大庆林甸县M5.1地震序列尾波Q_c值特征研究  

Reserch of Q_c value of codawaves characteristics about M5.1 earthquake sequences of Daqing Lindian

作　　者：刘长生[1,2] 魏晓红 

机构地区：[1]中国科学技术大学,中国合肥230026 [2]黑龙江省地震局,中国哈尔滨150090 [3]大庆市地震台,中国黑龙江163414

出　　处：《地震地磁观测与研究》2015年第1期15-20,共6页Seismological and Geomagnetic Observation and Research

基　　金：黑龙江省地震局一般性课题(201402)

摘　　要：基于Sato单次散射模型,利用黑龙江省大庆数字化测震台网近场数字地震波形记录资料,分析计算2005年7月25日大庆林甸M5.1地震后地壳介质的尾波Qc值变化,拟合Qc值与频率之间的依赖关系,为Qc=36.58±8.67f(0.9787±0.0837)。对大庆地区2005年7月至2006年2月的余震序列尾波Qc值变化特征进行分析,结果表明,主震后该序列尾波Qc值发生显著变化。Based on Sato single scattering model, using of near field digital seismic waveform data recorded by Daqing on July 25, 2005, we calculated and got the result of the variation of crustal medium coda value after Lindian M5.1 level, fitting the dependency relationship between Daqing Lindian earthquake sequence of coda wave value and frequency for Qc = 36.58±8.67 f^（0.9787±0.0837）.We analyzed the variation characteristics of the earthquake aftershock sequence coda value of Daqing area in 2005 July to 2006 february months. The results show that, after the main shock,the sequence of coda wave Qc value changed significantly.

关 键 词：SATO模型 尾波流逝时间 地震序列 尾波QC值 

分 类 号：P315.31[天文地球—地震学]