Causes of HF Backscatter Loss During Large Geomagnetic Storms: Comparisons between Northern and Southern Hemisphere SuperDARN Radars

Julie Louise Currie, RMIT Univeristy, SPACE Research Centre, Melbourne, VIC, Australia, Colin L Waters, University of Newcastle, Department of Mathematical and Physical Sciences, Callaghan, Australia, Frederick W Menk, University of Newcastle, Callaghan, NSW, Australia and Murray D Sciffer, University of Newcastle, English Language and Foundation Studies Centre, Callaghan, Australia