摘要
The basic parameters,seismogenic structure and seismic sequences characteristics of the Yutian MS7. 3 earthquake on February 12,2014 are introduced and compared to the Yutian MS7. 3 earthquake in 2008. The results show that the MS5. 4 earthquake is regarded as an immediate foreshock of the Yutian MS7. 3 main shock. The frequency of strong aftershock sequences was low and their number declined quickly,and the maximum aftershock was a MS5. 7 earthquake. According to analysis of the historical earthquake sequence type,and parameter of h-value,b-value and energy release ratio between main shock and sequence etc.,we found the preliminary conclusion that the Yutian MS7. 3 earthquake sequence in 2014 was a foreshock-main shock-aftershock type.
The basic parameters, seismogenic structure and seismic sequences characteristics of the Yutian Ms7. 3 earthquake on February 12, 2014 are introduced and compared to the Yutian Ms7. 3 earthquake in 2008. The results show that the Ms5. 4 earthquake is regarded as an immediate foreshock of the Yutian Ms7.3 main shock. The frequency of strong aftershock sequences was low and their number declined quickly, and the maximum aftershock was a Ms 5. 7 earthquake. According to analysis of the historical earthquake sequence type, and parameter of h-value, b-value and energy release ratio between main shock and sequence etc. , we found the preliminary conclusion that the Yutian Ms 7. 3 earthquake sequence in 2014 was a foreshock-main shock-aftershock type.
基金
funded by the Open-end Foundation of State Key Laboratory of Earthquake Dynamics(LED2014B01)
Project of Earthquake Science Foundation of Xinjiang,China(20120201)
