| 大同震区地震序列震源位置及震源区速度结构初探 |
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| 引用本文： | 靳玉科,梁向军,靳玉贞,宋美琴,王焱,张玲.大同震区地震序列震源位置及震源区速度结构初探[J].山西地震,2010(3):1-6. |
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| 作者姓名： | 靳玉科 梁向军 靳玉贞 宋美琴 王焱 张玲 |
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| 作者单位： | 山西省地震局代县中心地震台;太原大陆裂谷动力学国家野外科学观测研究站;山西省地震局;山西省地震局太原基准地震台;山西省地震局大同中心地震台; |
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| 基金项目： | 中国地震局地震科研监测预报合同制项目(三结合) |
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| 摘 要： | 采用震源位置和速度结构联合反演的方法对大同震区1989年6.1级、1991年5.8级、1999年5.6级3次地震地震序列进行了震源位置和震源区速度结构反演,以确定3次地震序列的分布和震源区的速度结构。结果表明：3次地震序列的发震断裂为NNE向的大王村断裂和NWW向的团堡断裂,两条断裂表现为交替发震;3次地震序列的震源深度平均为10.06 km,其中以6~15 km为发震优势层;研究区速度结构与大的地貌特征相符,沿大同盆地第四纪沉积层表现的不间断低速带,从大同县一直延伸到阳高、天镇等地。在中部山自皂台附近出现了一高速区位置与大同火山群分布区相近。大同—阳高3次地震序列分布在相对高速区上,表明这一区域为应力集中地区。
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| 关 键 词： | 地震定位 地震序列 震源位置和速度结构联合反演 大同震区 速度结构 |
Study on Earthquake Sequence Location and Velocity Structure in Datong Hypocenter Area |
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| JIN Yu-ke,LIANG Xiang-jun,JIN Yu-zhen,SONG Mei-qin,WANG Yan,ZHANG Ling.Study on Earthquake Sequence Location and Velocity Structure in Datong Hypocenter Area[J].Earthquake Research in Shanxi,2010(3):1-6. |
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| Authors: | JIN Yu-ke LIANG Xiang-jun JIN Yu-zhen SONG Mei-qin WANG Yan ZHANG Ling |
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| Institution: | JIN Yu-ke1,5,LIANG Xiang-jun2,JIN Yu-zhen3,SONG Mei-qin2,WANG Yan4,ZHANG Ling2,3(1.Daixian Central Seismological Station of Earthquake Administration of Shanxi Province,Daixian 034200,China,2.Earthquake Administration of Shanxi Province,Taiyuan 030021,3.Taiyuan Reference Seismological Station of Earthquake Administration of Shanxi Province,Taiyuan 030025,4.Datong Central Seismological Station of Earthquake Administration of Shanxi Province,Datong 037008,5.National Continental R... |
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| Abstract: | Using the epicenter location and velocity structure joint inversion method,the earthquake location and velocity structure inversion of the 1989 M6.1,1991 M5.8 and 1999 M5.6 earthquake sequences in Datong area has been carried out to determine their earthquake sequence distribution and hypocenter area velocity structure.The results indicate that:(1) the seismogenic faults are Dawang fault with NNE strike and Tuanbo fault with NWW strike for the three earthquake sequences,and the three earthquake sequences oc... |
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| Keywords: | earthquake location earthquake sequence epicenter location and velocity structure joint inversion Datong seismic area velocity structure |
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