华南地震2013，Vol.33Issue(2)：41-46,6.
安庆M4.8级地震前地磁低点位移现象研究
The Phenomenon of Geomagnetic Low-point Displacement before Anqing M4.8 Earthquake
摘要
Abstract
Based on the analysis of phase and amplitude geomagnetic Z comporent of 42 stations before Anqing M4.8 earthquake in East China,We find that the spatial distribution of the appearance time of the minima (the low-point time of the geomagnetic vertical component) appears anomalous features before the M4.8 earthquake; the strike of dividing line along the Tanlu fault appears NNE; The difference of laotim between the both sides of the dividing line are more than 2 hours.It has been found that most earthquakes occur in the vicinity of the boundary line of sudden change of the low-point displacement and generally within 29th day counting from the day of appearance of the anomaly.The anomalies of diurnal variation may have some connection with Anqing earthquake.关键词
安庆地震/地磁Z分量/低点位移/地磁日变Key words
Anqing M4.8 earthquake / Geomagnetic Z component/ The low point displacement / Daily variation of geomagnetic分类
天文与地球科学引用本文复制引用
李军辉,何康,陈俊,洪德全,陶月潮,郑海刚..安庆M4.8级地震前地磁低点位移现象研究[J].华南地震,2013,33(2):41-46,6.基金项目
2012年中国地震局震情跟踪任务(2012020402)资助 （2012020402）
