| 南黄海Ms6.1地震前江苏重磁异常变化 |
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| 引用本文： | 倪春成,刘书生,冯志生,张辉,朱彦高.南黄海Ms6.1地震前江苏重磁异常变化[J].防灾减灾工程学报,1997(2). |
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| 作者姓名： | 倪春成 刘书生 冯志生 张辉 朱彦高 |
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| 作者单位： | 江苏省地震分析预报中心 |
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| 摘 要： | 结合重力资料分析认为，江苏地磁异常亦与下扬子地幔流应力场活动相关。南黄海Ｍｓ６．１地震前地磁异常有呈象限分布的规律，并有发生于地磁正负变化梯度带附近的特征；重力变化打破年变规律，出现大于区域场的负异常，且呈梯度变化
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| 关 键 词： | 重磁法 地震活动 异常分析 |
ANOMALOUS VARIATIONS OF GRAVITY AND GEOMAGNETIC FIELDS OF JIANGSU CAUSED BY SOUTH YELLOW SEA EARTHQUAKE OF M s6.1 |
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| Ni Chuncheng,Liu Shusheng,Feng Zhisheng,Zhang Hui,Zhu Yangao.ANOMALOUS VARIATIONS OF GRAVITY AND GEOMAGNETIC FIELDS OF JIANGSU CAUSED BY SOUTH YELLOW SEA EARTHQUAKE OF M s6.1[J].Journal of Disaster Prevent and Mitigation Eng,1997(2). |
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| Authors: | Ni Chuncheng Liu Shusheng Feng Zhisheng Zhang Hui Zhu Yangao |
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| Abstract: | Combining geomagnetic and gravity data to analyse anomaly, it is concluded that the geomagnetic anomaly of Jiangsu region is related to the stress field caused by mantle flow in lower Yangtze area. The geomagnetic anomaly exhibited a quadrantal distribution, and the law of annual variation of gravity is breaked, and regional field negative anomaly expresses gradient variation before the South Yellow Sea earthquake of M s 6.1. |
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| Keywords: | gravity magnetic method seismicity anomalous analysis |
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