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新疆南部构造区带与地震活动状态研究
曲延军,王琼,聂晓红
Author NameAffiliation
Qu Yanjun Earthquake Administration of Xinjiang Uygur Autonomous Region Urumqi 830011China 
Wang Qiong Earthquake Administration of Xinjiang Uygur Autonomous Region Urumqi 830011China 
Nie Xiaohong Earthquake Administration of Xinjiang Uygur Autonomous Region Urumqi 830011China 
摘要:
以地震活动为主线并依据新疆地质构造运动、地壳缩短速率、断裂活动、局部应力场及历史强地震活动特征等的研究,将新疆南部地区初步划分为南天山东段地震带、柯坪块体、喀什—乌恰交汇区及西昆仑地震带4个地震构造区带。利用新疆1900年以来的地震记录,在不同强度地震记录完整性分析的基础上,通过计算上述各构造区带年应变能释放均值、折合震级、不同震级下限的地震年发生率、值和应变加速释放模型参数m值等参数,对各构造区带中地震活动状态进行了定量分析,进而提取了各构造区带地震活动状态的特征指标,为地震趋势分析和判定提供了定量的依据。
关键词:  新疆南部  构造区带  地震活动状态
DOI:
分类号:
基金项目:
Research on the Seismotectonic Zones and Seismicity State in the Southern Xinjiang Region
Qu Yanjun,Wang Qiong,Nie Xiaohong
Abstract:
Based on the studies of earthquake activity,tectonic movement,crustal shortening rate, fault activity,local stress field and historical characteristics of strong earthquake activities in Xinjiang,we divide the south part of Xinjiang into 4 seismotectonic zones,namely,the eastern segment of south Tianshan seismic belt,the Kalpin block,the Kashi-Wuqia junction zone,and the west Kunlun Mountains seismic belt. Using earthquake catalogues from Xinjiang since 1900,and on the basis of integrity analysis of earthquake records in different magnitude ranges, the seismicity state of different seismotectonic zones is analyzed quantificationally by calculating the mean value of annual strain energy release, annual rate of earthquakes with different lower limits of magnitude,b-value,and the parameter m of accelerating strain release model. The characteristic indexes of seismicity state for each of the seismic tectonic zones are then determined,which provide a quantitative basis for earthquake tendency analysis and judgment.
Key words:  Southern Xinjiang  Seismotectonic zone  Seismicity state