Measurement of interstation phase velocity by wavelet transformation
Measurement of interstation phase velocity by wavelet transformation
复制标题
小波变换测量站间相速度
DOI:
10.1007/s11589-009-0425-3
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发表时间:
2009-08
期刊:
影响因子:
--
通讯作者:
Qingju Wu
中科院分区:
文献类型:
--
作者:
Jiatie Pan;Fengxue Zhang;Guangcheng Zhang;Xiufen Zheng;Qingju Wu
In this paper, we present wavelet transformation method to measure interstation phase velocity. We use Morlet wavelet function as mother wavelet to filter two seismograms at various period of interest, and correlate the wavelet filtered seismograms to form cross-correlogram. If both wavelet filtered signals are in phase at that period, the phase of the cross-correlogram is a minimum. Using 3-spline interpolation to transform cross-correlation matrix to a phase velocity verse period image, it is convenient for us to measure interstation phase velocity.
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DOI:
10.1029/rg016i001p00001
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