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文章基于用计算机求解近震时空参数的优选速度法,提出了采用逐步逼近的方法求取本地区等效速度公式,进而求得近震时空参数的方法。应用该方法,根据龙南 M_S=5.0及 M_S=3.7级两次地震的各台到时,进行了实例计算,求得了这两次地震的震源时空参数。计算结果表明:该方法收敛很快。文章最后通过对各参数的误差分析,提出了提高观测精度的措施。
Based on the optimal velocity method for solving the near-space time-space parameters by computer, this paper proposes a method of obtaining the equivalent velocity formula in this area and then obtaining the near-space time-space parameters by using the method of stepwise approximation. According to this method, an example calculation is made based on the arrival of each station of M_S = 5.0 and M_S = 3.7 in Longnan, and the space-time parameters of these two earthquakes are calculated. The calculation results show that the method converges quickly. At the end of the article, through the error analysis of each parameter, the measures to improve the observation accuracy are put forward.