HR: 1340h
AN: SM33A-1108    [Abstracts]
TI: Extreme Magnetic Field Variations Observed at Geosynchronous Orbit
AU: * Loto'aniu, P T
EM: paul.lotoaniu@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, 216 UCB, Boulder, CO 80309, United States
AU: * Loto'aniu, P T
EM: paul.lotoaniu@noaa.gov
AF: Space Environment Center, National Oceanic and Atmospheric Administration, 325 Broadway, Boulder, CO 80305, United States
AU: Singer, H J
EM: howard.singer@noaa.gov
AF: Space Environment Center, National Oceanic and Atmospheric Administration, 325 Broadway, Boulder, CO 80305, United States
AB: Magnetic field signatures observed at geosynchronous orbit provide important information for diagnosis of solar- terrestrial conditions. For this reason many studies have utilized data from the Geosynchronous Operational Environmental satellites (GOES) magnetometers during both quiet and disturbed conditions. In spite of this significant body of work, there still remains considerable interest in quantifying the most extreme variations at geosynchronous orbit and identifying the responsible solar wind conditions. For example, there are times when extreme distortions of the field are observed in the transverse components, sometimes as large as 40 nT in the east-west component and 70 nT in the radial component with a 100 nT background field. These and other extreme perturbations will be reported on, as well as results examining background field variations in response to the solar wind and geomagnetic conditions.
DE: 2700 MAGNETOSPHERIC PHYSICS (6939)
DE: 2730 Magnetosphere: inner
DE: 2784 Solar wind/magnetosphere interactions
DE: 2788 Magnetic storms and substorms (7954)
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting