Paper#: 30
Poster #:
Session Name: Workshop 5B: Tail Processes
Room: West Ballroom
Day: Thursday
Time: 1:55-2:15 p.m.
Abstract Title: Energetic Electron Injection Signatures Observed by GPS at High Magnetic Latitudes
PresentSurname: Friedel, R. H. W.
All Authors: J. Ingraham, T.E. Cayton, R. H. W. Friedel, M.G. Henderson, M.G. Tuszewski, G. D. Reeves
Abstract : Energetic particle measurements continue to be expanded on the GPS constellation with the commissioning of two new instruments on recent GPS launches ns41 and ns54. These new instruments (BDD-IIR, CXD) now measure energetic electrons from about 100 keV to several MeV, extending GPS capabilities beyond in situ monitoring of radiation dose received by satellite components, to now include sensitivity to a portion of the population responsible for spacecraft charging. Indeed, the lower energy channels respond to a range of energies commonly associated with substorm injections (about 20 to 300 keV). We report here on the first measurements of energetic electron injection signatures (greater than 100 keV) with these instruments, many of which occur outside the trapping boundary for these energies. We investigate the relationship of these high latitude injections to other injection observations on the LANL geosynchronous satellites, POLAR and CLUSTER, and to other traditional indicators of substorm activity.