Saturation of global field aligned currents observed during storms by the Iridium satellite constellation

被引：16

作者：

Anderson, B. J. ^{[1
]}

Korth, H. ^{[1
]}

机构：

[1] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA

来源：

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2007年 / 69卷 / 1-2期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

field aligned currents; geomagnetic storms; Birkeland current saturation; partial ring current;

D O I：

10.1016/j.jastp.2006.06.013

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We use Iridium constellation magnetometer data to characterize the global-scale storm-time Birkeland currents. For 11-12 August 2000 we find a strong storm main phase dawn-dusk asymmetry in the latitudes of the region 1-2 current systems and that the total current is not linearly related to the interplanetary electric field, E-y. Examination of 23 storms occurring for 1999-2003 shows clear evidence for a non-linear, saturation behavior in total current with E-y, with the total Birkeland current constrained to be below 20 MA. (c) 2006 Published by Elsevier Ltd.

引用

页码：166 / 169

页数：4

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