Deducing Magnetospheric Structure From ISTP Spacecraft Observations of Enhanced Escaping Terrestrial Continuum Radiation and Kilometric Continuum Radiation

Details Deducing Magnetospheric Structure From ISTP Spacecraft Observations of Enhanced Escaping Terrestrial Continuum Radiation and Kilometric Continuum Radiation Deducing Magnetospheric Structure From ISTP Spacecraft Observations of Enhanced Escaping Terrestrial Continuum Radiation and Kilometric Continuum Radiation

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm31b11a&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SM31B-11

Physics

2730 Magnetosphere--Inner, 2740 Magnetospheric Configuration And Dynamics, 2760 Plasma Convection, 2768 Plasmasphere, 2772 Plasma Waves And Instabilities

Scientific paper

Enhanced escaping terrestrial continuum radiation and kilometric continuum radiation are believed to be due to injected electrons from the plasmasheet drifting around the earth eastward and impinging on portions of the plasmasphere and magnetosphere where steep density gradients occur. Electrostatic emissions at the local electron plasma frequency are mode converted to electromagnetic radiation that propagates out unless or until it encounters a region more dense than where it was generated. The GEOTAIL and POLAR Plasma Wave Instruments (PWIs) and the WIND Radio Science Experiment (WAVES) on the ISTP spacecraft primarily when near the Earth have frequently detected these emissions that contain much narrowband filamentary and fine structure. Occasionally narrowband filaments lasting many hours have been observed. By comparing the appearance of these emissions from two or more spacecraft we attempt to deduce remotely the structure of the plasmasphere and magnetosphere. Some of the structure observed we believe can be explained by the bulges, ducts, and irregularities known to exist in the plasmasphere. We will compare our deduced structures with those previously detected on CRRES and those now detected by IMAGE.

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