Physics
Scientific paper
Jun 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3111807o&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 11, CiteID L11807
Physics
17
Ionosphere: Plasma Convection, Ionosphere: Current Systems (2708), Ionosphere: Ionosphere/Magnetosphere Interactions (2736), Magnetospheric Physics: Auroral Phenomena (2407), Magnetospheric Physics: Magnetopause, Cusp, And Boundary Layers
Scientific paper
In this paper we present high-resolution observations by the EISCAT Svalbard Radar of the localized ionospheric flow response due to one single flux transfer event and the relative location of a poleward moving auroral form. In a fast scan mode the radar was tracking a 50-60 km wide channel of westward flow in the cusp region. This flow channel was surrounded by flow running in the opposite direction. At the poleward edge of the narrow flow channel a poleward moving auroral form was situated, consistent with the auroral form being the signature of an upward Birkeland current filament. Our observations can be interpreted in terms of the Southwood [1985, 1987] flux transfer model, and the FTE twin-cell flow pattern appears to be a ripple onto the larger-scale background convection.
Carlson Herbert C.
Moen Joran
Oksavik Kjellmar
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