共查询到20条相似文献,搜索用时 15 毫秒
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C. Ravaut S. Operto L. Improta J. Virieux A. Herrero P. Dell'Aversana 《Geophysical Journal International》2004,159(3):1032-1056
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Summary . Born inverse methods give accurate and stable results when the source wavelet is impulsive. However, in many practical applications (reflection seismology) an impulsive source cannot be realized and the inversion needs to be generalized to include an arbitrary source function. In this paper, we present a Born solution to the seismic inverse problem which can accommodate an arbitrary source function and give accurate and stable results. It is shown that the form of the generalized inversion algorithm reduces to a Wiener shaping ***filter, which is solved efficiently using a Levinson recursion algorithm. Numerical examples of synthetic and real field data illustrate the validity of our method. 相似文献
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Two efficient algorithms for iterative linearized inversion of seismic waveform data 总被引:1,自引:0,他引:1
We present two equivalent algorithms for iterative linearized waveform inversion for 3-D Earth structure with respect to an arbitrary 3-D starting model; one is a matrix formulation, and the second is a wavefield formulation. Both algorithms require the computation of accurate synthetic seismograms, but neither requires that any particular method be used to compute the synthetics. The matrix formulation is equivalent to our previously published algorithm (Hara, Tsuboi & Geller 1991), but requires less than 10 per cent of the CPU time of the previous algorithm. The wavefield algorithm is equivalent to that of Tarantola (1986) and Mora (1987), but appears to be substantially more efficient. 相似文献
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Seismic traveltime inversion for 2-D crustal velocity structure 总被引:51,自引:0,他引:51
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Two-dimensional asymptotic iterative elastic inversion 总被引:3,自引:0,他引:3
Side Jin Raul Madariaga Jean Virieux Gilles Lambaré 《Geophysical Journal International》1992,108(2):575-588
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Iterative seismic inversion 总被引:4,自引:0,他引:4
Stephen J. Norton 《Geophysical Journal International》1988,94(3):457-468