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Detailed Reference Information |
Oksavik, K., Moen, J. and Carlson, H.C. (2004). High-resolution observations of the small-scale flow pattern associated with a poleward moving auroral form in the cusp. Geophysical Research Letters 31: doi: 10.1029/2004GL019838. issn: 0094-8276. |
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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. |
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Abstract |
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Keywords
Ionosphere, Plasma convection, Ionosphere, Current systems, Ionosphere, Ionosphere/magnetosphere interactions, Magnetospheric Physics, Auroral phenomena, Magnetospheric Physics, Magnetopause, cusp, and boundary layers |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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