河北邯郸2019年12月24日地磁异常分析

Analysis of geomagnetic anomalies on December 24,2019,in Handan region of Hebei Province

河北邯郸地区的广平和涉县地磁台地磁Z分量数据在2019年12月24日同时出现加卸载响应比和逐日比高值变化,通过观测系统检测、测区环境调查,排除干扰因素影响。利用空间影响分析、台站其他观测仪器和省内其他地震台站相同仪器的同时段记录以及以往震例的对比分析等手段,分析认为,此次Z分量数据的异常变化应为一次局部地磁地球物理事件。

Z component geomagnetic observations at the Guangping and Shexian stations in the Handan region of Hebei Province show high-value anomalies in loading and unloading response ratio and daily response ratio on Dec.24,2019.The influence of interference factors is ruled out after checking the observation system and the environment of the observing area.By doing space impact analysis,comparing with records of other observation instruments at the same stations and the same type instruments at other seismic stations in the province in the same observing period,and carrying out a comparative analysis of previous earthquakes,we conclude that the abnormal change in the Z component observation is from a local geomagnetic geophysics event.