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| A Fast Iterative Algorithm for Solving Elastic Waveform Inversion |
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| DOI：10.7511/jslx19933047 |
| KeyWord:elastic waveform inversion , finite element method, mode decomposition method, fast iterative algorithm |
| Zhang Jianfeng |
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| Abstract: |
| In this paper the numerical solution on elastic waveform inversion is studied and a fast iterative algorithm is achieved by minimizing residuals of low-frequency responses and calculating low-frequency responses of elastic wave propagation with finite element method and mode decomposition method ,forwhich the constrains on parameters of the inverse problem can be introduced and the computation is efficient with good convergence. Generally only approximate solutions of the inverse problem can be obtained with the algorithm present here,but its solution can be taken as well initial background values of other elastic waveform inversion solution methods. |
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