【摘要】 收集整理了琼中地震台2002~2012年地磁Z分量低点时间分布状况、分析其平均低点时间分布特征,得出其年平均低点时间集中在北京时间12点52分,主要分布范围在12点10分和13点34分之间,且不同的季节月份均有不同程度的调整和变化,以此作为判断某日低点时间异常的基础,确定低点位移异常,为地震分析预报服务,提高地震预报的准确度。更多还原

【Abstract】 In order to analyze the average low point time distribution of geomagnetic Z component,we collected the geomagnetic Z component data in Qiongzhong seismic station from 2002 to 2012.We find that: he annual average low point time focuses on GMT12 ∶52, and are mainly distributed between GMT12:10 and GMT13:34; There are adjustment and change in varying degrees in different month and seasons. As the basis of determining whether a day low point time is abnormal, we can determine the geomagnetic low point displacement for the earthquake prediction and improve the accuracy of earthquake prediction.更多还原