2011 SuperDARN Workshop       

Solar wind-magnetosphere coupling, substorms, and ramifications for the ionospheric convection pattern

S.E. Milan (1), A. Grocott (1,2), S.M. Imber (3), and B. Hubert (4)
(1) University of Leicester, UK
(2) NIPR, Japan
(3) Goddard Space Flight Center, USA
(4) University of Liege, Belgium

abstract. We describe the general characteristics of the evolution of the auroral, ionospheric, and magnetotail signatures of magnetospheric substorms and geomagnetic storms. We present results of superposed epoch analyses of 2000 substorms, identified by Frey et al. (2004), of Imager for Magnetopause-to-Aurora Global Exploration (IMAGE) auroral images, Super Dual Auroral Radar Network (SuperDARN) ionospheric flows, and other measures of magnetospheric disturbance. In particular we examine the effect of the onset latitude of the subsequent evolution of the substorms and geomagnetic storms. The results are interpreted within the expanding/contracting polar cap paradigm (ECPC), and the ramifications for the ionospheric convection pattern are discussed.

Sakaguchi KaoriNICT Japan