Mapping of magnetospheric electric fields from Cluster into ionospheric convection from SuperDARN using the Tsyganenko field model.
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Date
2010
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Abstract
The data from Super Dual Auroral Radar Network (SuperDARN) radar and Cluster was
used to investigate whether the processes observed by SuperDARN radar in the highlatitude
ionosphere leads to the processes that take place in the magnetosphere. SuperDARN
is a global network of high-frequency coherent-scatter radars operating in the
northern and southern hemispheres and these radars are capable of observing backscatter
from ionospheric irregularities. The Tsyganenko T96 field model was used to map the
footprint of the Cluster spacecraft into the ionosphere. The SuperDARN radar data analysis
software was used to generate time series, fi eld of view and convection plots. The
data from Syowa South, Syowa East SuperDARN radars, Advance Composition Explorer
(ACE) and Cluster spacecrafts was used in this study. Two events were found and
discussed, an event on 09 August 2002 and another event on 30 September 2002. The
SuperDARN radar and Cluster data for these events were compared. When a change in
electric field was observed by Cluster, SuperDARN radar observed a change in the convection
flow. There was a time delay between the change in the electric fi eld and the change
in convection flow.
Description
Thesis (M.Sc.)-University of KwaZulu-Natal, Westville, 2010.
Keywords
Radar transmitters., Cluster theory (Nuclear physics), Theses--Physics.