Physics
Scientific paper
Nov 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.3277l&link_type=abstract
Geophysical Research Letters, Volume 26, Issue 21, p. 3277-3280
Physics
13
Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Magnetospheric Physics: Mhd Waves And Instabilities, Magnetospheric Physics: Plasma Waves And Instabilities, Magnetospheric Physics: Instruments And Techniques
Scientific paper
Observations of ULF field line resonances detected by seven magnetometers in the Canadian Auroral Network for the OPEN Program Unified Study (CANOPUS) array were used to estimate equatorial cold plasma mass densities in and around the plasmatrough region as a function of both radial distance and time of day. The magnetometers ranged in latitude from Pinawa (L=4.3) to Rankin Inlet (L=12.4). The equatorial cold plasma mass densities were estimated using the T89 magnetic field model, an R-4 plasma density distribution function and the wave equation from cold plasma MHD theory. These ground based plasma mass density estimates were compared to those obtained from the CRRES spacecraft. Typical values obtained from the ground based measurements were ~2H+cm-3 at L~10 to ~10H+cm-3 at L~7. The data recorded on 3 October, 1990 showed excellent agreement with the spacecraft observations for 8.5
Fraser Brian J.
Loto'aniu T. M.
Samson John C.
Waters Colin L.
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