上海地磁加卸载响应比资料分析与地震研究  

Data Analysis of Geomagnetic Load-unload Response Ratio and Earthquake Research in Shanghai

作　　者：李伟[1] 龚耀 

机构地区：[1]上海市地震局,上海200062 [2]崇明地震台,上海202164

出　　处：《华南地震》2013年第4期31-38,共8页South China Journal of Seismology

基　　金：地震科技星火计划(XH12016);上海市科委科研计划项目(批准号:12231202700)共同资助

摘　　要：采用GM4型磁通门磁力仪与佘山台57型地磁记录得到的地磁加卸载响应比值P(Z)进行地震中短期预测分析,通过对两种设备在共同观测时期得到的P(Z)值进行分析。结果表明:由不同设备得到的P(Z)值能满足以往的异常判定标准,GM4磁通门磁力仪得到的P(Z)值映震能力较好,可与佘山台57型地磁记录仪匹配使用。For the 57 type magnetometer stopping observation in Chongming station, we only use the geomagnetic load-unload response ratio p（z） obtained from the recordings of the GM4 type fluxgate magnetometer in Chongming station and recordings of the 57 type magnetometer in Sheshan station studying the medium and short term earthquake prediction through the method of geomagnetic load-unload response in Shanghai,. To determine the p（z） values obtained from the different instruments whether can meet the anomaly index that laid down by the same observation instruments, the paper analyzes the p（z） values obtained by the different instruments in the same period. The results show that the p（z） obtained by the GM4 type fluxgate magnetometer is able to effectively reflect seismic precursory anomaly and match the p（z） values that obtained by the 57 type magnetometer in the Sheshan station.

关 键 词：地磁加卸载响应比 地磁记录仪 异常 阈值 

分 类 号：P314.2[天文地球—固体地球物理学]