LARGE-SCALE BIRKELAND CURRENTS IN THE DAYSIDE POLAR-REGION DURING STRONGLY NORTHWARD IMF - A NEW BIRKELAND CURRENT SYSTEM

被引：245

作者：

IIJIMA, T ^{[1
]}

POTEMRA, TA ^{[1
]}

ZANETTI, LJ ^{[1
]}

BYTHROW, PF ^{[1
]}

机构：

[1] JOHNS HOPKINS UNIV,APPL PHYS LAB,LAUREL,MD 20707

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS | 1984年 / 89卷 / NA9期

关键词：

GEOPHYSICS; -; Magnetic;

D O I：

10.1029/JA089iA09p07441

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The paper determines the detailed characteristics of the stable and well-defined pattern of transverse magnetic disturbances in the polar regions that persist during periods of strongly positive interplanetary magnetic field (IMF) B//z. These disturbances also reveal the presence of the Region 1 and Region 2 Birkeland currents that are significantly lower in intensity than this new polar region system. The most intense currents are poleward of, and oppositely directed to, the Region 1 Birkeland currents and extend to the highest latitudes observed. This new current system appears to intensify during strongly northward IMF and there appears to be a clear asymmetry in the spatial patterns associated with the IMF B//y component.

引用

页码：7441 / 7452

页数：12

共 30 条

[1]

Acuna M. H., 1980, Johns Hopkins APL Technical Digest, V1, P210

[2] INTER-PLANETARY ENERGY FLUX ASSOCIATED WITH MAGNETOSPHERIC SUBSTORMS [J].