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根据我国各区域地震台网现有的观测条件,本文提出一种利用短周期地震记录图上比较准确量得—的时间差进行震中定位和测定震源深度的计算机实用方法,同时给出了这些地震参数的误差估计。文章以长江三峡地震台网定位为例得到震中平均误差约7km,震源深度平均误差约5km。本文所述方法适用于目前我国区域地震台网的地震定位工作,有利于开展小区域地震三维空间分布及其他地震科学研究。
According to the existing observational conditions of the seismological stations in China, this paper presents a computer-based method for the epicenter location and determination of the depth of the focal point by using the time difference of the relatively accurate magnitude of the short-period seismogram, Error Estimation of Seismic Parameters. Taking the positioning of the Three Gorges Seismic Network as an example, the average error of the epicenter is about 7 km and the average depth of the source depth is about 5 km. The method described in this paper is suitable for the seismic locating work of regional seismographs in our country at present, which is conducive to the three-dimensional spatial distribution of earthquakes in small area and other seismic science research.