Comparisons of IMAGE RPI and EUV Observations of Longitudinal Electron Density Structures in the Plasmasphere

Details Comparisons of IMAGE RPI and EUV Observations of Longitudinal Electron Density Structures in the Plasmasphere Comparisons of IMAGE RPI and EUV Observations of Longitudinal Electron Density Structures in the Plasmasphere

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm11a0774g&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM11A-0774

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 launched March 25, 2000 is providing high resolution plasma wave measurements throughout its orbit. In situ measurements of electron number density based on plasma quasi-thermal noise emissions and cutoffs of electromagnetic radiation in 2000 have been screened. The plasma line seen in the passive RPI observations reveal longitudinal electron plasma structures around times of plasmasphere passage. Several cases of enhancement and suppression of electron number densities across narrow magnetic longitude ranges within the outer plasmasphere were found. These density structures appear to be associated with previously observed radial, co-rotating enhanced density finger-like structures seen in the global plasmasphere images made by the IMAGE EUV imager. In this paper, we will present cases of the plasma structures observed by RPI and show their correlation with features seen in corresponding EUV images.

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