Automated detection of magnetospheric modes to investigate solar wind-magnetosphere coupling

The magnetosphere is known to respond to solar wind driving by displaying a variety of behaviours known as magnetospheric modes, including the substorm cycle, sawtooth intervals, and steady magnetospheric convection. Other behaviour includes geomagnetic storms and periods of relative magnetospheric quiescence associated with northward interplanetary magnetic field. There have been many studies of the changes in magnetospheric open flux content during different modes to investigate the role of magnetic reconnection at the magnetopause and in the magnetotail in determining the magnetospheric response. In this study we attempt an automated recognition of different modes by their characteristic signatures in geomagnetic indices and other magnetospheric state parameters, including open flux. This allows us to investigate the interplanetary conditions that give rise to different behaviours.