临汾地震台大地电场远震前异常特征分析

英文篇名：Analysis on anomaly characteristics of geoelectric field of Linfen Seismic Station before teleseismic events
中文刊名：地震地磁观测与研究
英文刊名：Seismological and Geomagnetic Observation and Research
作者：高振强 ; 李艳 ; 荆红亮 ; 张瑞芳 ; 张仰辉 ; 冯建琴 ; 高跃雄
英文作者：Gao Zhengqiang~(1) ; 2)) ; Li Yan~(1) ; 2)) ; Jing Hongliang~(1) ; 3)) ; Zhang Ruifang~(2) ; 3)) ; Zhang Yanghui~(1) ; 3)) ; Feng Jianqin~(1 ; 3)) and Gao Yuexiong 1) Linfen Central Seismic Station ; Earthquake Administration of Shanxi Province ; Shanxi Province 041000 ; China 2) National Continental Rift Valley Dynamics Observatory of Taiyuan ; Shanxi Province 030025 ; China 3) Earthquake Administration of Shanxi Province ; Taiyuan 030021 ; China
中文关键词：临汾地震台 ; 地电场 ; 远震变化 ; 多极距噪音排除
英文关键词：Linfen Seismic Station ; geoelectric field ; variation in teleseismic ; multi-dipole eliminating noise
出版日期：2010-04-25
机构：山西省地震局临汾中心地震台;太原大陆裂谷动力学国家野外科学观测研究站;山西省地震局;
年：2010
期：02
出版单位：地震地磁观测与研究

摘要

利用多极距噪音排除等方法,对临汾地震台记录到的几次典型的远震信号进行分析研究。主要结论如下:①地电场远震变化的主要特征为在震前数小时至2天出现比较明显的扰动变化,该变化在长短极距上记录结果的一致性较好,即变化形态和变化幅度基本相当,且变化具有比较强的指向性特征;②该远震变化出现时间似乎与震中距有一定的关系,与震级关系不很明显;③该远震变化的产生可能与临汾地震台所处地质构造背景及地下介质特性关系密切,其关联性尚需分析研究。
In this paper, using multi-dipole eliminating noise method, several typical teleseismic signals recorded by Linfen Seismic Station are analyzed.The main conclusions are as follows. First, the main variation characteristics of the geoelectric field preceding teleseismic are the obvious changes in disturbance of the earthquake occurred a few hours to 2 days.The changes recorded in the long and short polar distance are in good agreement;morphology of changes is roughly equal to the magnitude, and the changes have stronger directional characteristics. Second, the time of variation occurred teieseism seems to have a certain relationship with epicenter distance, not the magnitude.And the third, the produce of variation occurred teieseism seems to have a consanguineous relationship with the geological background and characteristics of material of Linfen station, their relationship needs further analysis.

引文

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