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本文叙述了在走时表已知的情况下,根据单一或几种震相确定地震参数的一般方法.我们把问题归结为求某个准则函数的极小值,并提出在计算机上用一种有效的直接搜索法——鲍威尔(Powell)搜索法求解.使用该方法对迭代的初值的要求可以比较低,一般只要选到时最小的台站的位置作为初始起点.对来自单一震相,二种震相或不明震相的初动的到时数据的参数测定问题作了详细的说明,并列出了几个数值结果.本文还大致说明了在几个台网记录到的100多个地方震和近震的计算情况.
This paper describes a general method for determining seismic parameters based on single or several phases in a known travel timetable. We attribute the problem to finding the minimum for a criterion function and propose a computationally efficient Of the direct search method - Powell (Powell) search method using the method of iterative initial value of the request can be relatively low, usually only the location of the smallest station selected as the initial starting point for a single from the phase, The problem of the parameter determination of the first arrival data of a seismological or unknown phase is explained in detail and several numerical results are listed. Earthquake and near earthquakes calculations.