地震地磁观测与研究2012，Vol.33Issue(5)：44-48,5.DOI:10.3969/j.issn.1003-3246.2012.05/06.009
唐山老震区地震活动特征
Study on seismicity features of Tangshan Seismic Region
摘要
Abstract
This paper corrected complete Tangshan earthquake sequence data for long time. Based on the time-space epidemic-type aftershock sequence (ETAS) model and stochastic declustering method declustering on 1976 Tangshan earthquake sequence analyzed activity characteristics of long time. The result showed that Tangshan seismic region entering the late phase of the aftershock activity after 1992, now seismic activity has not yet been fully restored to the background seismicity level. With the frequency and strain energy of two different abnormal index analyzed the indicative significance of Tangshan Seismic Region as "aftershock window" forecast the moderate and strong earthquakes, The result showed that 1980—1986 in the early stages of Tangshan "aftershock window", frequency as abnormal index reflecting earthquake effect was better, 1992—2010 in the late stages, strain energy as the abnormal index reflecting earthquake effect was better.关键词
老震区/长期活动/ETAS模型/余震窗口/频次/应变能Key words
long-term seismicity of seismic region/ ETAS model/ aftershock window frequency strain energy引用本文复制引用
王想,冯向东,宫猛,王亚茹,单连君,李冬圣..唐山老震区地震活动特征[J].地震地磁观测与研究,2012,33(5):44-48,5.基金项目
2011年度震情跟踪工作任务(2011020101) （2011020101）
河北省地震局地震科研基金2010年度重点项目 （）
