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| 海城盖州地区速度结构和震源位置的联合反演研究 | |
| 引用本文： | 王亮,周龙泉,焦明若,曹凤娟,翟丽娜.海城盖州地区速度结构和震源位置的联合反演研究[J].地震,2014,34(3):13-26. |
| 作者姓名： | 王亮 周龙泉 焦明若 曹凤娟 翟丽娜 |
| 作者单位： | 1.中国科学技术大学地球与空间科学学院,安徽合肥230026; 2.中国地震台网中心,北京100045; 3.辽宁省地震局,辽宁沈阳110034 |
| 基金项目： | 辽宁省地震局重点实验室项目(LNDZ2014003) |
| 摘 要： | 2012年2月至2013年4月在辽宁盖州地区连续发生了5次4级左右地震,分别为2012年2月2日ML4.7、4.2地震、7月12日ML4.2地震11月1日ML4.0地震以及2013年3月30日ML4.0级地震,地震序列大致呈NW向分布。利用2008年以来盖州地区和海城一岫岩地区的地震观测数据,采用震源位置和速度结构联合反演的软件包Simulps14,给出了两个地.区的小震精定位结果和三维速度结构。发现盖州地区震群发生位置较浅,且随时间向西北向展布;其地下速度结构与海城地区地下速度结构存在一定的相似性,分析认为盖州震群是发生在.一条类似于大洋河断裂但规模较小的新的断裂带上。 |
| 关 键 词： | 盖州震群 联合反演 精定位 速度结构 |
| 收稿时间： | 2013-11-18 |
| 修稿时间： | 2014-02-26 |
Simultaneous Inversion for Earthquake Hy pocenters and V elocity Structure in the Haicheng and Gaizhou Area,Liaoning Province |
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| WANG Liang,ZHOU Long-quan,JIAO Mingruo,CAO Fengjuan.Simultaneous Inversion for Earthquake Hy pocenters and V elocity Structure in the Haicheng and Gaizhou Area,Liaoning Province[J].Earthquake,2014,34(3):13-26. | |
| Authors: | WANG Liang ZHOU Long-quan JIAO Mingruo CAO Fengjuan |
| Institution: | 1. School of Earth and Space Science, University of Science and Technology of China,Hefei 230026, China; 2. China Eart hguake Networks Center, Beijing 100045,China; 3. Liaoning Seis mological Bureau, Shenyang 110034, China |
| Abstract: | There are several ML4.0 earthquakes occurred in the Gaizhou area, Liaoning province from Feb.2, 2012 to Apr. 30,2013. This earthquake sequence shows a roughly NW-trending distribution. We use eart hquake observation reports recorded by regional seismic stations during the period from 2008 to 2013. Through simul taneous inversion method of ear thquake hypocenters and velocity structure, we got the eart hquake location and velocity structure of Gaizhou and Haicheng area by software Simulps14. The result of earthquake location shows that Gaizhou ear thquake warm occurred in a shallower depth, and over time, to the northwest trending. The Gaizhou's underground velocity structure is similar to Haicheng' s underground velocity structure. We think that the Gaizhou earth-quake swarm occurred in a new and smaller fault similar to the Dayanghe fault. |
| Keywords: | Simultaneous inversion Velocity structure The Gaizhou earthquake swarm |
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