Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 41, Issue 2, Pages 229-235Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1002/2013GL058912
Keywords
electron radiation belt; relativistic electron acceleration; wave-particle interaction; chorus wave; Van Allen Probes; quasi-linear simulation
Categories
Funding
- National Natural Science Foundation of China [41274169, 41274174, 41174125, 41131065, 41121003, 41074120, 41231066, 41304134]
- Chinese Academy of Sciences [KZCX2-EW-QN510, KZZD-EW-01-4]
- National Key Basic Research Special Foundation of China [2011CB811403]
- Strategic Priority Research Program on Space Science of the Chinese Academy of Sciences [XDA04060201]
- Fundamental Research Funds for the Central Universities [WK2080000031]
Ask authors/readers for more resources
Storm time electron radiation belt dynamics have been widely investigated for many years. Here we present a rarely reported nonstorm time event of electron radiation belt evolution observed by the Van Allen Probes during 21-24 February 2013. Within 2 days, a new belt centering around L=5.8 formed and gradually merged with the original outer belt, with the enhancement of relativistic electron fluxes by a factor of up to 50. Strong chorus waves (with power spectral density up to 10(-4)nT(2)/Hz) occurred in the region L>5. Taking into account the local acceleration driven by these chorus waves, the two-dimensional STEERB can approximately reproduce the observed energy spectrums at the center of the new belt. These results clearly illustrate the complexity of electron radiation belt behaviors and the importance of chorus-driven local acceleration even during the nonstorm times.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
