Publication Date:
2011-03-31
Description:
We examine and simulate the electron radiation belt dropout event on 9 October 1990. CRRES observations show that significant depletions of electron fluxes occurred at energies ∼0.1–1.0 MeV beyond 6 RE and at energies 〉 ∼0.4 MeV within 6 RE. The three-dimensional kinetic radiation belt model STEERB is used to simulate this dropout event, taking into account the magnetopause shadowing, adiabatic transport, radial diffusion, and plume and chorus wave-particle interactions. Our results show that STEERB code can basically reproduce the observed depletion of ∼0.1–1.0 MeV electron fluxes throughout the outer radiation belt, suggesting that the competition and combination of all these physical mechanisms can well explain this electron radiation belt dropout event.
Print ISSN:
0094-8276
Electronic ISSN:
1944-8007
Topics:
Geosciences
,
Physics