基于日变化相关的地磁低点位移异常可靠性分析方法

来源 :中国地震 | 被引量 : 0次 | 上传用户：zw9885

【摘要】

：

地磁低点位移法是20世纪提出的地震短临预测方法,该方法通过研究每日中国大陆地磁低点时间变化特征,给出地震短临预测意见,但不足之处是其仅研究了地磁日变化畸变的时间特征,未研究畸变幅度,因此虚报率高.本文通过分析低点位移线两侧台站地磁日变化的相关性,研究了地磁低点位移异常畸变幅度与地震的关系,并统计了2008-2018年出现的162次低点位移异常的地震预测对应率.结果显示,加入本文给出的相关方法异常判据后,地磁低点位移法报对率自39％增至56％,表明相比仅使用传统的低点位移法,基于日变化相关的地磁低点位移异

【作者】

：

黄颂李军辉姚丽姜楚峰

【机构】

：

中国地震局地震研究所,武汉430071;湖北省地震局,武汉430071;安徽省地震局,合肥230000;中国地震台网中心,北京 100045

【出处】

：

中国地震

【发表日期】

：

2021年4期

【关键词】

：

地磁日变化地磁低点位移地震异常

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基于日变化相关的地磁低点位移异常可靠性分析方法

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