摘要
利用双差地震定位方法对西南天山地区24个台站记录到的864个地震的P波绝对到时数据和相对到时数据进行了地震重新定位,并给出了522个地震的震源参数.重定位后的地震定位精度均有了显著提高.重新定位后,本研究区域内地震活动密集成东西向与北西向线性排列分布,与已知活动断裂呈更加清晰的联系.
We presented the relocated hypocenter parameters for 522 events of 864 earthquakes which occurred in the southwest Tienshan region. The double-difference （DD） relocating method was utilized to produce the pronounced relative event locations through adopting both the absolute and relative P-wave arrival times. The resolution of the relocated earthquake hypocenters was significantly increased. After the relocation, those formerly randomly-distributed earthquakes were clustered and aligned tending to the east-west and north-west directions. The revised hypocenter locations showed some relations with the known major active faults.
出处
《中国科学院研究生院学报》
CAS
CSCD
北大核心
2010年第3期350-355,共6页
Journal of the Graduate School of the Chinese Academy of Sciences
基金
国家自然科学基金(40774049
40404002和40774044)资助
关键词
双差地震定位法
地震重定位
西南天山地区
地震活动性
震源深度
double-difference relocation method
hypocenter relocation
southwest Tienshan
seismic activity
focal depth
