山西长治测震台网速报地震震级误差初探

选取山西长治数字测震台网2006年10月至2009年12月记录到的301个ML≥2.0地震,对其震级等参数进行了重新计算、整理和统计分析,并与山西省测震台网所给出的震级参数进行了回归分析和曲线拟合,得到长治台网平均震级与省台网震级的线性和非线性回归公式、相关系数和均方根误差等。为震级测定提供参考,以减小速报地震震级误差。

Preliminary Study on Magnitude Error of Fast Earthquake Reporting by Changzhi Seismic Network, Shanxi

The magnitudes are recalculated and statistically analyzed based on 301 selected ML≥2.0 earthquakes recorded by Changzhi Digital Seismic Network,Shanxi from October,2006 to December,2009 in this paper.In addition,regression analysis and data fitting,jointed with magnitudes given by the Seismic Network of Shanxi Province,are carried out.The linear and nonlinear regression function,correlation coefficient and root mean square error of average magnitudes obtained from Changzhi network and magnitude from provincial network are achieved.This result can be taken as a reference in earthquake magnitude determining to decrease magnitude error in fast earthquake reporting.