DOI: 10.1002/2014GL062655
论文题名: A dayside plasma depletion observed at midlatitudes during quiet geomagnetic conditions
作者: Park J. ; Stolle C. ; Xiong C. ; Lühr H. ; Pfaff R.F. ; Buchert S. ; Martinis C.R.
刊名: Geophysical Research Letters
ISSN: 0094-8941
EISSN: 1944-8672
出版年: 2015
卷: 42, 期: 4 起始页码: 967
结束页码: 974
语种: 英语
英文关键词: dayside plasma bubble
; inverted-C structure
; Swarm constellation
Scopus关键词: Geomagnetism
; Plasma density
; Satellites
; Geographic location
; Geomagnetic conditions
; Grace satellites
; Ground-based instruments
; Magnetic latitude
; Plasma bubble
; Swarm constellation
; Total electron content
; Geodetic satellites
; airglow
; electron density
; geomagnetic field
; GRACE
; gravity wave
; midlatitude environment
; plasma
; tilt
; Leeward Islands [Lesser Antilles]
; Puerto Rico
; Saint Croix
; Virgin Islands
; Virgin Islands (U.S.)
英文摘要: In this study we investigate a dayside, midlatitude plasma depletion (DMLPD) encountered on 22 May 2014 by the Swarm and GRACE satellites, as well as ground-based instruments. The DMLPD was observed near Puerto Rico by Swarm near 10 LT under quiet geomagnetic conditions at altitudes of 475-520km and magnetic latitudes of ∼25-30. The DMLPD was also revealed in total electron content observations by the Saint Croix station and by the GRACE satellites (430km) near 16LT and near the same geographic location. The unique Swarm constellation enables the horizontal tilt of the DMLPD to be measured (35 clockwise from the geomagnetic east-west direction). Ground-based airglow images at Arecibo showed no evidence for plasma density depletions during the night prior to this dayside event. The C/NOFS equatorial satellite showed evidence for very modest plasma density depletions that had rotated into the morningside from nightside. However, the equatorial depletions do not appear related to the DMLPD, for which the magnetic apex height is about 2500km. The origins of the DMLPD are unknown, but may be related to gravity waves. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924918516&doi=10.1002%2f2014GL062655&partnerID=40&md5=3e64815e79fcd4533262648d296e40ba
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8557
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: Helmholtz Centre Potsdam, GFZ, German Research Centre for Geosciences, Potsdam, Germany
Recommended Citation:
Park J.,Stolle C.,Xiong C.,et al. A dayside plasma depletion observed at midlatitudes during quiet geomagnetic conditions[J]. Geophysical Research Letters,2015-01-01,42(4).