太原郝庄5.0级地震前后地磁异常研究

英文篇名：Study on the geomagnetism anomalies in Taiyuan Seismic Station before and after Haozhuang MS 5.0 earthquake
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：张亮娥 ; 殷志刚 ; 陈常俊 ; 魏锦龙 ; 闫计明
英文作者：Zhang Liang'e ; Yin Zhigang ; Chen Changjun ; Wei Jinlong and Yan Jiming(Taiyuan Seismic Station ; Shanxi Province 030025 ; China)
中文关键词：地震 ; 地磁 ; 异常
英文关键词：earthquake ; geomagnetism ; anomaly
出版日期：2007-12-25
机构：太原基准地震台,太原基准地震台,太原基准地震台,太原基准地震台,太原基准地震台,
年：2007
期：06
出版单位：地震地磁观测与研究

摘要

2002年9月3日在太原郝庄发生了ML5.0地震,此次地震是1957年太原MS5.0地震后时隔45年太原地区发生的最大地震。震中距太原地磁台仅为20km。太原地磁台属国家Ⅱ类台,已有20多年的观测历史,此次地震前后,台站观测到不同程度的异常。本文应用"加卸载响应比法"、"低点位移"、"一阶差分"、"转换函数"4种方法,对这些异常从时间和空间两方面进行了分析处理和对比研究,给出了一些异常特征和定量化指标。
An earthquake of MS 5.0 occurred in Haozhuang country on Sep.3th,2002,which was the strongest earthquake in this area after the Taiyuan MS 5.0 in 1957.The distance between the epicenter and Taiyuan seismological station was only 20 km.The Taiyuan seismological station is a national station of gradeⅡ.It has observed earthquake about twenty years.There were some anomalies identified from the observation data of geomagnetism before and after the earthquake.Four different methods are employed to analyze and comparatively study these anomalies in temporal and spatial aspect for obtaining some characteristics of anomalies and quantified index.The different method is load/unload response ratio,low-point displacement,differential method and reverse function.

引文

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