuracy of the S-wave velocity model while simultaneously estimating the anisotropic parameter. This provides more accurate multi-parameter information for near-surface stratigraphic structures.

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来源期刊

Journal of Applied Geophysics 地学-地球科学综合

CiteScore

3.60

自引率

10.00%

发文量

274

审稿时长

4 months

期刊介绍： The Journal of Applied Geophysics with its key objective of responding to pertinent and timely needs, places particular emphasis on methodological developments and innovative applications of geophysical techniques for addressing environmental, engineering, and hydrological problems. Related topical research in exploration geophysics and in soil and rock physics is also covered by the Journal of Applied Geophysics.