天山各构造分区地震破裂方式和地震序列类型的研究  

Earthquake Rupture Modes and Sequence Types in the Tianshan Tectonic Division

作　　者：殷娜[1] 李莹甄[1] 张博[2] 

机构地区：[1]防灾科技学院,三河065201 [2]中国地震局地球物理研究所,北京100081

出　　处：《震灾防御技术》2016年第1期22-34,共13页Technology for Earthquake Disaster Prevention

基　　金：中央高校基本科研业务费专项基金(ZY20140201);新疆维吾尔自治区自然科学基金课题(2011211A105);科技部国际合作专项(2012DFR20440K02)联合资助

摘　　要：天山作为全球新构造运动和地震活动最为强烈的板内造山带,一直是中外地震学家密切关注的区域之一。本文从天山地区应力场及构造运动特征入手,对天山不同构造分区地震的破裂和地震序列类型分布特征进行研究,结果显示对于天山全区而言,地震破裂类型主要为逆断-走滑型,地震序列类型以主-余型为主,同时试图通过强震发震构造力学性质和地震学参数等方面的对比,揭示构造带内部差异性运动对强震孕育发生的影响,以期为天山地区地震活动性研究与地震预测提供基础性研究支持。Tianshan Mountains, as the great neo-tectonic movement and intensive seismic activity in intraplate orogenic belt, has been paid close attention by the foreign and chinese seismologists. From the point of view from stress field and tectonic movement in the Tianshan area, we studied the characteristics of earthquake rupture modes and sequence types in the Tianshan tectonic division. The results show that for the whole area of the Tianshan Mountains, the rupture is dominant by thrust and strike slip, and the sequence is characterized by mainshock and aftershock. Through the comparison of earthquake to seismo-genetic structure and mechanical properties of seismological parameters, we try to reveal the influence of tectonic belt internal differences on occurrence of strong earthquake motion. Our results are significant to provide basic research support for prediction research and earthquake activity in the Tianshan area.

关 键 词：震源机制 地震序列 天山 构造带 

分 类 号：P315[天文地球—地震学]