DOI: 10.1002/2015GL066773
论文题名: Nonstorm loss of relativistic electrons in the outer radiation belt
作者: Katsavrias C. ; Daglis I.A. ; Turner D.L. ; Sandberg I. ; Papadimitriou C. ; Georgiou M. ; Balasis G.
刊名: Geophysical Research Letters
ISSN: 0094-8293
EISSN: 1944-8024
出版年: 2015
卷: 42, 期: 24 起始页码: 10521
结束页码: 10530
语种: 英语
英文关键词: Electron Dropout
Scopus关键词: Geomagnetism
; Magnetopause
; Magnetosphere
; Phase space methods
; Radiation belts
; Interplanetary coronal mass ejections
; Low energy electrons
; Orders of magnitude
; Outer radiation belt
; Particle measurement
; Phase space densities
; Relativistic electron
; Substorm injections
; Electrons
; atmospheric electricity
; coronal mass ejection
; electron density
; geomagnetic storm
; magnetopause
; magnetosphere
; probe
; radial diffusion
英文摘要: We report observations of electron Phase Space Density (PSD) dropout and evidence that supports the loss mechanism of magnetopause shadowing and outward radial diffusion during a nonstorm period characterized by persistently positive values of the SYM-H index. On 14 April 2013 an electron PSD dropout of 2 orders of magnitude was observed at the nightside magnetosphere by the Van Allen Probes. The magnetopause shadowing was associated with a strong pulse attributed to the arrival of an interplanetary coronal mass ejection. It is shown, for the first time in detail, that significant losses to the magnetosheath may occur even in the absence of significant reconnection and magnetic storm activity. Signatures of substorm injections that penetrate the outer belt and enhance the low-energy electrons were also observed right after the interplanetary pressure pulse. Moreover, particle measurements from THEMIS constellation also show a PSD depletion in the dayside magnetosphere. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955203490&doi=10.1002%2f2015GL066773&partnerID=40&md5=283395c91220baf474c0beb35b00bc10
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7909
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Physics, National and Kapodistrian University of Athens, Athens, Greece
Recommended Citation:
Katsavrias C.,Daglis I.A.,Turner D.L.,et al. Nonstorm loss of relativistic electrons in the outer radiation belt[J]. Geophysical Research Letters,2015-01-01,42(24).