Electromagnetic Ion Cyclotron Waves, Plasma Drainage Plumes and Geomagnetic Storms

Details Electromagnetic Ion Cyclotron Waves, Plasma Drainage Plumes and Geomagnetic Storms Electromagnetic Ion Cyclotron Waves, Plasma Drainage Plumes and Geomagnetic Storms

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm41c..02f&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SM41C-02

Statistics

2731 Magnetosphere: Outer, 2772 Plasma Waves And Instabilities (2471), 2774 Radiation Belts, 2778 Ring Current, 2788 Magnetic Storms And Substorms (7954)

Scientific paper

It is known that electromagnetic ion cyclotron (EMIC) waves make an important contribution to localized ring current loss during geomagnetic storms, and also radiation belt electron losses . More recently it has been shown that EMIC waves observed by the GOES and POLAR satellites are associated with extended plasma drainage plumes seen in the plasmasphere and magnetosphere by the IMAGE-EUV instrument, and supported by LANL geostationary satellite thermal energy plasma data. In this study we will investigate the properties of EMIC waves seen by the fluxgate magnetometers onboard the CRRES elliptically orbiting satellite and the GOES geostationary satellites during pre-storm quiet times, and the main and recovery phases of geomagnetic storms. Also considered is the relationship between EMIC waves and associated plasma drainage plumes observed in IMAGE-EUV imaging data, CRRES plasma wave experiment electron density data and LANL satellite thermal energy plasma data. Two individual case studies and statistics over 24 selected storms will be presented. The results will provide new results on conditions in the magnetosphere under which EMIC wave generation occurs.

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