地震学报Issue(4)：631-639,9.DOI:10.3969/j.issn.0253-3782.2014.04.009
2008年以来滇西地区地震序列的谱振幅相关系数变化特征
Characteristics of the correlation coefficient of spectral amplitude of earthquake sequences in western Yunnan region since 2008
摘要
Abstract
Using digital seismic waves recorded by Yunnan Digital Seismic Net-work,we calculated the correlation coefficient of spectral amplitude of six MS ≥4.0 earthquake sequences occurred from 2008 to 2011 in western Yunnan re-gion.The results suggest that the correlation coefficient of spectral amplitude of earthquake sequences are generally high value,no matter the sequence is fore-shock,main shock-aftershock or earthquake swarm,which may be caused by high stress filed in the source region.A smaller correlation coefficient of spec-tral amplitude,which means less consistency of focal mechanisms and low level of stress filed,can be used as an index to predict that larger earthquakes will not follow behind.The correlation coefficient of spectral amplitude of foreshock sequence is larger;however,a larger correlation coefficient does not indicate the earthquake sequence is foreshock.A larger correlation coefficient of spectral amplitude only implies high level of the stress field,but it is beneficial to occur-ring MS ≥5.0 earthquake in the source region.关键词
地震序列/滇西地区/谱振幅相关系数/震源机制一致性Key words
earthquake sequence/western Yunnan region/correlation coeffi-cient of spectral amplitude/consistency of focal mechanism分类
天文与地球科学引用本文复制引用
黄浩,付虹..2008年以来滇西地区地震序列的谱振幅相关系数变化特征[J].地震学报,2014,(4):631-639,9.基金项目
云南省人民政府“十项重大措施”地震监测预报项目（JCYB-20080601-05）资助． （）
