Low-latitude geomagnetic response to the interplanetary conditions during very intense magnetic storms

被引：5

作者：

Rawat, R. ^{[1
]}

Alex, S. ^{[1
]}

Lakhina, G. S. ^{[1
]}

机构：

[1] Indian Inst Geomagnetism, New Panvel W 410218, Navi Mumbai, India

来源：

ADVANCES IN SPACE RESEARCH | 2009年 / 43卷 / 10期

关键词：

Magnetic storms; Interplanetary magnetic fields; Solar wind; FIELD-ALIGNED CURRENTS; RING CURRENT; INNER MAGNETOSPHERE; SOLAR-WIND; ORIGIN; ENERGY;

D O I：

10.1016/j.asr.2009.01.025

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The variations in the horizontal and declination components of the geomagnetic field in response to the interplanetary shocks driven by fast halo coronal mass ejections, fast solar wind streams from the coronal hole regions and the dynamic pressure pulses associated with these events are studied. Close association between the field-aligned current density (j(parallel to)) and the fluctuations in the declination component (Delta D-ABG) at Alibag is found for intense storm conditions. Increase in the dawn-dusk interplanetary electric field (E-y) and Delta D-ABG are generally in phase. However, when the magnetospheric electric field is directed from dusk to dawn direction, it prominent scatter occurs between the two. It is suggested that low-latitude ground magnetic data may serve its it proxy for the interplanetary conditions in the solar wind. (C) 2009 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：1575 / 1587

页数：13

共 48 条

[1] ON THE ASYMMETRIC DEVELOPMENT OF MAGNETIC STORM FIELDS IN LOW AND MIDDLE LATITUDES [J].