精河Ms5.1级地震前精河台的定点形变异常的初步研究  

PRELIMINARY RESEARCH ON ANOMALIES OF FIXED—POINT DEFORMATION BEFORE JINGHE Ms5.1 EARTHQUKE

作　　者：王新刚[1] 王文景[1] 唐小勇[1] 黄建明[1] 杨福喜[1] 曹伟东[1] 罗洪亮[1] 张向阳[1] 包翠玲[1] 

机构地区：[1]新疆维吾尔自治区地震局乌鲁木齐基准地震台,新疆乌鲁木齐830017

出　　处：《高原地震》2009年第2期18-23,共6页Plateau Earthquake Research

摘　　要：2006年11月23日新疆精河Ms5.1级地震前,精河台的伸缩、倾斜和长水管资料均出现了明显的前兆异常变化。利用形态分析、一阶差分、矢量合成、卡尔曼滤波方法对资料进行分析处理,结果表明新疆乌苏、精河间Ms5.1级地震前的短临异常较为明显,年变幅观测曲线畸变、日均值曲线转折甚至打破年变、矢量转向、速率变化超两倍均方差等,显示出这次地震之前地形变异常具有较高的可信度。On November 23, 2006, before Jinghe MsS. 1 earthquake, the extensometer, tilt and the long water pipe inclinometer in Jinghe seismic station presented obvious anomalies which are analyzed by the morphologic method, differential method, Kallman＇ s filtering method. The results show that the unusual variation, daily mean values and the ratio are extreamly anomaly before the Ms5. 1 earthquake, and this also shows that these deformation anomalies are reliable before earthquakes.

关 键 词：地震前兆 形态法 差分法 矢量法 卡尔曼滤波 

分 类 号：P315.725[天文地球—地震学]