RESEARCH ON CORRELATION COEFFICIENT OF SPECTRAL AMPLITUDE AND CONSISTENCY OF FOCAL MECHANISMS OF HUTUBI EARTHQUAKE SEQUENCE WITH M_S6.2 ON DECEMBER 8~(TH),2016
LIU Jian-ming;XIANG Yuan;NIE Xiao-hong;GAO Rong;Earthquake Agency of Xinjiang Uygur Autonomous Region;
Based on digital waveform data recorded by Xinjiang Digital Seismic Network for Hutubi earthquake sequences with M_S6. 2 on December 8 th,2016,calculated on correlation coefficient of spectral amplitude and events with similar focal mechanism were grouped using clustering method.Results showed that:( 1) Moving average correlation coefficient of amplitude spectrum begined to spread after the main shock remaining low values after Hutubi earthquake with M_S6. 2. The focal mechanism of earthquake was chaotic,then the following would be the small and medium earthquake activity consistent with the actual earthquake.( 2) Earthquake sequences were mainly thrust type.The stress distribution of the main pressure axis was nearly NS which was the same with structural stress field.( 3) There was not an agreement after the main shock,which showed that the regional stress field dropped.
【CateGory Index】： P315.33