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2011年9月10日瑞昌-阳新地震发震构造初探
Preliminary discussion on the seismogenic structure of 2011 Ruichang-Yangxin earthquake
- DOI:
- 作者:
- 王向腾1,2) 李志伟1) 包丰3) 崇加军3) 谢祖军1,2) 储日升1) 金笔凯1,
Wang Xiangteng1,2) Li Zhiwei1) Bao Feng3) Chong Jiajun3) Xie Zujun1,2) Chu Risheng1) Jin Bikai1
- 作者单位:
- 1) 1、中国武汉430077中国科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室2) 中国北京100049中国科学院大学3) 中国合肥230026中国科学技术大学地球和空间科学学院蒙城地球物理国家野外科学观测研究站
1) State Key Laboratory of Geodesy and Earth’s Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan, 430077, China2) University of Chinese Academy of Sciences, Beijing, 100049, China3) Mengcheng National Geophysical Observatory, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China
- 关键词:
- 2011年瑞昌-阳新地震；sPL震相；震源位置；发震构造
2011 Ruichang-Yangxin earthquake sPL depth phase focal depth seismogenic structure
- 摘要:
- 基于密集流动台阵，联合使用主事件法和sPL深度震相，对2011年9月10日瑞昌-阳新Ms4.6地震及其余震序列进行重新定位，获得了更为准确的震源位置。结果显示：重新定位后主震的水平位置为29.70°N，115.47°E，误差约1km；震源深度为15km，误差约为2km。结合地震序列定位结果、主震震源机制解和震区NE向断层发育的构造背景，初步探讨了主震可能的发震构造。
Based on the records of the temporary seismic array and combined master event technique and the sPL phase, we relocate the Ruichang-Yangxin earthquake sequences which occurred on 10 September, 2011 inJiangxiprovince. The relocation results indicate that the epicenter of the main shock is relocated to be 29.70°N，115.47°E , whose error is about1km, the focal depth is about15km, whose error is about2km. Combining the location of the earthquake sequence, the focal mechanism of the main shock and the tectonic condition of NE faults growth in seismic region, we preliminarily discuss probable seismogenic structure of the main shock.
