| 邢台5．4级地震前的流动重力和地磁异常初步研究 |
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| 引用本文： | 苏树朋,张跃刚,史彦华,王顺昌,张纳莉,刘洪良.邢台5．4级地震前的流动重力和地磁异常初步研究[J].地震地磁观测与研究,2009,30(1):56-63. |
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| 作者姓名： | 苏树朋 张跃刚 史彦华 王顺昌 张纳莉 刘洪良 |
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| 作者单位： | 1. 中国河北,071000,保定地震中心台
2. 中国石家庄,050021,河北省地震局 |
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| 基金项目： | 河北省地震局青年地震科学基金 |
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| 摘 要： | 根据测值空间变化等值线和时序变化曲线，分析了2002年邢台5．4级地震前流动重力和流动地磁异常的动态演化。两种异常震前表现出如下特征：①流动重力、流动地磁观测资料均有较为明显的前兆异常反应；②地震发生在重力变化的“0”等值线附近；③流动地磁部分点位测值呈现趋势性异常，震前全部点位观测值整体上升，形成完整的高值异常区。
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| 关 键 词： | 邢台地震 流动重力 流动地磁 异常特征 |
Study on the gravitational and geomagnetic anomalies before Xingtai MS 5.4 earthquake |
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| Su Shupeng,Zhang Yuegang,Shi Yanhua,Wang Sunchang,Zhang Nali,Liu Hongliang.Study on the gravitational and geomagnetic anomalies before Xingtai MS 5.4 earthquake[J].Seismological and Geomagnetic Observation and Research,2009,30(1):56-63. |
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| Authors: | Su Shupeng Zhang Yuegang Shi Yanhua Wang Sunchang Zhang Nali Liu Hongliang |
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| Institution: | Su Shupeng , Zhang Yuegang , Shi Yanhua , Wang Sunchang , Zhang Nali and Liu Hongliang(1.aoding Seismic Station, Hebei Province 071000, China 2. Earthquake Administration of Hebei Province, Shijiazhuang 050021, China) |
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| Abstract: | Based on the isolines and images, the evolution of gravitational and geomagnetic anomalies before Xingtai Ms 5.4 earthquake in 2002 is analyzed. The two kind anomalies showed the following characteristic, clear gravitational and geomagnetic anomalies all appeared in the observational data; the variation of gravity became stronger and the earthquake occurred near the 0 isoline of gravity~ the geomagnetic values in part of the mobile observation sites showed tendency anomaly, and a high value anomaly region was formed with the increasing of the observational values in the whole network. |
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| Keywords: | Xingtai earthquake mobile gravity mobile geomagnetism characteristic of anomaly |
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