| 基于多模态分离的面波谱分析方法 |
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| 引用本文： | 张大洲,顾汉明,熊章强,肖金红.基于多模态分离的面波谱分析方法[J].地球科学,2009(6). |
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| 作者姓名： | 张大洲 顾汉明 熊章强 肖金红 |
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| 作者单位： | 中国地质大学地球物理与空间信息学院;中国地质大学构造与油气资源教育部重点实验室;中南大学信息物理工程学院;中南大学信息科学与工程学院; |
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| 基金项目： | 国家重点基础研究发展计划(973计划)“南海深水区复杂地质结构地震采集基础理论研究2009CB219403” |
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| 摘 要： | 面波频谱分析法(SASW)作为一种横向分辨率较高的瑞雷面波勘探方法,由于计算得到的基阶面波频散曲线存在较大误差以及无法获得高阶模式频散曲线而在应用中受到限制.通过应用Fourier变换方法(FT法)分离提取面波各模态数据,进而对分离后的各模态数据利用SASW法计算频散曲线.通过模型实例分析得出:(1)利用SASW计算基阶面波频散曲线时必须分离得到基阶面波数据,然后计算才能得到正确的结果;(2)基于多模态分离的SASW法可以计算得到面波高阶模式的频散曲线.
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| 关 键 词： | 瑞雷面波 Fourier变换 SASW法 高阶模式 地震勘探 |
Spectrum Analysis of Surface Wave Method Based on Multi-Mode Separation |
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| ZHANG Da-zhou,GU Han-ming,XIONG Zhang-qiang,XIAO Jin-hong.Spectrum Analysis of Surface Wave Method Based on Multi-Mode Separation[J].Earth Science-Journal of China University of Geosciences,2009(6). |
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| Authors: | ZHANG Da-zhou GU Han-ming XIONG Zhang-qiang XIAO Jin-hong |
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| Institution: | ZHANG Da-zhou1,2,GU Han-ming1,XIONG Zhang-qiang3,XIAO Jin-hong41.Institute of Geophysics and Geomatics,China University of Geosciences,Wuhan430074,China2.Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education,China3.School of Info-Physics and Geomatics Engineering,Central South University,Changsha410083,China4.College of Information Science and Engineering,China |
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| 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 b... |
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| Keywords: | Rayleigh wave Fourier transform SASW method higher mode seismic prospecting |
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