【摘要】 通过分析2009年1月~2012年12月南天山西段12个台站地震波形资料,最终选取5个台站资料,利用P波初动解计算方法,分别求解该时段不同台站单年和多年中小震综合震源机制解。结合前人工作,研究南天山西段构造应力场的总体特征,以及主压应力轴、主张应力轴方向的变化,结果显示该区域构造应力场方向大致为NW向。更多还原

【Abstract】 According to data of 12 stations in western part of southern Tianshan from 2009 to 2012,they used initial P wave polarity method to calculate focal mechanism solutions. They also studied characteristics of tectonic stress field,direction of principal compressive stress axis and tensile stress axis in southern Tianshan,the results indicated direction of tectonic stress field in southern Tianshan was approximately NW.更多还原