Abstract:Using the seismic waveform data recorded by regional seismic network of Xinjiang and the method of CAP, we calculate the focal mechanism of 50 earthquakes with magnitude MS≥3.0 occurring in Hutubi during from Jan.15,2010 to Jan. 2,2017. Then, we analyze the types and the regional features of the focal mechanism of earthquakes in Hutubi. Based on the data of the above focal mechanism solutions, we invert the stress field of Hutubi area using MSATSI software. The result shows that the main compressional stress P axis is near NNE, indicating that the region stress field is mainly under action of the level extrusion of NNE. The horizontal compression is more obvious in the eastern part of the study area. Stress field is more significant for NNE direction during 2010 to 2016, but does not change the general characteristics of the maximum principal stress axis in the region, indicating that the study area may be mainly affected by a stable stress field of NNE.
LI Yanyong,WANG Chenghu,YANG Jiajia. The Focal Mechanism Solution and Stress Field Inversion of Earthquakes Along Hutubi[J]. jgg, 2018, 38(12): 1246-1250.