DMSP/F2 electron observations of equatorward auroral boundaries and their relationship to the solar wind velocity and the north-south component of the interplanetary magnetic field

Details DMSP/F2 electron observations of equatorward auroral boundaries and their relationship to the solar wind velocity and the north-south component of the interplanetary magnetic field DMSP/F2 electron observations of equatorward auroral boundaries and their relationship to the solar wind velocity and the north-south component of the interplanetary magnetic field

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.9961h&link_type=abstract

Journal of Geophysical Research, vol. 86, Nov. 1, 1981, p. 9961-9974.

Mathematics

Logic

46

Auroral Zones, Electron Precipitation, Interplanetary Magnetic Fields, Satellite Observation, Correlation Coefficients, Electric Fields, Meteorological Satellites, Regression Analysis, Solar Wind Velocity

Scientific paper

Approximately 2500 equatorward boundaries of auroral electron precipitation were determined from data returned by the SSJ/3 electron detector aboard the DMSP/F2 satellite, in magnetic local sectors between 0400 and 1100 hours on the morningside of the oval and between 1500 and 2300 hours on the eveningside of the oval. An investigation of the relationship between the interplanetary magnetic field B(z) component, the solar wind speed V, and the position of the equatorward boundary of electron precipitation in the auroral zone has found that the boundary correlates well with both B(z) and VB (z) for values of B(z) less than about 1 nT. For values above 1 nT, the correlation is weak and the slope of the linear fit is negative. The trend in the slopes and intercept for the correlations of the boundary with VB(z) for B(z) values lower than 1 nT are found to be similar to those reported by Gussenhoven (1981).

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