|
|
 |
|
|
Ann. Geophys., 18, 1088-1096, 2000
www.ann-geophys.net/18/1088/2000/
© European Geosciences Union 2000
Plasma convection at high latitudes using the EISCAT VHF and ESR incoherent scatter radars
J. M. Holt1 and A. P. van Eyken2
1MIT Haystack Observatory, Route 40, Westford MA 01886, USA
2EISCAT Scientific Association, N-9020 Tromsdalen, Norway
Correspondence to: A. P. van Eyken
e-mail: tony@eiscat.uit.no
Abstract. The recent availability of substantial data
sets taken by the EISCAT Svalbard Radar allows several important tests to be
made on the determination of convection patterns from incoherent scatter radar
results. During one 30-h period, the Svalbard Radar made 15 min scans combining
local field aligned observations with two, low elevation positions selected to
intersect the two beams of the Common Programme Four experiment being
simultaneously conducted by the EISCAT VHF radar at Tromsø. The common volume
results from the two radars are compared. The plasma convection velocities
determined independently by the two radars are shown to agree very closely and
the combined three-dimensional velocity data used to test the common assumption
of negligible field-aligned flow in this regime.
Key words: Ionosphere (auroral ionosphere; polar
ionosphere) - Magnetospheric physics (plasma convection)
Full Article in PDF (524 KB) |
|
|
