【摘要】 采用多台多地震联合反演的方法得到了新疆南天山西段2012年6月至2013年10月各台站中小地震的震源谱,进而计算149次ML≥2.0地震的应力降、地震矩、震源破裂半径、拐角频率等震源参数,并分析南天山西段地区震源参数形态特征。结果表明,南天山西段地区震级与地震矩(M0)、矩震级(MW)、震源尺度(R)之间表现为正相关,与地震的拐角频率之间成负相关。地震矩(M0)随着震源破裂尺度逐渐变大,成正相关的一次函数关系。初步分析后认为,震级在ML2.5~3.6范围内的地震更适合于研究南天山西段地区有关应力降特征的跟踪和研究。更多还原

【Abstract】 This paper using multi seismic joint inversion method to calculate focal spectrum from June,2012 to October,2013 and stress drop,source parameters of 149 earthquakes with ML≥2 in order to analyze characteristics of source parameters. The results showed there was positive correlation between magnitude,seismic moment( M0),moment magnitude( MW) and focal size( R) while negative correlation with seismic corner frequency. The seismic moment( M0) and source rupture scale became positive correlation function. In addition the author considers that earthquakes with2. 5-3. 6 were more suitable for research on characteristics of stress drop in western section of southern Tianshan.更多还原