HR: 1340h
AN: SM43C-1544    [Abstracts]
TI: Cross-Phase Investigation of a Field Line Resonance and a Discrete Continuous Oscillation in the Solar Wind
AU: * Fenrich, F R
EM: ffenrich@ualberta.ca
AF: Department of Physics, Room #238 CEB, University of Alberta, Edmonton, AB T6G 2G7, Canada
AU: Waters, C
EM: colin.waters@newcastle.edu.au
AF: School of Mathematical and Physical Sciences, The University of Newcastle, New South Wales, 2308, Australia
AB: Discrete field line resonances (FLRs) are a common occurrence in the magnetosphere and are readily observed with the Super Dual Auroral Radar Network (SuperDARN). The source of the stable, monochromatic FLR frequencies is still an unresolved problem. Recent work has presented some evidence that discrete continuous oscillations in the solar wind directly drive magnetospheric FLRs but these studies have concentrated primarily on frequency and amplitude comparisons. Phase is an additional parameter which can be exploited. If discrete solar wind oscillations are the source driving FLRs then they should exhibit phase coherence with the FLR for the duration of the wave event. We present Fourier Transform and wavelet cross-phase measurements to determine the degree of phase coherence between an FLR observed with the SuperDARN Kodiak radar and oscillations in solar wind parameters.
DE: 2149 MHD waves and turbulence (2752, 6050, 7836)
DE: 2700 MAGNETOSPHERIC PHYSICS (6939)
DE: 2736 Magnetosphere/ionosphere interactions (2431)
DE: 2752 MHD waves and instabilities (2149, 6050, 7836)
DE: 2784 Solar wind/magnetosphere interactions
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting