DOI: 10.1002/2016GL068136
论文题名: Polar cap patches and the tongue of ionization: A survey of GPS TEC maps from 2009 to 2015
作者: David M. ; Sojka J.J. ; Schunk R.W. ; Coster A.J.
刊名: Geophysical Research Letters
ISSN: 0094-9258
EISSN: 1944-8989
出版年: 2016
卷: 43, 期: 6 起始页码: 2422
结束页码: 2428
语种: 英语
英文关键词: GPS TEC maps
; patches
; polar cap
; seasonal dependence
; tongue of ionization
; UT dependence
Scopus关键词: F region
; Geomagnetism
; Ionosphere
; Precipitation (chemical)
; Surveys
; GPS TEC
; Patches
; Polar cap
; Seasonal dependence
; Tongue of ionizations
; UT dependence
; Ionization
; electron
; F region
; geological mapping
; geological survey
; GPS
; Internet
; ionization
; mass transfer
; Northern Hemisphere
; particle settling
; polar region
; seasonality
英文摘要: The source and structuring mechanisms for F region density patches have been subjects of speculation and debate for many years. We have made a survey of mappings of total electron content (TEC) between the years 2009 and 2015 from the web-based Madrigal data server in order to determine when patches and/or a tongue of ionization (TOI) have been present in the Northern Hemisphere polar cap; we find that there is a UT and seasonal dependence that follows a specific pattern. This finding sheds considerable light upon the old question of the source of polar cap patches, since it virtually eliminates potential patch plasma sources that do not have a UT/seasonal dependence, for example, particle precipitation or flux transfer events. We also find that the frequency of occurrence of patches or TOIs has little to do with the level of geomagnetic activity. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962681944&doi=10.1002%2f2016GL068136&partnerID=40&md5=176fd84b2bf6322f198974cb1ea53a67
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10221
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: Center for Atmospheric and Space Sciences, Utah State University, Logan, UT, United States
Recommended Citation:
David M.,Sojka J.J.,Schunk R.W.,et al. Polar cap patches and the tongue of ionization: A survey of GPS TEC maps from 2009 to 2015[J]. Geophysical Research Letters,2016-01-01,43(6).