| Characteristics and analysis of the geomagnetic variations in regions around the Qiongzhou Strait |
| |
| 引用本文： | 范国华,姚同起,顾左文,朱克佳,陈伯舫,冯戬云. Characteristics and analysis of the geomagnetic variations in regions around the Qiongzhou Strait[J]. 地震学报(英文版), 1994, 0(2) |
| |
| 作者姓名： | 范国华 姚同起 顾左文 朱克佳 陈伯舫 冯戬云 |
| |
| 作者单位： | Guo-Hua FAN; Tong-Qi YAO; Zuo-Wen GU;Ke-Jia ZHU; Po-Fang CHEN and Jian-Yun FENG (Institute of Geophysics，State Seismological Bureau，Beijing 100081，China)(University of Hong Kong) |
| |
| 摘 要： | Ｃｈａｒａｃｔｅｒｉｓｔｉｃｓ ａｎｄ ａｎａｌｙｓｉｓ ｏｆ ｔｈｅ ｇｅｏｍａｇｎｅｔｉｃ ｖａｒｉａｔｉｏｎｓ ｉｎ ｒｅｇｉｏｎｓ ａｒｏｕｎｄ ｔｈｅ Ｑｉｏｎｇｚｈｏｕ Ｓｔｒａｉｔ（范国华）（姚同起）（顾左文）（朱克佳）（陈伯舫）（冯戬...
|
Characteristics and analysis of the geomagnetic variations in regions around the Qiongzhou Strait |
| |
| Guo-Hua FAN, Tong-Qi YAO, Zuo-Wen GU,Ke-Jia ZHU, Po-Fang CHEN and Jian-Yun FENG. Characteristics and analysis of the geomagnetic variations in regions around the Qiongzhou Strait[J]. Acta Seismologica Sinica(English Edition), 1994, 0(2) |
| |
| Authors: | Guo-Hua FAN Tong-Qi YAO Zuo-Wen GU Ke-Jia ZHU Po-Fang CHEN Jian-Yun FENG |
| |
| Abstract: | A measuring profile was set up in both sides of the Qiongzhou strait to carry out the simultaneous observation of three component geomagnetic variation. The observed synchronous geomagnetic vertical variations of short periods were reversed on the both sides of the strait. It means that there is a abnormal concentration of electric current in the area. Spatial wave number domain analysis was performed by Sompi spectral analysis for the spatial distribution and the internal and the external parts of the geomagnetic variation field were separated. Inversion of the internal field was carried out by generalized inverse matrix inversion based on singular value decomposition and the distribution of undergrond current density was obtained. The discussion suggests that this abnormal current concentration comes from current channelling effect in the Quaternary sediment in this region. |
| |
| Keywords: | singular value decomposition Sompi spectral analysis current channelling effect |
| 本文献已被 CNKI 等数据库收录！ |
