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包头6.4级地震前银川地磁台的地磁转换函数异常
The anomalism of geomagnetic transfer function of Yinchuan geomagnetic station before Baotou earthquake with mag 6 4 in 1996
【摘要】 分析研究了银川地磁台 1 995~ 1 996年周期从 T=9~ 2 0 0 min的地磁转换函数 A的模|A|,B的模 |B|,帕金森矢量 Cp,倾角 I以及方位角αp的变化 ,结果表明上述参量在 1 996年包头 6.4级地震前存在不同程度的异常 ,认为在地震预报中利用地磁转换函数是一种有希望的方法
【Abstract】 By analysing geomagnetic data of Yinchuan geomagnetic station during 1995 and 1996,the variations of moduli |A| and |B| of geomagetic transfer function in the period range from 9 to 200 minutes,Parkinson vector C p,angle of inclination I and azimuth angle α p were studied.The results show that the transfer function occurred considerably anomaly before Baotou earthquake with mag 6 4 in 1996.Authors think the anomaly of transfer function can be used to predict earthquake.
【关键词】 银川地磁台;
转换函数;
包头地震;
【Key words】 Yinchuan geomagnetic station; transfer function; Baotou earthquake;
【Key words】 Yinchuan geomagnetic station; transfer function; Baotou earthquake;
- 【文献出处】 地震地磁观测与研究 ,SEISMOLOGICAL AND GEOMAGNETIC OBSERVATION AND RESEARCH , 编辑部邮箱 ,2000年02期
- 【分类号】P315
- 【下载频次】47