| 地震前电磁辐射信息特征研究 |
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| 引用本文： | 张学民,武有文.地震前电磁辐射信息特征研究[J].地震,1998,18(1):97-101. |
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| 作者姓名： | 张学民 武有文 |
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| 作者单位： | 河北省地震局预报中心 |
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| 摘 要： | 反映电磁辐射信息的地震前异常变化很多，但都有一个震前平静－加强－平静然后发震的特征，为了更好地体现这种特征，根据十几年来河北廊坊电磁台网的观测资料，通过给不同强度段的各台日信息量赋予不同的权值，并把当日各台权值累加来反映当日内多台信息量集中的强弱，然后把上述权累加和用一种不连续积分的方法反映异常的持续时间，通过对监测范围内４次Ｍｓ≥５．０地震震例分析，发现该方法反映震前异常特征明显，短临效果很好，
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| 关 键 词： | 电磁辐射 信息量 权 积分 地震前兆 |
STUDY ON FEATURE OF ELECTROMAGNETIC RADIATION INFORMATION BEFORE EARTHQUAKE OCCURRENCE |
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| Zhang Xuemin,Wu Youwen.STUDY ON FEATURE OF ELECTROMAGNETIC RADIATION INFORMATION BEFORE EARTHQUAKE OCCURRENCE[J].Earthquake,1998,18(1):97-101. |
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| Authors: | Zhang Xuemin Wu Youwen |
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| Abstract: | Many kings of values are used to express electromagnetic radiation information,butthere is a common feature of quieting-intensifying-quieting before earthquake occurrence.over ten years observational data from Langfang Electromagnetic Network in HebeiProvince are used in this paper to better reflect this feature. The various weight values aregiven to Electromagnetic Radiation Information Values of various intensity sections, thenthe weight of every station is accumulated to reflect the intensity of the informationamount in that day, and weight accumulation is integrated intermittently to express theanomaly duration- By analyzing four earthquakes (Ms> 5. 0) in supervising range, thismethod is found better in reflecting the short-term and impending anomaly feature beforeearthquake occurrence- Meanwhile the relation of the accumulated intensity,the durationwith the earthquake and physical mechanism of the anomaly feature has been discussed. |
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| Keywords: | Electromagnetic radiation Information amount Weight Integral |
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