HR: 1340h
AN: SM43A-1143    [Abstracts]
TI: Use of substorm onset observations by IMAGE-FUV for THEMIS ground-based system analysis
AU: * Frey, S
EM: sfrey@ssl.berkeley.edu
AF: Space Sciences Laboratory, University of California at Berkeley, 7 Gauss Way, Berkeley, CA 94720 United States
AU: Frey, H
AF: Space Sciences Laboratory, University of California at Berkeley, 7 Gauss Way, Berkeley, CA 94720 United States
AU: Mende, S
AF: Space Sciences Laboratory, University of California at Berkeley, 7 Gauss Way, Berkeley, CA 94720 United States
AU: Angelopoulos, V
AF: Space Sciences Laboratory, University of California at Berkeley, 7 Gauss Way, Berkeley, CA 94720 United States
AU: Donovan, E
AF: Department of Physics and Astronomy, University of Calgary, 2500 University Drive, N.W., Calgary, AB T2N 1N4 Canada
AB: Over the first 2.5 years of operation, the FUV instrument on the IMAGE spacecraft observed more than 2400 substorm onsets in the Northern Hemisphere. The observations confirm earlier results of statistical studies in terms of a median substorm onset location at 2300 hours MLT and 66.4 degrees magnetic latitude. The list is published as an electronic supplement to a publication in the Journal of Geophysical Research [Frey et al., 2004]. The list can easily be searched for onsets close to certain ground stations or at specific magnetic latitudes or local times. As one example of such use we demonstrate how the probability of onset observation was determined for the ground-based automatic observatories of the THEMIS (Time History of Events and Macroscale Interactions during Substorms) project.
DE: 2407 Auroral ionosphere (2704)
DE: 2455 Particle precipitation
DE: 2788 Storms and substorms
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting