globalchange  > 气候减缓与适应
DOI: 10.1002/2013GL057802
论文题名:
Models for electrostatic drift waves with density variations along magnetic field lines
作者: Garcia O.E.; Pécseli H.L.
刊名: Geophysical Research Letters
ISSN: 0094-8417
EISSN: 1944-8148
出版年: 2013
卷: 40, 期:21
起始页码: 5565
结束页码: 5569
语种: 英语
英文关键词: battery mechanism ; electrostatic drift waves
Scopus关键词: Conservation of energy ; Electron precipitation ; Electrostatic drift ; Field aligned currents ; Gravitational fields ; Magnetic field line ; Vertical magnetic fields ; Wave-vector components ; Electric field effects ; Electrostatics ; Ionosphere ; Ionospheric measurement ; Magnetic fields ; Magnetosphere ; Plasma density ; Plasma waves ; Positive ions ; Plasma confinement ; altitude ; drift behavior ; electronic equipment ; ionosphere ; magnetic field ; numerical model ; plasma
英文摘要: Drift waves with vertical magnetic fields in gravitational ionospheres are considered where the unperturbed plasma density is enhanced in a magnetic flux tube. The gravitational field gives rise to an overall decrease of plasma density for increasing altitude. Simple models predict that drift waves with finite vertical wave vector components can increase in amplitude merely due to a conservation of energy density flux of the waves. Field-aligned currents are some of the mechanisms that can give rise to fluctuations that are truly unstable. We suggest a self-consistent generator or "battery" mechanism that in the polar ionospheres can give rise to magnetic field-aligned currents even in the absence of electron precipitation. The free energy here is supplied by steady state electric fields imposed in the direction perpendicular to the magnetic field in the collisional lower parts of the ionosphere or by neutral winds that have similar effects. Key Points Drift waves with density gradients also along B-fields Battery mechanism inducing field aligned currents Kinetic growth-rate in addition to a geometric growth ©2013. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887139367&doi=10.1002%2f2013GL057802&partnerID=40&md5=dcfa643ea2496865b6e799b10a5002b7
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5681
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: Department of Physics and Technology, University of Tromsø, Tromsø, Norway

Recommended Citation:
Garcia O.E.,Pécseli H.L.. Models for electrostatic drift waves with density variations along magnetic field lines[J]. Geophysical Research Letters,2013-01-01,40(21).
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Garcia O.E.]'s Articles
[Pécseli H.L.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Garcia O.E.]'s Articles
[Pécseli H.L.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Garcia O.E.]‘s Articles
[Pécseli H.L.]‘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.