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| 地磁内、外源场分离及其强震前内、外源电流体系的演化特征 | |
| 引用本文： | 张建国,刘晓灿,唐庭梅,马新欣,袁亚红. 地磁内、外源场分离及其强震前内、外源电流体系的演化特征[J]. 大地测量与地球动力学, 2009, 29(5) |
| 作者姓名： | 张建国 刘晓灿 唐庭梅 马新欣 袁亚红 |
| 作者单位： | 1. 河北省地震局邯郸中心台,邯郸,056006 2. 中国地震局地球物理研究所,北京,100081 3. 山东省地震局,济南,250014 |
| 基金项目： | 国家科技支撑课题，中央级公益性科研院所基本科研业务专项 |
| 摘 要： | 利用地磁内外源场分离方法,反演1997年11月8日玛尼地震前地下和空间等效电流体系的演化图像,分析了地磁低点位移出现前后等效电流体系变化特征.结果表明:内、外场等效电流体系的变化与地震"低点位移"异常现象有着内在的联系,等效电流体系变化可能是地磁低点位移异常现象产生的原因之一. |
| 关 键 词： | 地磁内外源场分离 地磁低点位移 Sq等效电流体系 演化图像 地震预测 |
SEPARATION OF INTERIOR AND EXTERIOR OF GEOMAGNETIC FIELD AND EVOLUTION CHARACTERISTICS OF INTERIOR AND EXTERIOR CURRENT SYSTEM BEFORE STRONG EARTHQUAKE |
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| Zhang Jianguo),Liu Xiaocan),Tang Tingmei),Ma Xinxin), Yuan Yahong))Central Seismostation of H,an,Earthquake Administration of Hebei Provine,H,an )Institute of Geophysics,CEA,Beijing )Earthquake Administration of Sh,ong Province,Jinan. SEPARATION OF INTERIOR AND EXTERIOR OF GEOMAGNETIC FIELD AND EVOLUTION CHARACTERISTICS OF INTERIOR AND EXTERIOR CURRENT SYSTEM BEFORE STRONG EARTHQUAKE[J]. Journal of Geodesy and Geodynamics, 2009, 29(5) | |
| Authors: | Zhang Jianguo) Liu Xiaocan) Tang Tingmei) Ma Xinxin) Yuan Yahong))Central Seismostation of H an Earthquake Administration of Hebei Provine H an )Institute of Geophysics CEA Beijing )Earthquake Administration of Sh ong Province Jinan |
| Affiliation: | Zhang Jianguo1),Liu Xiaocan2),Tang Tingmei3),Ma Xinxin2), Yuan Yahong2)1)Central Seismostation of H,an,Earthquake Administration of Hebei Provine,H,an 0560062)Institute of Geophysics,CEA,Beijing 1000813)Earthquake Administration of Sh,ong Province,Jinan 250014 |
| Abstract: | By use of the separation of the interior and exterior geomagnetic fields the equivalent current systems of interior and exterior geomagnetic field are inversed.The relations between the geomagnetic lowest shift phenomenon and the equivalent current systems are studied.The results show there is clear relation between them,so,the change of equivalent current systems may be one of causes of the geomagnetic lowest shift. |
| Keywords: | separation of interior and exterior of geomagnetic field geomagnetic lowest shift Sq equivalent current system evolution images earthquake prediction |
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