摘要
搜集和整理了1970年以来山东及近邻区域地震台网记录的近震和地方震的P波初动方向资料,以格点尝试法计算求取了该区1970年至2001年的102组中小地震单震震源机制解和部分台站及小区域综合机制解结果。为了解以往手工求解的机制解结果与此次计算结果的差异与否,做了部分资料的手工与计算结果的对比分析。最后依据这些资料对山东地区现今中小地震的破裂机制进行了分析讨论。
102 sets of single focal mechanism solutions of moderate and small earthquakes have been obtained by grid points test method,with the data including the first motion direction of P wave of near and local earthquakes from 1970 to 2001,collected and edited by us.And some composite mechanism solutions for seismic stations and small regions were given respectively in this paper.In order to find out the difference between computerized results determined now and manual results obtained from past works,we analyzed the data of the results from computerized solutions,contrasing with the manual one.Further more,the fracture mechanisms of Shandong area nowadays were discussed in brief.Key worksFocal mechanism solution;Signal earthquake;Shandong area
出处
《东北地震研究》
2003年第1期1-11,共11页
Seismological Research of Northeast China
基金
中国地震局十五攻关项目 (2 0 0 1BA 6 0 1B 0 1 0 4 0 1 )部分成果
