新疆南部构造区带与地震活动状态研究  

RESEARCH ON THE STRUCTURAL BELTS AND EARTHQUAKE ACTIVITY STATE IN THE SOUTH PART OF XINJIANG

作　　者：曲延军[1] 王琼[1] 聂晓红[1] 

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011

出　　处：《内陆地震》2010年第4期298-306,共9页Inland Earthquake

基　　金：地震行业科研专项中国大陆地震活动状态动态评价系统研制(200708020)资助

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、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、b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。Taking the earthquake activity as main line,according to the geological formation movement,crustal shortening rate,fault activity,local stress field and historical strong earthquake activity characteristics,the south part of Xinjiang is divided into the eastern part of south Tianshan mountain earthquake belt,Keping block,the Kashi and Wuqia intersection zone and west Kunlun mountain earthquake belt.Using the earthquake catalog in Xinjiang since 1900,on the basis of earthquake records integrity analysis of different intensity,the earthquake activity state in different structural belts is analyzed quantificationally through calculating the mean value of annual strain energy release,annual rate of earthquakes in different magnitude low limit,b value and strain energy accelerative releasing model parameters m value,and then extract the characteristic index of earthquake activity state in different structural belts,which provide quantitative basis for earthquake tendency analysis and judgment.

关 键 词：新疆南部 构造区带 地震活动状态 

分 类 号：P315.5[天文地球—地震学]