新疆数字测震台网“九五”与“十五”运行期间震源深度对比分析  

Comparative analysis of focal depth during “the ninth-five year plan” and “the tenth-five year plan” period of Xinjiang Digital Seismic Network

作　　者：孔祥艳[1] 陈向军[1] 赵石柱[1] 姜圆[1] 

机构地区：[1]新疆维吾尔自治区地震局,中国乌鲁木齐830011

出　　处：《地震地磁观测与研究》2016年第2期67-71,共5页Seismological and Geomagnetic Observation and Research

基　　金：新疆地震科学基金(201406)和新疆地震科学基金(201506)联合资助

摘　　要：根据新疆测震台网地震目录,对新疆地区2001年1月到2015年9月MS 2.0以上地震,分"九五"和"十五"两阶段进行震源深度统计分析,结果表明:平均震源深度和震源深度集中范围差别较大,与不同阶段定位方法及走时表的选择不同有关;震源深度50 km以下地震,空间分布基本一致,无集中区,而震源深度50 km以上地震存在集中区;"十五"以来浅源地震的震源深度不可靠,使用时需重新定位。Based on the earthquake catalogue of Xinjiang Seismic Network, the comparison analysis on focal depth of theMS≥2.0 earthquake during “the ninth-ifve year plan” and “the tenth-ifve year plan” period from January, 2001 to September, 2015 in Xinjiang is given. The results showed that： The difference of average focal depths and concentration range of focal depths are all very large. This is because different period have different positioning method and travel-time table. For the earthquakes whose focal depth below 50 km, space distribution is basically the same, and no cluster, but they have cluster for the earthquakes whose focal depth greater than 50 km. Focal depth of shallow earthquakes after “the tenth ifve-year plan” are not reliable. If they are used, it should be repositioned.

关 键 词：新疆测震台网 震源深度 “九五”期间 “十五”以来 

分 类 号：P315.33[天文地球—地震学]