Paper#: 119
Poster #:
Session Name: Workshop 1A: High Latitude Processing
Room: West Ballroom
Day: Monday
Time: 10:30-10:55 a.m.
Abstract Title: Substorm Development as Seen through Coordinated Multi-instrument Observations
PresentSurname: Lu, G.
All Authors: G. Lu, E. Donovan, T. Nagai, J. Sigwarth, L. Frank
Abstract : We investigate the development of an isolated substorm based on observations from multiple ground and space based instruments. The onset of the substorm and its subsequent expansion phase were well monitored by the global auroral imagers from the Polar satellite. The CANOPUS meridian scan photometers showed that the equatorward auroral boundary reached as low as 63 degree magnetic latitude at the time of the substorm onset. The Geotail satellite located at 30 Re tailward of Earth near the equatorial plane observed fast earthward flows along the magnetic field lines, accompanied by a bipolar magnetic perturbation. In addition, a global network of ground magnetometers provided good measurements of ionospheric electrojets during the substorm. We will construct a globally coherent picture of the substorm processes in light of various observations, with a particular emphasis on the interconnection between the low-altitude ionosphere and the distant equatorial magnetosphere.