DOI: 10.1002/2015GL064101
论文题名: A thermospheric Na layer event observed up to 140 km over Syowa Station (69.0°S, 39.6°E) in Antarctica
作者: Tsuda T.T. ; Chu X. ; Nakamura T. ; Ejiri M.K. ; Kawahara T.D. ; Yukimatu A.S. ; Hosokawa K.
刊名: Geophysical Research Letters
ISSN: 0094-9091
EISSN: 1944-8822
出版年: 2015
卷: 42, 期: 10 起始页码: 3647
结束页码: 3652
语种: 英语
英文关键词: high latitude
; lidar
; Na layer
; Syowa
; thermosphere
Scopus关键词: Atmospheric electricity
; E region
; Ionosphere
; Optical radar
; Antarctica
; Co-located
; High Latitudes
; Number density
; Orders of magnitude
; Peak density
; Syowa
; Thermosphere
; Sodium
; atmospheric electricity
; aurora
; latitude
; layer
; lidar
; sodium
; thermosphere
; Antarctica
; East Antarctica
; Syowa Station
英文摘要: We report a thermospheric Na layer event (up to 140 km) observed by lidar in the night of 23-24 September 2000 at Syowa (69.0°S, 39.6°E), Antarctica. The thermospheric Na number densities were 2-9 cm-3 at 110-140 km, 3 orders of magnitude smaller than the peak density of the normal layer at 80-110 km. The thermospheric Na layers exhibited a wave-like structure with a period of 1-2 h. The colocated ionospheric/auroral observations showed sporadic E layers over Syowa through the night and an enhancement of the ionospheric/auroral activity around south side of Syowa at the event beginning. Adopting the theory by Chu et al. (2011), we hypothesize that the thermospheric Na layers are neutralized from converged Na+ layers. An envelope calculation shows good consistency with the observations. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931575595&doi=10.1002%2f2015GL064101&partnerID=40&md5=48339f6810b930524ce67a8036239d21
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8707
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: National Institute of Polar Research, Tachikawa, Japan
Recommended Citation:
Tsuda T.T.,Chu X.,Nakamura T.,et al. A thermospheric Na layer event observed up to 140 km over Syowa Station (69.0°S, 39.6°E) in Antarctica[J]. Geophysical Research Letters,2015-01-01,42(10).