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Van Allen Probes Bibliography is from August 2012 through September 2021

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Observations of coincident EMIC wave activity and duskside energetic electron precipitation on 18-19 January 2013


AuthorBlum, L.; Halford, A.; Millan, R.; Bonnell, J.; Goldstein, J.; Usanova, M.; Engebretson, M.; Ohnsted, M.; Reeves, G.; Singer, H.; Clilverd, M.; Li, X.;
Keywordselectron precipitation; EMIC waves; Radiation belts; Van Allen Probes
AbstractElectromagnetic ion cyclotron (EMIC) waves have been suggested to be a cause of radiation belt electron loss to the atmosphere. Here simultaneous, magnetically conjugate measurements are presented of EMIC wave activity, measured at geosynchronous orbit and on the ground, and energetic electron precipitation, seen by the Balloon Array for Radiation belt Relativistic Electron Losses (BARREL) campaign, on two consecutive days in January 2013. Multiple bursts of precipitation were observed on the duskside of the magnetosphere at the end of 18 January and again late on 19 January, concurrent with particle injections, substorm activity, and enhanced magnetospheric convection. The structure, timing, and spatial extent of the waves are compared to those of the precipitation during both days to determine when and where EMIC waves cause radiation belt electron precipitation. The conjugate measurements presented here provide observational support of the theoretical picture of duskside interaction of EMIC waves and MeV electrons leading to radiation belt loss.
Year of Publication2015
JournalGeophysical Research Letters
Volume
Number of Pages
Section
Date Published07/2015
ISBN
URLhttp://doi.wiley.com/10.1002/2015GL065245
DOI10.1002/2015GL065245