HR: 1340h
AN: SM43A-1148    [Abstracts]
TI: IMF By and seasonal dependence of the electric field in the inner magnetosphere
AU: * Matsui, H
EM: hiroshi.matsui@unh.edu
AF: Space Science Center, University of New Hampshire, Morse Hall, Durham, NH 03824 United States
AU: Quinn, J M
EM: jack.quinn@unh.edu
AF: Space Science Center, University of New Hampshire, Morse Hall, Durham, NH 03824 United States
AU: Torbert, R B
EM: Roy.Torbert@unh.edu
AF: Space Science Center, University of New Hampshire, Morse Hall, Durham, NH 03824 United States
AU: Jordanova, V K
EM: vania.jordanova@unh.edu
AF: Space Science Center, University of New Hampshire, Morse Hall, Durham, NH 03824 United States
AU: Puhl-Quinn, P A
EM: pamela.puhlquinn@unh.edu
AF: Space Science Center, University of New Hampshire, Morse Hall, Durham, NH 03824 United States
AU: Paschmann, G
EM: goetz.paschmann@mpe.mpg.de
AF: Max-Planck-Institut fuer extraterrestrische Physik, P.O.Box 1603, Garching, D-85740 Germany
AB: It is known that the electric field pattern at high-latitudes depends on the polarity of the Y component of the interplanetary magnetic field (IMF By) and season. In this study we investigate the above relationships in the inner magnetosphere by using the perigee data from Cluster passing through the magnetic equator. The data consist of both components of the electric field perpendicular to the magnetic field obtained by the electron drift instrument (EDI). These data are sorted by polarities of IMF By and Bz and by seasons or hemispheres. The possible causes of the dependence of the electric fields on IMF By and seasons are discussed.
DE: 2712 Electric fields (2411)
DE: 2730 Magnetosphere--inner
DE: 2736 Magnetosphere/ionosphere interactions
DE: 2784 Solar wind/magnetosphere interactions
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting