粒子群算法在主震断层面参数估计中的应用
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摘要
提出了利用粒子群全局优化算法,由余震震源参数确定主震断层面的方法,从而克服了常见的Gauss-New-ton法对初值的敏感性。同时,讨论了l1和l2范数准则对参数估计的影响。将该方法用于2003年7月21日云南大姚6.2级地震断层面参数估计,取得了较好的结果。
A new method to determine the fault plane of mainshock by using Particle Swarm Global Optimization Algorithms was proposed,which overcomes the sensitivity of Gauss-Newton Method to initial value.The effect of l1-and l2-criteria on parameter estimation was also discussed.This method was used to evaluate the fault plane parameters of the Dayao,Yunnan,earthquake on July 21,2003,and the results show that the method is valid.
引文
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