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SAID/SAPS‐related VLF waves and the outer radiation belt boundary
Author(s) -
Mishin Evgeny,
Albert Jay,
Santolik Ondrej
Publication year - 2011
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2011gl049613
Subject(s) - substorm , hiss , van allen radiation belt , geophysics , plasmasphere , physics , electron , van allen probes , storm , radiation , magnetosphere , pitch angle , geomagnetic storm , ion , geology , computational physics , atmospheric sciences , plasma , meteorology , optics , solar wind , nuclear physics , quantum mechanics
We explore Cluster and CRRES observations of plasmaspheric broadband hiss‐like VLF emissions related with subauroral ion drifts/polarization streams (SAID/SAPS) to numerically simulate losses of energetic outer zone electrons due to wave‐particle interactions. These emissions represent a distinctive subset of substorm/storm‐related VLF activity in the region co‐located with substorm injected energetic ions. Significant values of pitch‐angle diffusion coefficients suggest that SAID/SAPS‐related VLF waves could be responsible for the alteration of the outer radiation belt boundary during (sub)storms.