| Focal Mechanism and Focal Depth of the May 22, 2016 MS4.6 Earthquake in Chaoyang, Liaoning |
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| 作者姓名： | Zhao Xing Zhang Fan Han Xiaoming Wang Shubo Wei Jianmin |
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| 作者单位： | Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 010051, China,Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 010051, China,Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 010051, China,Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 010051, China,Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 010051, China |
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| 基金项目： | This project was jointly sponsored by the Special Program of Youth Training for the National Seismological Network of CEA (20160506), and the Earthquake Science and Technology Spark Plan of CEA (XH14012Y). |
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| 摘 要： | An earthquake with MS4.6 occurred at 17:08 p.m., May 22, 2016 in Chaoyang County, Liaoning Province. We used the P-wave first motion method, TDMT method, and CAP method to determine the focal mechanisms and the PTD method and sPn-Pn method to determine the focal depth. The focal mechanism results of the three methods are consistent. The depth results of the CAP method, PTD method and sPn-Pn method are close. We used the double difference location method to relocate earthquakes in 2009-2016, and obtained the strikes and dip angles of the small earthquake distributions with the help of simulated annealing algorithm and gauss Newton algorithm fitting. According to the focal mechanism results, the depth results, the characteristics of small earthquake distributions and the structural characteristics of the source area, the seismogenic fault strike is NEE and the main pressure force direction is NNW. The earthquake focal mechanism is for a normal fault type with a little left-lateral strike slip motion.
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| 关 键 词： | Focal depth Focal mechanism The CAP method The TDMT method HypoDD |
| 收稿时间： | 2016/7/18 0:00:00 |
| 修稿时间： | 2016/11/6 0:00:00 |
Focal Mechanism and Focal Depth of the May 22, 2016 MS4.6 Earthquake in Chaoyang, Liaoning |
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| Zhao Xing,Zhang Fan,Han Xiaoming,Wang Shubo,Wei Jianmin.Focal Mechanism and Focal Depth of the May 22, 2016 MS4.6 Earthquake in Chaoyang, Liaoning[J].Earthquake Research in China,2018,32(1):100-112. |
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| Authors: | Zhao Xing Zhang Fan Han Xiaoming Wang Shubo and Wei Jianmin |
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| Abstract: | An earthquake with M_S4. 6 occurred at 17: 08 p. m.,May 22,2016 in Chaoyang County,Liaoning Province. We used the P-wave first motion method,TDMT method,and CAP method to determine the focal mechanisms and the PTD method and sP n-Pn method to determine the focal depth. The focal mechanism results of the three methods are consistent. The depth results of the CAP method,PTD method and sP n-Pn method are close. We used the double difference location method to relocate earthquakes in 2009-2016,and obtained the strikes and dip angles of the small earthquake distributions with the help of simulated annealing algorithm and gauss Newton algorithm fitting. According to the focal mechanism results,the depth results,the characteristics of small earthquake distributions and the structural characteristics of the source area,the seismogenic fault strike is NEE and the main pressure force direction is NNW. The earthquake focal mechanism is for a normal fault type with a little left-lateral strike slip motion. |
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| Keywords: | Focal depth Focal mechanism The CAP method The TDMT method HypoDD |
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