Physics
Scientific paper
Feb 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000jastp..62..157k&link_type=abstract
Journal of Atmospheric and Solar-Terrestrial Physics, Volume 62, Issue 3, p. 157-167.
Physics
8
Scientific paper
20 dB) mainly occur in the pre-midnight period, and in the post-midnight period, the scintillations are generally moderate (5-10 dB) or weak (<5 dB). The nocturnal scintillation occurrence decreases with the decrease in solar activity from 1989 to 1992. Monthly mean scintillation occurrence changes according to solar activity during E- and D-months but not so during J-months. The effects of magnetic activity on scintillations vary with season and, in general, inhibit the scintillation occurrence in the pre-midnight period and enhance it a little in the post-midnight period, especially after 0300 hours IST (Indian Standard Time). For most of the severe magnetic storms in which Dst goes below -125 nT and the recovery phase starts in the post-midnight to dawn local time sector, strong post-midnight scintillations, which sometimes extend for several hours beyond the local sunrise, are observed.
Gwal A. K.
Kumar Sanjeev
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