HR: 0800h
AN: SM31B-0412    [Abstracts]
TI: Interball Observations of Flux Transfer Events
AU: * Korotova, G I
EM: korotova@excite.com
AF: IZMIRAN, Moscow Region, Troitsk, 142190 Russian Federation
AU: Sibeck, D G
EM: david.g.sibeck@nasa.gov
AF: NASA/GSFC, 8800 Greenbelt Rd, Greenbelt, MD 20723 United States
AU: Rosenberg, T
EM: rosenberg@uarc.umd.edu
AF: University of Maryland, University Blvd, College Park, MD 20742 United States
AU: Petrov, V I
EM: petrov@izmiran.rssi.ru
AF: IZMIRAN, Moscow Region, Troitsk, 142190 Russian Federation
AU: Styazhkin, V I
EM: styazhkin@izmiran.rssi.ru
AF: IZMIRAN, Moscow Region, Troitsk, 142190 Russian Federation
AB: We present the results of a statistical study of 870 flux transfer events (FTEs) observed by the Interball-1 spacecraft. Events at low-latitudes show a marked tendency to occur for southward IMF orientations, while those at cusp latitudes occur for both northward and southward IMF orientations. Events at high latitudes tend to occur for either strongly parallel or antiparallel magnetosheath and magnetospheric magnetic field orientations, suggesting origins via antiparallel reconnection at latitudes above and below the cusp. Almost all events move antisunward. Average event amplitudes diminish with distance from the subsolar point, primarily due to the presence of many small amplitude events on the magnetotail flanks. Initial results suggest that event sequences combining direct and reverse signatures tend to occur in the vicinity of the predicted reconnection line. Prolonged sequences of multiple events are common in the observations- we will examine the conditions favoring these events.
DE: 2724 Magnetopause and boundary layers
DE: 2784 Solar wind/magnetosphere interactions
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005