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根据文献[1]的方法,利用1965年到1984年1月的70次邢台地震序列,按公式: m=1/blog(1+b·Nln10)+M1-1/(2b)log(1+b·ln10)进行回顾性地计算该序列的主震或最大余震的震级,得到了较好的结果。同时应指出,当ho>1.0时可以得出确切的震级值,当ho<1.0时得不到确切的震级值。要判断出该序列未来是否还有更大的地震,本文采用了过滤图解的方法来判断该序列是属于前震群还是余震群,收到了一定的成效。
According to the method in [1], using the 70 Xingtai earthquake sequences from 1965 to January 1984, the formula is as follows: m = 1 / blog (1 + b · Nln10) + M1-1 / (2b) log b · ln10) to retrospectively calculate the magnitude of the main shock or the largest aftershock of the series, and obtain good results. At the same time, it should be pointed out that the exact magnitude value can be obtained when ho> 1.0, and the exact magnitude value can not be obtained when ho <1.0. To determine whether there is a larger earthquake in the future, this paper uses a filtered graph to determine whether the sequence belongs to a pre-earthquake or aftershock cluster and receives some results.