A Preliminary Analysis of the Seismogenic Structure of the Akto MS6. 7 Earthquake Sequence on November 25, 2016

作者：LIANG Shanshan,XU Zhiguo,CHEN Hongfeng,ZOU Liye,LIU Jingguang

摘要：In this study,data from the Xinjiang regional network and IRIS shared global stations are used to relocate the Akto MS6. 7 earthquake sequence on November 25,2016 by using double difference location method. Three earthquakes of MS4. 8,MS6. 7 and MS5. 0 are inverted by using the g CAP method,and the focal mechanism solutions are obtained.According to the results of relocating,the location of the main shock is 39. 22°N,73. 98°E,the distribution of the earthquake sequence is about 70 km in length,and the focal depth is mainly within the range of 5-20 km. The plane and depth profiles of the earthquake sequence show that aftershocks extended in SEE direction after the main shock and the dip angle of fault plane is steep. Focal mechanism results show that the three earthquakes are characterized by strike-slip movement. Based on the results of field geological investigation,it is inferred that the seismogenic fault of the Akto earthquake is Muji fault,which is located at the northernmost end of the Kongur extensional system.The possible cause of this earthquake is that the Indian Plate continues to push northward,and during this compression process,the Indian Plate is affected by the clockwise rotation of the Tarim basin,which causes the accumulation of right-lateral action of the Muji fault,resulting in this earthquake.

发文机构：China Earthquake Networks Center Key Laboratory of Marine Disaster Prediction Technology Key Laboratory of Computational Geodynamics

关键词：AktoMS6.7EARTHQUAKEEARTHQUAKElocationFOCALmechanismMUJIfaultKongurEXTENSIONALsystem

分类号： P31[天文地球—固体地球物理学][天文地球—地球物理学]