鄂尔多斯块体周缘地震类型研究  

Study on the type of earthquake sequence at the edge of Ordos Block

作　　者：刘春[1] 关昕[1] 石军[1] 

机构地区：[1]陕西省地震局,中国西安710068

出　　处：《地震地磁观测与研究》2012年第2期1-5,共5页Seismological and Geomagnetic Observation and Research

基　　金：陕西省地震局青年科研基金(201002)

摘　　要：分析1970—2010年鄂尔多斯周缘发生的114次显著地震序列,结果表明,主余型序列占57%,孤立型序列占32%,多震型序列占11%。根据地震类型的空间分布特点,对鄂尔多斯周缘地震进行分区,各分区主余型地震占多数,多震型地震主要集中在鄂尔多斯北缘和东缘中北段,孤立型地震在鄂尔多斯西缘南段、南缘和东缘南段比例较高。114 earthquake sequences at the edge of Ordos block from 1970 to 2010 are analyzed. The results show that among the 114 earthquake sequences 57% is the mainshock-aftershock type, 32% for the isolated type and 11% for multi-shock type. In the three types of earth- quake, the mainshock-aftershock type presents even distribution, the isolated type accounts for a rather high percentage in the southwest edge, south edge and southeast edge of the bloc, the multi-shock type mostly occurred in the north edge and northeast edge of the block.

关 键 词：鄂尔多斯周缘 序列分析 时空特征 地震类型 

分 类 号：P315[天文地球—地震学]