Internally and externally induced deformations of the magnetospheric equatorial current as inferred from spacecraft data

被引：27

作者：

Tsyganenko, N. A. ^{[1
]}

Andreeva, V. A. ^{[1
]}

Gordeev, E. I. ^{[1
]}

机构：

[1] St Petersburg State Univ, Inst & Fac Phys, St Petersburg 199034, Russia

来源：

ANNALES GEOPHYSICAE | 2015年 / 33卷 / 01期

基金：

俄罗斯科学基金会;

关键词：

Magnetospheric physics; magnetospheric configuration and dynamics; MAGNETOTAIL CURRENT SHEET; GEOTAIL; COMPONENT; PLASMA; SHAPE; WIND;

D O I：

10.5194/angeo-33-1-2015

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Based on a data pool of 79 yearly files of space magnetometer data by Polar, Cluster, Geotail, and THEMIS satellites between 1995 and 2013, we developed a new quantitative model of the global shape of the magnetospheric equatorial current sheet as a function of the Earth's dipole tilt angle, solar wind ram pressure, and interplanetary magnetic field (IMF). This work upgrades and generalizes an earlier model of Tsyganenko and Fairfield (2004) by extending the modeling region to all local times, including the dayside sector. In particular, an essential feature of the new model is the bowl-shaped tilt-related deformation of the equatorial surface of minimum magnetic field, similar to that observed at Saturn, whose existence in the Earth's magnetosphere has been demonstrated in our recent work (Tsyganenko and Andreeva, 2014).

引用

页码：1 / 11

页数：11

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