2008年乌恰6.9级地震与新疆地震趋势研究  

WUQIA EARTHQUAKE WITH M_S6.9 IN 2008 AND STUDY OF EARTHQUAKE TENDENCY IN XINJIANG

作　　者：高国英[1] 龙海英[1] 聂晓红[1] 郭卫英[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》2009年第1期1-9,共9页Inland Earthquake

基　　金：地震科学联合基金(A08059)资助

摘　　要：新疆在连续3年没有发生6级以上地震的背景下,2008年分别发生3月21日于田7.3级、10月5日乌恰6.9级以及2次5级地震。为了正确把握未来几年新疆地震活动状态和震情发展趋势,针对新疆境内6.7级以上强震活动的非均一性和新疆地震成组性活动特征进行了探讨分析,结合乌恰6.9级地震较深入分析了乌恰及周围地区地震活动的层次性特征。研究结果表明,乌恰6.9级地震发生后的未来几年新疆大区域范围处于7级左右地震的相对平静时段,未来2年或3年新疆仍处在6级地震成组活跃时段中,乌恰6.9级地震的发生预示着乌恰及周围地区将进入新一轮的中强震活跃时段。There were no earthquakes with Ms≥6.0 in recent three years, then Yutian Ms7.3 earthquake on Mar.21, Wuqia M56.9 earthquake on Oct.5 and two Ms≥5. 0 earthquakes occurred in 2008 respectively. In order to grasp the seismicity state in the years to come in Xinjiang, in connection with the unhomogeneity of Ms≥6.7 strong earthquakes activity and grouping activity characteristics of earthquakes in Xinjiang, combined with Wuqia M6. 9 earthquake, the hierarchical characteristics of earthquakes activity in Wuqia and its surroundings was analyzed in detail. The results show there will be a relatively calm period of Ms7.0 earthquake in the years to come and grouping activity period of Ms6.0 in 2 or 3 years in Xinjiang; the occurring of Wuqia Ms6.9 earthquake fore- shows there will be a new active period of moderate and strong earthquakes in Wuqia and its surroundings.

关 键 词：非均一性 强震成组活动 乌恰及周围地区 层次性特征 

分 类 号：P315.75[天文地球—地震学]