地震地磁观测与研究2011，Vol.32Issue(6)：1-7,7.DOI:10.3969/j.issn.1003-3246.2011.06.001
昆仑-巴颜喀拉块体强震前后地震活动性综合参量变化特征
Investigation on the characteristics of variation in the synthesized seismicity parameter before strong earthquakes occuring in the KunlunBayan Har block
摘要
Abstract
Eight earthquakes with magnitude equal to 7 and more have occurred within the Kunlun-Bayan Har block since 1970. It reveals the exceptionally severe earthquake activity in the block in recent years. In order to investigate the characteristics of abnormal variation in the seismicity of the block, a synthesized seismicity parameter is introduced to generally depict the state of earthquake activity, denoted by R,, and the characteristics of R, before strong earthquakes in the block is examined systematically. The characteristics of the spacial distribution of R, is obtained by taking a point on a tectonic fault as the center of the scanning region. In this study the two earthquakes with Ms 8. 0 or over and the Ms 7.1 Yushu earthquake in Qinghai, China on April 14, 2010 are taken as the examples to analyze the characteristics of the spacial and temporal abnormal variation in R, value showing before the occurrence of them, and the effect of prediction of R, value is tested. The results show that Rt value decreased obviously prio to the three events. When the tectonic block is taken as the research region in the study of the relationship between R, value and strong earthquakes, the reproducibility of the characteristics of abnormal seismicity prior to the occurrence of the strong earthquakes can be seen clearly.关键词
昆仑-巴颜喀拉块体/地震综合参数/预测效能检验Key words
the Kunlun-Bayan Har block, the synthesized seismicity parameter, test of the effect of prediction引用本文复制引用
王林瑛,韩邵欣,陈学忠..昆仑-巴颜喀拉块体强震前后地震活动性综合参量变化特征[J].地震地磁观测与研究,2011,32(6):1-7,7.基金项目
中国地震局地球物理研究所基本科研业务专项资助,课题编号DQJB10B09 （）
