| Observation and analysis of geomagnetic abnormity associated with the Ms=5.7 Jiujiang-Ruichang earthquake |
| |
| 作者姓名： | 顾左文 张毅 姚同起 高金田 刘欣 陈斌 詹志佳 顾春蕾 |
| |
| 作者单位： | [1]Institute of Geophysics, China Earthquake Administration, Beijing 100081, China [2]Earthquake Administration of Anhui Province, Hefei 230031, China |
| |
| 基金项目： | Project of China Earthquake Administration. Contribution No. 06FE3026, Institute of Geophysics, China Earthquake Administration. |
| |
| 摘 要： | A three-component geomagnetic survey was carried out during the period from 2002 to 2004 in China including Jiujiang-Ruichang region. Comparing the ＂2005.0 surface spline model of China geomagnetic field＂ created on the basis of the survey data with the ＂1970.0 surface spline model of China geomagnetic field＂, we can see an obvious abnormity in the geomagnetic horizontal component within a range of about 100 km around the epicenter of the Ms=5.7 Jiujiang-Ruichang earthquake occurred on November 26, 2005. After the earthquake, we carded out a repeated geomagnetic survey at 21 stations in the Jiujiang-Ruichang region and created a corresponding ＂2005.0 partially revised surface spline model of China geomagnetic field＂. By comparing the above three models, analyzing the geomagnetic horizontal component at the profile in the Jiujiang-Ruichang region and quantitatively studying the geomagnetic data of every stations around the Ms=5.7 earthquake, we have obtained the geomagnetic abnormity associated with this earthquake. Then the geomagnetic abnormity and its relation with seismic activity are discussed in this paper.
|
| 关 键 词： | 地磁异形 地磁变化 地震 地球磁场 |
| 文章编号： | 1000-9116（2006）06-0658-12 |
| 收稿时间： | 2006-03-30 |
| 修稿时间： | 2006-07-10 |
Observation and analysis of geomagnetic abnormity associated with the Ms=5.7 Jiujiang-Ruichang earthquake |
| |
| GU Zuo-wen,ZHANG Yi,YAO Tong-qi,GAO Jin-tian,LIU Xin,CHEN Bin,ZHAN Zhi-jia,GU Chun-lei.Observation and analysis of geomagnetic abnormity associated with the Ms=5.7 Jiujiang-Ruichang earthquake[J].Acta Seismologica Sinica(English Edition),2006,19(6):658-669. |
| |
| Authors: | GU Zuo-wen ZHANG Yi YAO Tong-qi GAO Jin-tian LIU Xin CHEN Bin ZHAN Zhi-jia GU Chun-lei |
| |
| Institution: | 1. Institute of Geophysics, China Earthquake Administration, Beijing 100081, China
2. Earthquake Administration of Anhui Province, Hefei 230031, China |
| |
| Abstract: | A three-component geomagnetic survey was carried out during the period from 2002 to 2004 in China including Jiujiang-Ruichang
region. Comparing the “2005.0 surface spline model of China geomagnetic field” created on the basis of the survey data with
the “1970.0 surface spline model of China geomagnetic field”, we can see an obvious abnormity in the geomagnetic horizontal
component within a range of about 100 km around the epicenter of the M
S=5.7 Jiujiang-Ruichang earthquake occurred on November 26, 2005. After the earthquake, we carried out a repeated geomagnetic
survey at 21 stations in the Jiujiang-Ruichang region and created a corresponding “2005.0 partially revised surface spline
model of China geomagnetic field”. By comparing the above three models, analyzing the geomagnetic horizontal component at
the profile in the Jiujiang-Ruichang region and quantitatively studying the geomagnetic data of every stations around the
M
S=5.7 earthquake, we have obtained the geomagnetic abnormity associated with this earthquake. Then the geomagnetic abnormity
and its relation with seismic activity are discussed in this paper.
Contribution No. 06FE3026, Institute of Geophysics, China Earthquake Administration. |
| |
| Keywords: | geomagnetic survey surface spline model geomagnetic anomaly Ms=5 7 Jiujiang-Ruichang earthquake |
| 本文献已被 维普 万方数据 SpringerLink 等数据库收录！ |
