DOI: 10.1002/2013GL059124
论文题名: Storm time observations of plasmasphere erosion flux in the magnetosphere and ionosphere
作者: Foster J.C. ; Erickson P.J. ; Coster A.J. ; Thaller S. ; Tao J. ; Wygant J.R. ; Bonnell J.W.
刊名: Geophysical Research Letters
ISSN: 0094-10416
EISSN: 1944-10147
出版年: 2014
卷: 41, 期: 3 起始页码: 762
结束页码: 768
语种: 英语
英文关键词: erosion flux
; plasmasphere
Scopus关键词: Ionosphere
; Ions
; Magnetosphere
; Storms
; Stream flow
; Ionospheric heights
; Plasma characteristics
; Plasmasphere
; Polar latitude
; Spatial extent
; Storm-enhanced densities
; Subauroral polarization streams
; Tongue of ionizations
; Erosion
; altitude
; erosion
; ionosphere
; magnetopause
; magnetosphere
; magnitude
; observational method
; storm
英文摘要: Plasmasphere erosion carries cold dense plasma of ionospheric origin in a storm-enhanced density plume extending from dusk toward and through the noontime cusp and dayside magnetopause and back across polar latitudes in a polar tongue of ionization. We examine dusk sector (20 MLT) plasmasphere erosion during the 17 March 2013 storm (Dst ∼ -130 nT) using simultaneous, magnetically aligned direct sunward ion flux observations at high altitude by Van Allen Probes RBSP-A (at ∼3.0 Re) and at ionospheric heights (∼840 km) by DMSP F-18. Plasma erosion occurs at both high and low altitudes where the subauroral polarization stream flow overlaps the outer plasmasphere. At ∼20 UT, RBSP-A observed ∼1.2E12 m-2 s-1 erosion flux, while DMSP F-18 observed ∼2E13 m-2 s-1 sunward flux. We find close similarities at high and low altitudes between the erosion plume in both invariant latitude spatial extent and plasma characteristics. Key Points High-altitude plasmasphere erosion flux has significant magnitude Plasmasphere erosion flux has similar low- and high-altitude characteristics Fluence of ions through cusp and midnight sector exceeds 5E25 ions s-1 ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893644620&doi=10.1002%2f2013GL059124&partnerID=40&md5=c11f44de1481c823c64885d75ff0869d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7680
Appears in Collections: 气候减缓与适应
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作者单位: Haystack Observatory, Massachusetts Institute of Technology, Westford, MA, United States
Recommended Citation:
Foster J.C.,Erickson P.J.,Coster A.J.,et al. Storm time observations of plasmasphere erosion flux in the magnetosphere and ionosphere[J]. Geophysical Research Letters,2014-01-01,41(3).