首都圈地震活动完整性震级时空分布特征研究  

Temporal-spatial Distribution Characteristics of Minimum Magnitude of Completeness in the Capital Region of China

作　　者：武敏捷[1] 武安绪[1] 龙锋[2] 林向东[1] 赵雯佳[3] 

机构地区：[1]北京市地震局,北京100080 [2]四川省地震局,四川成都610041 [3]中国地震局兰州地震研究所,甘肃兰州730000

出　　处：《地震》2013年第3期98-106,共9页Earthquake

基　　金：北京市地震局任务性科技专项(JZX-201103)

摘　　要：根据首都圈活动构造展布特征,将首都圈划分为西区、中区、东区三个地区,采用拟合效果测试法计算首都圈及各分区1970年以来最小完整性震级随时间的变化,并且依据各研究区域随时间的变化特征,将各研究区域从时间上划分为三个研究时段,分别研究各时段最小完整性震级的空间分布特征。研究表明,各时段的最小完整性震级在空间上具有明显的差异性,而且2000年以来各研究区域的最小完整性震级趋于稳定,MC均能控制在ML2.0以内。Based on the distribution characteristics of active tectonics,we divided the Capital zone into three areas：west,middle and east.Using goodness-of-fit test method,we calcaulated the minimum magnitude of completeness for each area,and studied their temporal variations.Based on the temporal variation characteristics of the minimum magnitude of completeness,we temporally divided each area into three periods and studied their spatial distribution characteristic.The results showed that each area＇s minimum magnitude of completeness has apparent spatial difference among the periods and went to be stable after 2000,and that MC could controlled below ML2.0.

关 键 词：最小完整性震级 拟合效果测试法 首都圈 

分 类 号：P315.7[天文地球—地震学]