Radiation belt dynamics during solar minimum

Details Radiation belt dynamics during solar minimum Radiation belt dynamics during solar minimum

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989itns...36.2008g&link_type=abstract

(IEEE, DNA, Sandia National Laboratories, and JPL, Annual Conference on Nuclear and Space Radiation Effects, 26th, Marco Island,

Computer Science

19

Dmsp Satellites, Magnetic Storms, Proton Belts, Radiation Belts, Solar Cycles, Atmospheric Density, Low Altitude, Polar Caps

Scientific paper

Two types of temporal variation in the radiation belts are studied using low-altitude data taken onboard the DMSP F7 satellite: those associated with the solar cycle and those associated with large magnetic storm effects. Over a three-year period from 1984 to 1987 and encompassing solar minimum, the protons in the heart of the inner belt increased at a rate of approximately 6 percent per year. Over the same period, outer zone electron enhancements declined both in number and peak intensity. During the large magnetic storm of February 1986, following the period of peak ring current intensity, a second proton belt with energies up to 50 MeV was found at magnetic latitudes between 45 deg and 55 deg. The belt lasted for more than 100 days. The slot region between the inner and outer electron belts collapsed by the merging of the two populations and did not reform for 40 days.

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