基于多模态分离的面波谱分析方法

张大洲; 顾汉明; 熊章强; 肖金红

Volume 34 Issue 6

Jun. 2009

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Article Navigation > Earth Science > 2009 > 34(6): 1012-1018

ZHANG Da-zhou, GU Han-ming, XIONG Zhang-qiang, XIAO Jin-hong, 2009. Spectrum Analysis of Surface Wave Method Based on Multi-Mode Separation. Earth Science, 34(6): 1012-1018.

Citation:

ZHANG Da-zhou, GU Han-ming, XIONG Zhang-qiang, XIAO Jin-hong, 2009. Spectrum Analysis of Surface Wave Method Based on Multi-Mode Separation. Earth Science, 34(6): 1012-1018.

ZHANG Da-zhou, GU Han-ming, XIONG Zhang-qiang, XIAO Jin-hong, 2009. Spectrum Analysis of Surface Wave Method Based on Multi-Mode Separation. Earth Science, 34(6): 1012-1018.

Citation:

ZHANG Da-zhou, GU Han-ming, XIONG Zhang-qiang, XIAO Jin-hong, 2009. Spectrum Analysis of Surface Wave Method Based on Multi-Mode Separation. Earth Science, 34(6): 1012-1018.

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Spectrum Analysis of Surface Wave Method Based on Multi-Mode Separation

1.
Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan 430074, China
2.
Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China
3.
School of Info-Physics and Geomatics Engineering, Central South University, Changsha 410083, China
4.
College of Information Science and Engineering, Central South University, Changsha 410083, China

Received Date: 2008-11-20
Publish Date: 2009-11-25

Abstract

Abstract

Spectrum analysis of surface wave (SASW) is one of the Rayleigh wave exploration methods with higher lateral resolution. Presently, there is a large error in calculating fundamental mode dispersion curve of the Rayleigh wave and the dispersion curve of the higher mode can't be calculated by the SASW method. As a result, it is limited in its application. In this paper, different modes of Rayleigh wave are separated and extracted by Fourier transform (FT method), and then, the dispersion curve will be calculated by the SASW method using the Rayleigh wave data after the separation. According to the analysis of examples, it can be concluded that: (1) when using the SASW method to calculate the fundamental mode dispersion curve, the Rayleigh wave data of fundamental mode should be separated first, and then calculated. Or else, the fundamental mode dispersion curve couldn't be right; (2) it can get higher mode dispersion curve by the SASW method based on multi-mode separation.
- Rayleigh wave,
- Fourier transform,
- SASW method,
- higher mode,
- seismic prospecting

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References(28)

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