Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.181..157a&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 181, no. 1, July 1991, p. 157-159.
Physics
1
Solar Flares, Solar Terrestrial Interactions, Solar X-Rays, Sudden Ionospheric Disturbances, D Region, Goes Satellites, Solar Physics
Scientific paper
This Letter is based on analysis of data on SID listed in Solar Geophysical Data. The mean durations of 1272 SIDs taken from the SGD lists were calculated with respect to their associated X-ray flares. In general, all of the present calculated mean durations showed a large scatter in the mean values. The comparison of the present values by the estimated Solar Geophysical Data Center SID durations indicated an apparent discrepancy in the mean duration relative to that estimated by SGD for the case of low levels of SID importance. This apparent discrepancy suggests a need for a correction in SGD's assumptions in the importance range from -1 to +1.
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