DOI: 10.1002/2013GL058588
论文题名: Rebuilding of the Earth's outer electron belt during 8-10 October 2012
作者: Kress B.T. ; Hudson M.K. ; Paral J.
刊名: Geophysical Research Letters
ISSN: 0094-10383
EISSN: 1944-10114
出版年: 2014
卷: 41, 期: 3 起始页码: 749
结束页码: 754
语种: 英语
英文关键词: radiation belt transport
Scopus关键词: Geomagnetism
; Plasma sheaths
; Radiation belts
; Recovery
; Storms
; Electron belts
; Geomagnetic storm
; In-situ observations
; Interplanetary magnetic fields
; Magnetospheric convection
; Outer radiation belt
; Strong convections
; Test particles
; Electrons
; belt
; boundary layer
; convection
; electron
; geomagnetic storm
; magnetic field
; magnetosphere
; numerical model
; radiation balance
英文摘要: Geomagnetic storms often include strong magnetospheric convection caused by sustained periods of southward interplanetary magnetic field. During periods of strong convection, the Alfvén layer, which separates the region of sunward convection from closed drift shells, is displaced earthward allowing plasma sheet particles with energies in the hundreds of keV direct access inside of geosynchronous. Subsequent outward motion of the Alfvén boundary and adiabatic energization during storm recovery traps plasma sheet electrons on closed drift shells providing a seed population for the outer radiation belts. In situ observations of the 8-10 October 2012 geomagnetic storm and MHD test particle simulations illustrate the morphology of this process. Data and modeling results support the conclusion that recovery of ~ 1 MeV electrons at geosynchronous is mainly due to global convection and dipolarization associated injections from the plasma sheet. Key Points Recovery of 1 MeV electrons at geosynchronous mainly due to global convection Transport near GSO is dominated by convection during strong storms Build up of 1 MeV e- at GSO well modeled with MHD test-particle model ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893204457&doi=10.1002%2f2013GL058588&partnerID=40&md5=f9035637a22a8f06acedba6fb03a2399
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7647
Appears in Collections: 气候减缓与适应
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作者单位: Department of Physics and Astronomy, Dartmouth College, Hanover, NH, United States
Recommended Citation:
Kress B.T.,Hudson M.K.,Paral J.. Rebuilding of the Earth's outer electron belt during 8-10 October 2012[J]. Geophysical Research Letters,2014-01-01,41(3).