HR: 0830h
AN: SM41C-0580    [PDF]
TI: Azimuthal Properties of Pc3-5 ULF Waves at Geosynchronous Orbit: GOES Results
AU: * Fraser, B J
EM: brian.fraser@noaa.gov
AF: NOAA/SEC, 325 Broadway, Boulder, CO 80305 United States
AU: Singer, H J
EM: howard.singer@noaa.gov
AF: NOAA/SEC, 325 Broadway, Boulder, CO 80305 United States
AB: Since late 2001 four and sometimes five NOAA GOES satellites have been operating at geosynchronous orbit. For example, in September 2001 GOES 8 was located at 74.9 degrees West, GOES 12 at 89.9 degrees West, GOES 11 at 108.7 degrees West and GOES 10 at 134.5 degrees West. This range of 60 degrees in longitudinal coverage with adjacent satellite pair spacing of the order of 15-27 degrees provides a unique geosynchronous satellite chain of magnetometers, ideal for the study of the azimuthal properties of Pc3-5 \(1-100mHz\) ultra-low frequency \(ULF\) waves. At synchronous orbit these waves may be observed as field line resonances, compressional cavity or waveguide mode resonances, or as propagating waves for the higher frequency Pc3 waves. Results will be presented on the spatial extent and azimuthal wave numbers of the various wave types seen in order to identify modes seen at both storm and quiet times.
DE: 2731 Magnetosphere--outer
DE: 2752 MHD waves and instabilities
DE: 2778 Ring current
SC: SPA - Magnetospheric Physics [SM]
MN: 2003 Fall Meeting