四川地区4级以上调制小震与5级以上中强地震的关系探讨

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英文篇名：Study on the relationship between modulated earthquakes more than M4.0 and moderate strong earthquakes more than M5 in Sichuan Province 中文刊名：四川地震 英文刊名：Earthquake Research in Sichuan 作者：李卫平 ; 冯蔚 ; 杨桂岺 英文作者：LI Wei-ping ; FENG Wei ; YANG Gui-qin(China Seismic Networks Center ; Beijing 100045 ; China) 中文关键词：4级以上调制小震 ; 5级以上中强地震 ; 四川地区 英文关键词：modulated earthquake ; moderate strong earthquake ; Sichuan Province 出版日期：2009-09-15 机构：中国地震台网中心; 年：2009 期：03 出版单位：四川地震

摘要

通过对四川地区1972年以来的地震目录进行挑选和分析,得到四川地区4级以上调制小震与5级以上中强地震的对应数据结果。在所发生的41组调制小震中只有14组对应发生了中强地震,这说明在四川地区调制小震与中强地震的对应关系不是太好。但是,调制小震与中强地震的发震地点间的距离对应相关却比较好,平均距离间隔为93.49千米;所对应的调制小震与中强地震的发震时间的时间间隔平均为17.5个月。
The seismic events from the seismic catalogue of Sichuan Province since 1972 are selected and analyzed.The statistical corresponding data between earthquakes more than M4.0 and earthquakes more than M5.0 are calculated.The statistical corresponding data include 41 groups among which 14 groups are linked to the moderate strong earthquakes.It means that the link between modulated earthquakes more than M4.0 and moderate strong earthquakes more than M5.0 in Sichuan Province is weak.But their distance link among earthquakes more than M5.0 seems to be strong.The average distance between every two earthquakes is 93.94 kilometers and the average interval is 17.5 months.

引文

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