Connotea
CiteULike
del.ico.us
BibSonomyAbstract
CRRES electric field power spectra and radial diffusion coefficients
Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts, USA
Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts, USA
Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts, USA
School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota, USA
School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota, USA
Radex, Inc., Bedford, Massachusetts, USA
Radex, Inc., Bedford, Massachusetts, USA
Combined Release and Radiation Effects Satellite (CRRES) Electric Field Instrument (EFI) data are used to determine the electric field power spectral density as a function of L and Kp over the frequency range 0.2 to 15.9 mHz. The power at each frequency is fit to the function P(L, Kp) = a Lb exp(cKp). Assuming a purely electrostatic field and making several other assumptions regarding the azimuthal dependence of the field fluctuations, a Kp-dependent radial diffusion coefficient DLL E is computed from the power spectra. The model average DLL E for high activity (Kp = 6) are between 1 to 2 orders of magnitude larger than that for low activity (Kp = 1), dependent upon L and first invariant.
Received 4 June 2004; accepted 21 December 2004; published 25 February 2005.
Citation: (2005), CRRES electric field power spectra and radial diffusion coefficients, J. Geophys. Res., 110, A02214, doi:10.1029/2004JA010612.
Cited By