2011 SuperDARN Workshop       

Large-scale irregular undulations of the ionosphere as observed by the Falkland Islands SuperDARN radar

S.E. Milan (1), A. Grocott (1), M. Lester (1), T.K. Yeoman (1), M.P. Freeman (2), and G. Chisham (2)
(1) University of Leicester, UK
(2) British Antarctic Survey, Cambridge, UK

abstract. The Falkland Islands SuperDARN radar observes large-scale undulations of the ionosphere. These manifest themselves as motions of the ground scatter region towards or away from the radar, associated with positive or negative Doppler-shifts, respectively. The motions are sometimes isolated in time, or appear quasi-periodically with time-scales of several hours. At present it is unclear what causes these undulations. This presentation will summarize the characteristics of the undulations and discuss possible causes.

Sakaguchi KaoriNICT Japan