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Author Aggson, T. L. ♦ Pfaff, R. F. ♦ Maynard, N. C.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ IONOSPHERE ♦ PLASMA DENSITY ♦ FLUCTUATIONS ♦ ELECTRIC FIELDS ♦ EQUATOR ♦ BUBBLES ♦ SATELLITES ♦ REMOTE SENSING
Abstract Vector electric field measurements from the San Marco D satellite are utilized to investigate the bifurcation of ionospheric plasma depletions (sometimes called {open_quotes}bubbles{close_quotes}) associated with nightside equatorial spread F. These depletions are identified by enhanced upward ExB convection in depleted plasma density channels in the nighttime equatorial ionosphere. The in situ determination of the bifurcation process is based on dc electric field measurements of the bipolar variation in the zonal flow, westward and eastward, as the eastbound satellite crosses isolated signatures of updrafting plasma depletion regions. The authors also present data in which more complicated regions of zonal velocity variations appear as the possible result of multiple bifurcations of updrafting equatorial plasma bubbles. 10 refs., 7 fig.
ISSN 01480227
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-03-01
Publisher Place United States
Journal Journal of Geophysical Research
Volume Number 101
Issue Number A3


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