Physics
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3414110k&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 14, CiteID L14110
Physics
49
Ionosphere: Equatorial Ionosphere, Ionosphere: Ionospheric Dynamics, Ionosphere: Electric Fields (2712), Ionosphere: Ionosphere/Atmosphere Interactions (0335)
Scientific paper
We investigate the longitudinal distribution of the vertical E × B drift velocity and ion density in the low-latitude ionosphere using the first Republic of China Satellite (ROCSAT-1) data acquired during 1999-2004. The ROCSAT-1 observations during daytime demonstrate the presence of the longitudinally periodic patterns of the vertical E × B drift and plasma density on the topside F region (600 km). The four longitude sectors where the peaks in the plasma density are found are coincident with the peaks in the E × B drift. This observation may indicate the association of the large-scale longitudinal density structure with the daytime E-region dynamo electric field. The density structure exists before the occurrence of the pre-reversal enhancement (PRE) and therefore the PRE is not directly related to this phenomenon.
England Scott L.
Kelley Michael C.
Kil Hyosub
Min Kyoung-Wook
Oh Seung Joon
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