九江-瑞昌5.7级地震余震尾波Qc值分析  

ANALYSIS OF Qc VALUE OF CODA WAVES ABOUT AFTERSHOCKS OF JIUJIANG-RUICHANG Ms5.7 EARTHQUAKE

作　　者：陈俊华[1] 甘家思[2] 

机构地区：[1]中国科学技术大学地球与空间科学学院,合肥230026 [2]中国地震局地震研究所,武汉430071

出　　处：《大地测量与地球动力学》2006年第3期65-68,共4页Journal of Geodesy and Geodynamics

基　　金：中国科技部社会公益研究专项(2004DIB3J131);长江三峡工程开发项目

摘　　要：对江西九江瑞昌5.7级地震(2005年11月26日)的余震尾波Qc值作了分析,发现Qc值偏低,在64.1±21.5范围内波动,与震级基本不相关。这表明从该主震震中到流动台站所决定的衰减椭圆区域与北东向的瑞昌发震断裂带关系密切,推测其能量大释放已经基本完成,目前该震源体内正处于应力调整阶段。The Qc value of the afiershock＇ s coda waves of Ms5.7 earthquake in Jiujiang-Ruichang, Jiangxi province recorded by single station are analyzed. The results show that the Qc values are too lower（64.1 ±21.5 ） and have little correlation with the magnitude. The attenuation ellipse area between the mobile station and the epicenter of main earthquake is related closely with the NE trending Ruichang seismogenic fault zone. The energy erupt perhaps have already ended, and the seismic source area is in the stress adjustment process, now.

关 键 词：余震尾波 QC值 单台 北东向断裂带 应力调整 

分 类 号：P315.63[天文地球—地震学]