Modeling of wave dispersion using continuous wavelet transforms II:: Wavelet-based frequency-velocity analysis

被引：14

作者：

Kulesh, M. ^{[1
]}

Holschneider, M. ^{[1
]}

Ohrnberger, M. ^{[2
]}

Lueck, E. ^{[2
]}

机构：

[1] Univ Potsdam, Inst Math, D-14469 Potsdam, Germany

[2] Univ Potsdam, Inst Geosci, D-14414 Potsdam, Germany

来源：

PURE AND APPLIED GEOPHYSICS | 2008年 / 165卷 / 02期

关键词：

continuous wavelet transform; multimode signal; dispersion; phase deformation;

D O I：

10.1007/s00024-008-0299-7

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

In this paper, we show how to estimate the phase velocities of multi-mode signals as present in 2-D shallow seismic surveys along a seismic line with the help of a method that is based on the deformation of the wavelet spectra of the seismic traces. In analogy with frequency-wavenumber (f-k) analysis, we perform "frequency-velocity" analysis using the correlations between phases of the wavelet spectra. Our method has two tuning parameters - the parameter of an analyzing wavelet and the parameter of a threshold operation. Numerical and experimental examples are presented to illustrate how the method accurately extracts the phase velocity from single- and multi-mode signals.

引用

页码：255 / 270

页数：16

共 14 条

[11] Array seismology: Methods and applications [J].