通海地磁台地磁特征线与邻近地区地震的对应关系研究

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英文篇名：Researching on the corresponding relations between the geomagnetism features line at Tonghai Seismic Station and the earthquake in neighborhood 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：孙维怀 英文作者：Sun Weihuai(Tonghai Seismic Station ; Yunnan Province 652700 ; China) 中文关键词：地磁 ; 异常变化 ; 地震预报 ; 云南地区 英文关键词：geomagnetic ; abnormal variations ; earthquake forecast ; Yunnan area 出版日期：2008-12-25 机构：通海地磁台; 年：2008 期：06 出版单位：地震地磁观测与研究

摘要

应用地磁特征线法,计算通海台自1995年至2007年H、Z分量的地磁特征线的斜率K和特征线的相关系数C。通过对K与C的变化特征与邻区中强地震的对应关系研究,得到当通海台特征线参数K≤-0.0975和K≥-0.0106为异常,异常出现0～2月内将发生较强地震,其概率为93.8%;异常形态与云南地区的地震有很好的区域对应关系。震例分析表明,用特征线法提取的震磁异常对于地震的短临跟踪有很好的应用前景。
Using the method of geomagnetism feature line,the slope K of the geomagnetism features line of H、Z weight from 1995 to 2007 at Tonghai Station and the correlated coefficient C of features line are calculated. According to the study on the corresponding relations between the variations features of K and C and the moderate earthquakes in neighborhood,we can know that it is magnetic anomalies when the parameter K≤-0.0975 and K≥-0.0106. If the abnormal phenomenon appears and lasts from zero to two months,a stronger earthquake will take place. The probability is 93.8 percent. There is a good regional corresponding relationship between the abnormal formation and earthquake that took place in Yunnan area. Analyzing examples of earthquake shows that seismic-magnetic anomalies extracted with geomagnetic features line method has a good useful future in short-term earthquake monitor.

引文

丁鉴海.1988.地磁预报地震方法探索[R].见:地震监测与预报方法清理成果汇编,北京:地震出版社
    吴德珍.1989.地磁“特征线法”与地震预报三要素[J].四川地震,(1):39
    叶东华.1999.广东及邻区地震前地磁变化和异常判别指标[J].华南地震,(1)