Intensity distribution of dayside polar soft electron precipitation and the IMF

Details Intensity distribution of dayside polar soft electron precipitation and the IMF Intensity distribution of dayside polar soft electron precipitation and the IMF

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983p%26ss...31..489c&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 31, May 1983, p. 489-498.

Physics

22

Electron Distribution, Electron Precipitation, Interplanetary Magnetic Fields, Space Plasmas, Dmsp Satellites, Magnetic Storms, Polar Regions, Southern Hemisphere, Spatial Distribution

Scientific paper

The average differential electron flux over two months of local summer was studied in order to determine the influence of the B(z) and B(y) polarity of the IMF on the location of the dayside regions of precipitating, low energy electrons recorded by the DMSP F-2 satellite. Spatial distributions are similar for electrons in the 50-183 eV range, and the region of maximum intensity for K(p) values not greater than 2(+) over the Southern Hemisphere is located on the opposite side of noon from the Northern Hemisphere. When the IMF is northward, a marked asymmetry of the low energy electron precipitation between the positive and negative B(y) cases is observed. The dynamical variations associated with substorm activity when the IMF is southward obscure the expected B(y) effect.

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