Parametric inversion of viscoelastic media from VSP data using a genetic algorithm
Parametric inversion of viscoelastic media from VSP data using a genetic algorithm
复制标题
使用遗传算法根据 VSP 数据对粘弹性介质进行参数反演
DOI:
10.1007/s11770-007-0025-8
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发表时间:
2007-08
影响因子:
0.7
通讯作者:
中科院分区:
文献类型:
--
作者:
Viscoelastic parameters are becoming more important and their inversion algorithms are studied by many researchers. Genetic algorithms are random, self-adaptive, robust, and heuristic with global search and convergence abilities. Based on the direct VSP wave equation, a genetic algorithm (GA) is introduced to determine the viscoelastic parameters. First, the direct wave equation in frequency is expressed as a function of complex velocity and then the complex velocities estimated by GA inversion. Since the phase velocity and Q-factor both are functions of complex velocity, their values can be computed easily. However, there are so many complex velocities that it is difficult to invert them directly. They can be rewritten as a function ofc0andc∞to reduce the number of parameters during the inversion process. Finally, a theoretical model experiment proves that our algorithm is exact and effective.
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DOI:
--
发表时间:
2006
期刊:
Chinese journal of rock mechanics and engineering
影响因子:
--
作者:
Sun Weiming
通讯作者:
Sun Weiming
影响因子:
2.6
作者:
B. Ursin;B. Arntsen
通讯作者:
B. Ursin;B. Arntsen
影响因子:
7.5
作者:
Yang Hui-zhu
通讯作者:
Yang Hui-zhu
影响因子:
3.3
作者:
L. Amundsen;R. Mittet
通讯作者:
L. Amundsen;R. Mittet