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Post sunset equatorial spread-F at Kwajalein and interplanetary magnetic field
Rastogi, R. G.1; Chandra, H.1; Janardhan, P.1; Reinisch, B. W.2,3; Bisoi, Susanta Kumar4
2017-10-15
Source PublicationADVANCES IN SPACE RESEARCH
Volume60Issue:8Pages:1708-1715
AbstractWe connect the time sequence of changes in the IMF-Bz to the development of spread-F at an equatorial station Kwajalein on three different nights in November 2004, one during a geomagnetic quiet period and other two during geomagnetic disturbed periods. The chosen days show clear and smooth variations of IMF-Bz without any large fluctuations thereby enabling one to correlate changes in equatorial spread-F with corresponding changes in IMF-Bz. It is shown that a slow and continuous increase in the IMF-Bz over a duration of few hours has a similar effect on the equatorial ionosphere as of a sudden northward turning of the IMF-Bz in causing an electric field through the polar region and then to the equator. We conclude that the Spread-F at equatorial and low latitudes are due to echoes from ionization irregularities that arise due to the plasma instabilities generated by an eastward electric field on the large plasma density gradient in or below the base of the F-layer during any period of the night time along with the gravity driven Rayleigh-Taylor instability. (C) 2017 COSPAR. Published by Elsevier Ltd. All rights reserved.
SubtypeArticle
KeywordEquatorial Ionosphere Equatorial Spread-f Geomagnetic Storms
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.asr.2017.06.020
WOS KeywordTOTAL ELECTRON-CONTENT ; RADAR OBSERVATIONS ; IRREGULARITIES ; REGION ; IONOSPHERE ; REVERSAL ; BUBBLES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
WOS SubjectAstronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS IDWOS:000412620000012
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/20104
Collection光学天文研究部
Affiliation1.Phys Res Lab, Ahmadabad 380009, Gujarat, India
2.Lowell Digisonde Int, Lowell, MA 01854 USA
3.Univ Massachusetts, Ctr Atmospher Res, Lowell, MA USA
4.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Rastogi, R. G.,Chandra, H.,Janardhan, P.,et al. Post sunset equatorial spread-F at Kwajalein and interplanetary magnetic field[J]. ADVANCES IN SPACE RESEARCH,2017,60(8):1708-1715.
APA Rastogi, R. G.,Chandra, H.,Janardhan, P.,Reinisch, B. W.,&Bisoi, Susanta Kumar.(2017).Post sunset equatorial spread-F at Kwajalein and interplanetary magnetic field.ADVANCES IN SPACE RESEARCH,60(8),1708-1715.
MLA Rastogi, R. G.,et al."Post sunset equatorial spread-F at Kwajalein and interplanetary magnetic field".ADVANCES IN SPACE RESEARCH 60.8(2017):1708-1715.
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