【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。更多还原

【Abstract】 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.更多还原