甘肃天祝地区垂直地电场观测数据分析  

OBSERVATIONAL DATA ANALYSIS OF VERTICAL GEOELECTRIC FIELD IN TIANZHU AREA,GANSU PROVINCE

作　　者：颜蕊[1] 王兰炜[1] 张世中[1] 刘大鹏[1] 胡哲[1] 张兴国[1] 朱旭[1] 张宇[1] 

机构地区：[1]中国地震局地壳应力研究所,北京100085

出　　处：《大地测量与地球动力学》2013年第4期39-43,共5页Journal of Geodesy and Geodynamics

基　　金：中国地震局地壳应力研究所基本科研业务专项(ZDJ2011-6)

摘　　要：结合同台观测的水平地电场数据,对甘肃天祝地区红沙湾、黄羊川和松山三个台站连续3年的垂直地电场观测数据特征进行了研究,结果表明:1)三个台站垂直地电场观测数据均具有较为稳定的近正弦形态的年变化周期,但数值大小不同、年变周期的相位不同;2)红沙湾台垂直地电场记录到的临震前的异常现象,在时间、空间上都与地震事件的发生吻合较好,是否为地震异常,值得深入研究。Combining with horizontal geoelectric field data in Hongshawan, Huangyangchuan and Songshan stations in Gansu province, the vertical geoelectric field data of three years observed in the three stations are stud ied. The results showed that ： 1 ） The obvious and stable annual periods of sinusoidal shape were found from vertical geoelectric field data in the three stations, but the value and the phases of an annual variation period are different. 2） The impending anomalies before the earthquakes recorded by the vertical geoelectric field from Hongshawan sta tion agreed with the earthquake occurrence in time and space. But whether the anomalies were caused by the earth quakes, a further research is needed.

关 键 词：垂直地电场 水平地电场 长趋势特征 地电暴 地震前兆 

分 类 号：P315.721[天文地球—地震学]