HR: 0830h
AN: SM11C-1165 [PDF]
TI: Evolution and Characteristics of Global Pc5 observations of ULF waves During a High Solar Wind Speed
Event.
AU: * Rae, I J
EM: jrae@space.ualberta.ca
AF: University of Alberta, Dept. of Physics, University of Alberta,, Edmonton., AB T6G 2J1.
Canada
AU: Donovan, E F
EM: eric@phys.ucalgary.ca
AF: University of Calgary, Dept of Physics and Astronomy, Calgary, AB T2N 1N4
Canada
AU: Fenrich, F R
EM: frances@space.ualberta.ca
AF: University of Alberta, Dept. of Physics, University of Alberta,, Edmonton., AB T6G 2J1.
Canada
AU: Mann, I R
EM: imann@space.ualberta.ca
AF: University of Alberta, Dept. of Physics, University of Alberta,, Edmonton., AB T6G 2J1.
Canada
AU: Watt, C E
EM: cwatt@space.ualberta.ca
AF: University of Alberta, Dept. of Physics, University of Alberta,, Edmonton., AB T6G 2J1.
Canada
AU: Bale, S D
EM: bale@ssl.berkeley.edu
AF: Space Sciences Laboratory, University of California, Berkeley, CA 94720 United States
AU: Taylor, M G
EM: mggtt@lanl.gov
AF: Los Alamos National Laboratory, P.O. Box 1663, Mail stop D466, Los Alamos, NM 87545 United States
AU: Cowley, S W
EM: swhc1@ion.le.ac.uk
AF: University of Leicester, Dept. of Physics, University of Leicester, University Road, Leicester, LE1
7RH
United Kingdom
AU: Reme, H
EM: Henri.Reme@cesr.fr
AF: Centre d'tude Spatiale des Rayonnements, Dpartement systme solaire
9 avenue du colonel Roche, Tolouse, 31028
France
AU: Lavraud, B
EM: Benoit.Lavraud@cesr.fr
AF: Centre d'tude Spatiale des Rayonnements, Dpartement systme solaire
9 avenue du colonel Roche, Tolouse, 31028
France
AU: Wild, J A
EM: jaw11@ion.le.ac.uk
AF: University of Leicester, Dept. of Physics, University of Leicester, University Road, Leicester, LE1
7RH
United Kingdom
AB:
We present an interval of long-lasting Global Pc5 oscillations during a high solar wind speed event, during which there is an
excellent conjunction between the Cluster and Polar spacecraft on the dusk flank, and ground-based instrumentation.
Virtually monochromatic large amplitude highly-polarised pulsations were observed by the CANOPUS magnetometer chain at dusk
for many hours, which we identify as being a field line resonance. Many radars of the SuperDARN HF network observed clear
pulsations of similar frequencies as these radars rotated into the dusk sector ionosphere. The pulsations are observed in
geosynchronous data at all local times. We analyse the solar wind data to verify the source of these oscillations. Cluster
field and plasma instruments indicate Kelvin-Helmholtz type activity on the magnetopause and Polar observed oscillations in
both electric- and magnetic fields. We analyse these fluctuations in local field-aligned coordinates and calculate the
poynting fluxes along and perpendicular to the field to fully understand the nature of these oscillations. We present these
results in terms of previous studies and discuss possible source mechanisms.
DE: 2487 Wave propagation (6934)
DE: 2736 Magnetosphere/ionosphere interactions
DE: 2784 Solar wind/magnetosphere interactions
SC: SPA - Magnetospheric Physics [SM]
MN: 2003 Fall Meeting