DOI: 10.1002/2017JA024934
Scopus记录号: 2-s2.0-85044859429
论文题名: Motions of the Convection Reversal Boundary and Local Plasma in the High-Latitude Ionosphere
作者: Chen Y.-J. ; Heelis R.A.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 4 起始页码: 2953
结束页码: 2963
语种: 英语
英文关键词: convection reversal boundary
; high-latitude ionosphere
; plasma and boundary motion
英文摘要: We present results from a systematic study of multisatellite samplings from the Defense Meteorological Satellite Program F13, F15, F16, F17, and F18 satellites over the period from 2007 to 2015 that describe the motion of the convection reversal boundary (CRB) and the local plasma flow across it. Focusing on the cases with continuous poleward and equatorward CRB motion sampled by three consecutive satellites within 50 min, 45% of the time the CRB motion may deviate from the local plasma motion near dawn and dusk where the reconnection process is unlikely to be present. Differences in the inferred CRB motion and the local plasma motion may arise from apparent motion induced by the local time displacement of consecutive samples across the CRB that is tilted with respect to a line of constant latitude. The presence of a viscous-like interaction across the CRB can also contribute to the difference in the CRB and plasma motion. Accounting for these processes, the CRB motion and the motion of the plasma at the CRB are consistent only if a back and forth motion over a timescale of a few minutes is superimposed on a monotonic migration of the CRB over longer time periods. ©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/114116
Appears in Collections: 气候减缓与适应
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作者单位: William B. Hanson Center for Space Sciences, University of Texas at Dallas, Richardson, TX, United States
Recommended Citation:
Chen Y.-J.,Heelis R.A.. Motions of the Convection Reversal Boundary and Local Plasma in the High-Latitude Ionosphere[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(4)