【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。更多还原

【Abstract】 The Qc value of the aftershock’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.更多还原