Plasmaspheric mass and electron densities during a prolonged disturbed interval

Details Plasmaspheric mass and electron densities during a prolonged disturbed interval Plasmaspheric mass and electron densities during a prolonged disturbed interval

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm41a1163m&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SM41A-1163

Physics

2730 Magnetosphere: Inner, 2768 Plasmasphere, 7867 Wave/Particle Interactions (2483, 6984), 7954 Magnetic Storms (2788), 7984 Space Radiation Environment

Scientific paper

The inner magnetosphere plasma environment can be rather disturbed during and after magnetic storms. Recent discoveries include plasma structures described as plumes, channels, notches, and shoulders. Observational data usually come from spacecraft and ground-based VLF whistler techniques. However, VLF receivers can also be used to monitor artificially produced whistler-mode waves that propagate in field-aligned ducts and that provide information on the electron density near the equatorial plane. Furthermore, ground magnetometers can be used to detect ULF field line resonances whose frequency relates to the plasma mass density near the equatorial plane. We describe experiments using magnetometer arrays and VLF receivers to measure mass and electron density in the inner magnetosphere during an extended disturbed interval in October 2002. Comparison with IMAGE EUV images allows intercalibration of the experiments. We thus compare VLF-derived electron densities and ULF mass densities with EUV images to obtain estimates of the temporal variation in the He+ and O+ concentrations under disturbed conditions.

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