乌鲁木齐及周边地区潜在震源区的确定  

DETERMINATION OF POTENTIAL SEISMIC SOURCE IN URUMQI REGION AND ITS PERIPHERY

作　　者：唐丽华[1] 沈军[1] 刘志坚[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1期8-12,共5页Inland Earthquake

基　　金：乌鲁木齐城市活断层探测与地震危险性评价项目;国家支撑项目:强震危险区划分关键技术研究子专题(2006BAC13B01-0102)资助

摘　　要：根据"乌鲁木齐市活断层探测与地震危险性评价"项目的成果,确定了乌鲁木齐及周边地区的发震构造模型。在此基础上,结合地震活动特征,根据地震重复及构造类比原则对乌鲁木齐市周围的潜在震源区进行了重新划分。由此,采用地震危险性概率分析方法计算乌鲁木齐市及周围县市的基岩峰值加速度,并进行地震动峰值加速度复核。由复核结果可以看出,此潜在震源区划分方案对乌鲁木齐市的影响不大,但对阜康市的影响较大,使该市地震动峰值加速度由原来的0.15g变化为0.20g。Based on the re ults of the project Detection and Research of Active Faults in Urumqi, the seismogenic tectonic model is proposed. Then potential seismic sources in Urumqi and its periphery are determined combining the models and seismicity characteristics. Bedrock peak ground accelerations of Urumqi and its periphery are calculated by the seismic hazard probability analysis method on the basis of the seismic source zonation. Comparing with the former research, this source zonation has little influence on Urumqi city but much more on Fukang city according to the results of checking of peak ground accelerations.

关 键 词：乌鲁木齐 潜在震源区 地震加速度 

分 类 号：P315.9[天文地球—地震学]