Relativistic electron dropout events as observed concurrently by SAMPEX and GOES sensors: Relationships to plasmaspheric and ionospheric conditions

Details Relativistic electron dropout events as observed concurrently by SAMPEX and GOES sensors: Relationships to plasmaspheric and ionospheric conditions Relativistic electron dropout events as observed concurrently by SAMPEX and GOES sensors: Relationships to plasmaspheric and ionospheric conditions

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsm23c..04b&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #SM23C-04

Physics

2716 Energetic Particles, Precipitating, 2720 Energetic Particles, Trapped, 2784 Solar Wind/Magnetosphere Interactions, 2788 Storms And Substorms

Scientific paper

Recent attention has focused upon abrupt and deep "dropouts" of energetic electron fluxes at geostationary orbit as seen by GOES particle detectors. We have used data from SAMPEX sensors measuring E>2MeV electrons and concurrent data from GOES in a similar energy range to study such dropout events. We have identified 27 major events from 1998 to 2003 where SAMPEX and GOES saw corresponding sharp, deep relativistic electron deceases. In most instances SAMPEX data indicated dropouts extending across a broad swath of L-shells, often down to L~~3.0. We have compared these radiation belt signatures with penetration electric field data from the Millstone Hill radar system and the DMSP spacecraft and with total electron content (TEC) enhancement measurements made using the Global Positioning System (GPS). Such multi-platform data show the intimate relationships that exist between radiation belt, plasmaspheric, and ionospheric properties during strong geomagnetic events.

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