globalchange  > 气候减缓与适应
DOI: 10.1002/2017JA024925
Scopus记录号: 2-s2.0-85044427614
论文题名:
Ionospheric Conductance Spatial Distribution During Geomagnetic Field Reversals
作者: Zossi B.S.; Elias A.G.; Fagre M.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期:3
起始页码: 2379
结束页码: 2397
语种: 英语
英文关键词: Earth's magnetic field ; Hall conductance ; Pedersen conductance ; secular variation
英文摘要: The conductivity of the ionosphere is extremely important in geophysical processes and plays a critical role in magnetosphere-ionosphere-thermosphere coupling. Understanding its nature is essential to understand the physics of ionospheric electrodynamics. Earth's magnetic field, which varies greatly in geological time scales, is among the main variables involved in ionospheric conductivity. The present field can be approximated by a magnetic dipole that accounts for ~80% of the magnetic field at the Earth's surface, plus multipolar components making up the remaining ~20%. During a polarity transition the field magnitude diminishes to about 10% of its normal value at the expense, most likely, of decreasing the dipolar component and becoming mostly multipolar in nature. The effects of geomagnetic field variations on the spatial structure of Hall and Pedersen conductances are analyzed in the present work considering some possible reversal scenarios. The spatial structure of both conductances changes significantly with sharp spatial gradients. The conductivity peak heights also change, moving to upper heights as expected for weaker field configurations. ©2018. American Geophysical Union. All Rights Reserved.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114354
Appears in Collections:气候减缓与适应

Files in This Item:

There are no files associated with this item.


作者单位: INFINOA (CONICET-UNT) and Laboratorio de Fisica de la Atmosfera, Departamento de Fisica, Facultad de Ciencias Exactas y Tecnologia, Universidad Nacional de Tucuman, San Miguel de Tucumán, Argentina; Consejo Nacional de Investigaciones Cientificas y Tecnicas, Buenos Aires, Argentina; Laboratorio de Telecomunicaciones, Departamento de Electricidad, Electrónica y Computación, Facultad de Ciencias Exactas y Tecnología, Universidad Nacional de Tucuman, San Miguel de Tucumán, Argentina

Recommended Citation:
Zossi B.S.,Elias A.G.,Fagre M.. Ionospheric Conductance Spatial Distribution During Geomagnetic Field Reversals[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(3)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zossi B.S.]'s Articles
[Elias A.G.]'s Articles
[Fagre M.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Zossi B.S.]'s Articles
[Elias A.G.]'s Articles
[Fagre M.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zossi B.S.]‘s Articles
[Elias A.G.]‘s Articles
[Fagre M.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.