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汶川地震强余震与引潮力关系的初步研究
Preliminary research on relation between strong aftershock of Wenchuan earthquake and tidal force
【摘要】 以汶川地震为例,统计分析2008年5月12日—2009年9月30日5级以上强余震与引潮力的关系,发现平行断层方向的线应变引潮力峰(谷)值时间与汶川地震及强余震发震时间的对应关系较好,且其对应程度与断层性质有关。综合分析认为,引潮力可能是地震的诱发因素之一。
【Abstract】 Wenchuan earthquake is taken as example, relation between strong aftershock above M 5.0 of wenchuan earthquake and tidal force has been counted and analyzed. The results show occurrence time of wave crest/trough on linear strain of tidal force paralleled fault is corre-sponded with Wenchuan earthquake and strong aftershocks, and correspondence is related with fault character. Composite analyses indicate tidal force maybe is one of factors drew in earthquake occurrence.
【关键词】 汶川地震;
龙门山断裂;
引潮力;
线应变;
【Key words】 Wenchuan earthquake; Longmenshan fault; tidal force; linear strain;
【Key words】 Wenchuan earthquake; Longmenshan fault; tidal force; linear strain;
【基金】 国家自然科学基金(NSF40674024);中国地震局南北地震带北段大震危险性强化跟踪研究项目;陕西省地震局青年科研基金课题联合资助
- 【文献出处】 地震地磁观测与研究 ,Seismological and Geomagnetic Observation and Research , 编辑部邮箱 ,2010年03期
- 【分类号】P315
- 【被引频次】3
- 【下载频次】9