Physics
Scientific paper
Mar 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3706102m&link_type=abstract
Geophysical Research Letters, Volume 37, Issue 6, CiteID L06102
Physics
7
Magnetospheric Physics: Radiation Belts, Magnetospheric Physics: Magnetosphere: Inner, Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Magnetospheric Physics: Energetic Particles: Trapped, Magnetospheric Physics: Energetic Particles: Precipitating
Scientific paper
A rapid loss of energetic (>230 keV) electrons from the outer radiation belt was observed with the GPS constellation between 1430 and 1730 UTC on 7 May 2007. The rapid loss occurred from 4 < L* < 6 over all measured energies above 230 keV. Currently accepted rapid loss mechanisms include magnetopause shadowing and/or outward diffusion, and precipitation to the atmosphere due to wave-particle interactions. Here the loss timescale is ˜2 hr, and the magnetopause is near L = 8, which requires unrealistically high outward diffusion rates. Current estimates of the loss timescales associated with EMIC waves, plasmaspheric hiss and whistler-mode chorus are too long, even in combination, to explain the observed losses inside L* $\simeq$ 6.
Cayton Thomas E.
Friedel Reiner H. W.
Morley Steven K.
Noveroske E.
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