地震学报（英文版）2003，Vol.16Issue(6)：616-623,8.
Inversion of receiver function by wavelet transformation
Inversion of receiver function by wavelet transformation
摘要
Abstract
A new method for receiver function inversion by wavelet transformation is presented in this paper. Receiver func-tion is expanded to different scales with different resolution by wavelet transformation. After an initial model be-ing taken, a generalized least-squares inversion procedure is gradually carried out for receiver function from low tohigh scale, with the inversion result for low order receiver function as the initial model for high order. Aneighborhood containing the global minimum is firstly searched from low scale receiver function, and will gradu-ally focus at the global minimum by introducing high scale information of receiver function. With the gradual ad-dition of high wave-number to smooth background velocity structure, wavelet transformation can keep the inver-sion result converge to the global minimum, reduce to certain extent the dependence of inversion result on theinitial model, overcome the nonuniqueness of generalized least-squares inversion, and obtain reliable crustal andupper mantle velocity with high resolution.关键词
receiver function/wavelet transformation/waveform inversionKey words
receiver function/wavelet transformation/waveform inversion分类
天文与地球科学引用本文复制引用
吴庆举,田小波,张乃铃,李桂银,曾融生..Inversion of receiver function by wavelet transformation[J].地震学报（英文版）,2003,16(6):616-623,8.基金项目
National Nature Science Foundation of China (49974021). （49974021）
