DOI: 10.1002/2016GL069740
论文题名: Simultaneous storm time equatorward and poleward large-scale TIDs on a global scale
作者: Habarulema J.B. ; Katamzi Z.T. ; Yizengaw E. ; Yamazaki Y. ; Seemala G.
刊名: Geophysical Research Letters
ISSN: 0094-8957
EISSN: 1944-8688
出版年: 2016
卷: 43, 期: 13 起始页码: 6678
结束页码: 6686
语种: 英语
英文关键词: low-latitude electrodynamics
; poleward and equatorward TIDs
Scopus关键词: Electrodynamics
; Geomagnetism
; Ionosphere
; Geomagnetic equator
; Geomagnetic storm
; Global Navigation Satellite Systems
; Low latitudes
; Poleward and equatorward TIDs
; Simultaneous observation
; Total electron content
; Traveling ionospheric disturbances
; Storms
; aurora
; electrodynamics
; electron density
; equatorial dynamics
; geomagnetic storm
; GNSS
; ionosphere
; latitudinal gradient
; magnetometer
; polar region
; Africa
; Asia
; South America
英文摘要: We report on the first simultaneous observations of poleward and equatorward traveling ionospheric disturbances (TIDs) during the same geomagnetic storm period on a global scale. While poleward propagating TIDs originate from the geomagnetic equator region, equatorward propagating TIDs are launched from the auroral regions. On a global scale, we use total electron content observations from the Global Navigation Satellite Systems to show that these TIDs existed over South American, African, and Asian sectors. The American and African sectors exhibited predominantly strong poleward TIDs, while the Asian sector recorded mostly equatorward TIDs which crossed the geomagnetic equator to either hemisphere on 9 March 2012. However, both poleward and equatorward TIDs are simultaneously present in all three sectors. Using a combination of ground-based magnetometer observations and available low-latitude radar (JULIA) data, we have established and confirmed that poleward TIDs of geomagnetic equator origin are due to ionospheric electrodynamics, specifically changes in E × B vertical drift after the storm onset. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978176859&doi=10.1002%2f2016GL069740&partnerID=40&md5=94adcedde4c20e33b06ba91aa5de42c6
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9920
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: South African National Space Agency (SANSA) Space Science, Hermanus, South Africa
Recommended Citation:
Habarulema J.B.,Katamzi Z.T.,Yizengaw E.,et al. Simultaneous storm time equatorward and poleward large-scale TIDs on a global scale[J]. Geophysical Research Letters,2016-01-01,43(13).