郯庐断裂带南段及邻区中小地震地震波衰减特征研究

摘要

利用安徽省测震台网记录的波形资料,采用单震多台拟合方法计算了郯庐断裂带南段及邻区中小地震地震波的振幅衰减系数K值和卓越频率衰减系数α值,分析研究K值和α值的时空变化特征,并讨论与华东地区中强震之间的对应关系及与QC值的相关性.研究结果对中长期地震预报和震后趋势判断有一定的现实意义.%Based on earthquake data recorded in Anhi seismic network, the K-value of amplitude attenuation coefficient and the a-value of predominant frequency of seismic wave of mid-small earthquakes in southern segment of Tanlu fault zone and its adjacent areas were calculated with the use of single earthquake multiple fitting calculating method. In addition, the space-time variety characteristics of K -value and a -value was researched, and the relationship with moderate earthquakes in East China and the value of Qc were discussed. The findings of this paper may have a practical significant on the medium and long term earthquake prediction and post-earthquake trend judgment.