Do substorms energise the ring current?

Jasmine Kaur Sandhu1, Jonathan Rae2, Mervyn P Freeman3, Colin Forsyth4, Caitriona Mary Jackman5 and Mai Mai Lam3, (1)University College London, Mullard Space Science Laboratory, Dorking, United Kingdom, (2)University College London, Mullard Space Science Laboratory, London, United Kingdom, (3)British Antarctic Survey, Cambridge, United Kingdom, (4)Mullard Space Science Lab., Dorking, United Kingdom, (5)University of Southampton, Physics and Astronomy, Southampton, SO14, United Kingdom