大同—阳高地震现场震级计算方法

ON-THE-SPOT MAGNITUDE COMPUTING METHOD OF DATONG-YANGGAO EARTHQUAKE

本文着重论述在大同—阳高地震现场工作中用限幅时间测定震级的方法及对此方法的数据对比检验。通过在大同地震现场实际应用后认为:此方法能够较好地解决用振动持续时间无法解决的多个限幅地震波形叠加的震级测定问题。对于只有微震仪的单台(或多台)测定较密集的较强地震序列震级是一种快速方便、实用的方法。对于扩大微震仪的震级量程具有实际意义。

This paper mainly discussed the magnitude determination method using the limited amplitude time at the sue of Datong-Yanggao earthquake as well as compared and tested the data of this method. After the practical application of this method at the site of Datong earthquake, it is thought that this method can solve the magnitude determination problem of multiple limited amplitude seismic waveform superposition which can not be settled by vibration duration time. This is a fast, convenient and practical method for single station with only microseismographes to determine the magnitudes of stronger seismic sequence. The method is of practical significan-ce for enlarging the magnitude measurement range of the microseismographs.