On the determination of a moving MHD structure: Minimization of the residue of integrated Faraday's equation

被引:27
作者
Terasawa, T
Kawano, H
Shinohara, I
Mukai, T
Saito, Y
Hoshino, M
Nishida, A
Machida, S
Nagai, T
Yamamoto, T
Kokubun, S
机构
[1] INST SPACE & ASTRONAUT SCI,SAGAMIHARA,KANAGAWA 229,JAPAN
[2] KYOTO UNIV,DEPT GEOPHYS,SAKYO KU,KYOTO 606,JAPAN
[3] TOKYO INST TECHNOL,DEPT EARTH & PLANETARY SCI,TOKYO 152,JAPAN
[4] NAGOYA UNIV,STEL,TOYOKAWA,AICHI 442,JAPAN
[5] UNIV CALIF LOS ANGELES,INST GEOPHYS & PLANETARY PHYS,LOS ANGELES,CA 90024
来源
JOURNAL OF GEOMAGNETISM AND GEOELECTRICITY | 1996年 / 48卷 / 5-6期
关键词
D O I
10.5636/jgg.48.603
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
A new method to estimate the spatial structure of the moving magnetohydrodynamic (MHD) system is presented. We integrate the Faraday's induction equation, partial derivative (B) over right arrow/partial derivative t - rot (E) over right arrow, assuming that the system is one-dimensional. The spatial gradient direction, along which the integration is made, is determined by minimizing the residue of the integrated Faraday's equation against the observed magnetic field. This new method can be regarded as an extension of the conventional magnetic minimum variance method. Sample data analyses using this new method for magnetotail events are also presented.
引用
收藏
页码:603 / 614
页数:12
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