反演含有低速带的上地幔速度结构的一个公式
AN INVERSION FORMULA FOR A MANTLE STRUCTURE WITH LOW VELOCITY ZONE
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摘要: 本文在Gerver和Markushevich以及McMechan对Herglotz-Wiechert-Bateman公式作推广的基础上,提出了一个反演含有低速带的上地幔速度结构的简明公式。虽然它只是无数低速带速度模型中的一个,但它给整个上地幔速度结构的反演计算带来方便。作为一个算例,作者计算了北京——台湾地区剖面的上地幔顶部速度结构。Abstract: In this paper, a concise formula for a mantle structure with low velocity zone is presented, based on the works of Gerver and Markushevich, and McMechan. Although it is merely one of a large number of possible solutions, it is convenient for inverting the travel time data of the upper mantle when the information from LVZ is limited. The velocity structure of the upper-most mantle of the Beijing-Taiwan profile is given as an example.
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[1] HergIotz, G., fiber das Benndorfsche Problem der Fortpflanzungsgeschwindigkeit der Erdbensttahlen, Ph ys. Zeit.145——147, 1907
[2] Gerver, M. and V. Matkushevich, Determination of a seismic wave velocity from the travel——timecurve, Geophys. J., 11, 165——173, 1966.
[3] 赵珠,华北地区上地慢速度结构的初步研究,地球物理学报,26,341——354,1983,
[4] McMechan, G. A., Low——velocity zone parameters as functions of focal depth, Geophys, J., 51,217——228, 1977.
[5] McMechan, G. A., Low——velocity zone inversion by the Wiechert——Herglotz integral, Bull. Seism. Soc.Amen, 69, 379——385, 1979[1] HergIotz, G., fiber das Benndorfsche Problem der Fortpflanzungsgeschwindigkeit der Erdbensttahlen, Ph ys. Zeit.145——147, 1907
[2] Gerver, M. and V. Matkushevich, Determination of a seismic wave velocity from the travel——timecurve, Geophys. J., 11, 165——173, 1966.
[3] 赵珠,华北地区上地慢速度结构的初步研究,地球物理学报,26,341——354,1983,
[4] McMechan, G. A., Low——velocity zone parameters as functions of focal depth, Geophys, J., 51,217——228, 1977.
[5] McMechan, G. A., Low——velocity zone inversion by the Wiechert——Herglotz integral, Bull. Seism. Soc.Amen, 69, 379——385, 1979
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