【摘要】 利用甘肃及邻近地区地磁垂直分量日变化极小值时间(低点时间)资料,分析了1995~2003年地磁"低点时间"在空间分布上的异常特征,即地磁"低点位移"现象,发现地磁"低点位移"现象除了有其自身的变化规律外,还与该区中强震的发生存在较好的相关性。1995~2003年的9年间,甘肃省中强震前均出现地磁"低点位移"现象。这表明地磁"低点位移"对该区地震的短临预测预报有一定的参考价值。更多还原

【Abstract】 The paper analyzes the distribution characteristics of geomagnetic low-value displacement in Gansu and its adjacent areas from 1995 to 2003 on the basis of the data of the daily amplitude minimum value time of geomagnetic vertical component. It is shown that in addition to the changing rules of geomagnetic low-value displacement itself, there is a better correlation between geomagnetic low-value displacement and occurrence of moderately strong earthquake. There appeared geomagnetic low-value displacement before the moderately strong earthquakes in Gansu in the 9 years from 1995 to 2003 the result indicates that geomagnetic low-value displacement is guidable in earthquake prediction to some extent.更多还原