Quantification of relativistic electron microburst losses during the GEM storms

TitleQuantification of relativistic electron microburst losses during the GEM storms
Publication TypeJournal Article
Year of Publication2004
AuthorsO’Brien, TP, Looper, MD, Blake, JB
JournalGeophysical Research Letters
Date Published02/2004
KeywordsLocal Loss due to VLF/ELF/EMIC Waves
AbstractBursty precipitation of relativistic electrons has been implicated as a major loss process during magnetic storms. One type of precipitation, microbursts, appears to contain enough electrons to empty the prestorm outer radiation belt in approximately a day. During storms that result in high fluxes of trapped relativistic electrons, microbursts continue for several days into the recovery phase, when trapped fluxes are dramatically increasing. The present study shows that this apparent inconsistency is resolved by observations that the number of electrons lost through microbursts is 10–100 times larger during the main phase than during the recovery phase of several magnetic storms chosen by the Geospace Environment Modeling (GEM) program.

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