IMAGE-RPI Measurements of Plasmaspheric Electron Density Profiles and Comparisons With Plasmaspheric Models and EUV Observations

Details IMAGE-RPI Measurements of Plasmaspheric Electron Density Profiles and Comparisons With Plasmaspheric Models and EUV Observations IMAGE-RPI Measurements of Plasmaspheric Electron Density Profiles and Comparisons With Plasmaspheric Models and EUV Observations

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm21a07g&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SM21A-07

Physics

2730 Magnetosphere--Inner, 2740 Magnetospheric Configuration And Dynamics, 2768 Plasmasphere, 2788 Storms And Substorms

Scientific paper

The Radio Plasma Imager (RPI) on the IMAGE spacecraft is providing high resolution plasma wave measurements throughout its orbit, revealing structural details around times of plasmasphere passages. In situ measurements of electron number density (ne) based on plasma thermal emissions and cutoffs of electromagnetic radiation during these passages have been obtained for December of 2000. Most of these passages were through the dawn-dusk sectors (5-10 and 17-21 MLT). The linear fits of log(ne) versus L shell show an average electron density profile that lies between the model profiles of Carpenter and Anderson [1992] and Gallagher et al. [2000]. Several cases of enhancement or suppression of electron number densities across narrow magnetic longitude ranges were also found. These density deviations have been compared with outer plasmasphere measurements made by the IMAGE EUV imager and may be attributed to radial, co-rotating structures. Carpenter, D. L. and R. R. Anderson, J. Geophys. Res., 97, 1097, 1992. Gallagher, D. L., P. D. Craven, and R. H. Comfort, J. Geophys. Res., 105, 18819, 2000.

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