摘要
<正>0引言弹性波场的复杂性使得反演问题非线性增强,容易陷入局部极值,需要采用合适的多尺度反演策略降低非线性。多尺度反演方法在降低反演问题非线性的同时,会使得计算成本增大,需要通过优化算法实现高效的多尺度反演。1方法原理对频率域弹性波方程离散化可整理为如下矩阵形式(公式1):
引文
1 Brossier R,Operto S,Virieux J.2009.Seismic imaging of complex onshore structures by 2D elastic frequency-domain full-waveform inversion[J].Geophysics,74(6):WCC105-WCC118.
2 Pratt G,Shin C.1998.Gauss-Newton and full Newton methods in frequency-space seismic waveform inversion[J].Geophysical Journal International,133(2):341-362.
3 Virieux J,Operto S.2009.An overview of full-waveform inversion in exploration geophysics[J].Geophysics,74(6):WCC1-WCC26.