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本文根据由P波频谱及合成地震图等方法研究鲜水河断裂带9次中强地震(含强余震)破裂过程时得到的震源参数,采用最小二乘法求出该带上震级与地震矩等几个主要参数的线性回归关系式。据此,分别计算了鲜水河断裂带及其各段的地震平均滑动速率和地震矩发生速率,进而推求了各段及总带上的地震重复周期,并结合该带错动势累积的程度对地震危险性做了粗略的估计。
Based on the P-wave spectrum and synthetic seismograms, the source parameters of the moderate-strong earthquakes (including strong aftershocks) in the Xianshuihe fault zone were studied. The least squares method was used to find the magnitude and moment of the belt Several main parameters of the linear regression relationship. Accordingly, the average earthquake sliding velocities and seismic moment occurrence rates of the Xianshuihe fault zone and its various segments are respectively calculated, and then the seismic repetition cycles of each segment and the total belt are deduced. Combined with the cumulative degree of the fault moving trend, A rough estimate of the seismic hazard is made.