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Accession Number:
AD0610940
Title:
GEOGRAPHIC DISTRIBUTION OF IONOSPHERIC DISTURBANCE IN THE F2 LAYER,
Corporate Author:
DIRECTORATE OF SCIENTIFIC INFORMATION SERVICES OTTAWA (ONTARIO)
Report Date:
1963-04-01
Abstract:
An analysis was made of ionospheric disturbance synoptic charts and of longitudinal distribution graphs of the percentage departures of the critical frequency. It was concluded that For a day or two before the commencement of a magnetic storm the departure curves in the mean lie above the zero level. At the commencement of a magnetic storm the negative departures increase, reaching 80, with the maximum negative departures mainly associated with longitudes 180 deg W - 70 deg E. During an active storm period the negative departures extend to all longitudes, and are as much as 60-80. The maximum negative departures are at longitudes 180 deg W - 70 deg E. During this period total absorption is observed at longitudes 80-140 deg W. Such distribution, it seems, may be explained by dependence of delta f sub oF2 on geomagnetic latitude. At the end of a magnetic storm the curves are observed to rise toward zero level. Consideration was given to how these conclusions could possibly be applied in the practical work of short-term forecasting of radio conditions.
Supplementary Note:
Trans. of Akademiya Nauk SSSR. Institut Zemnogo Magnetizma Ionosfery Rasprostraneniya Radiovoln. Trudy, 1961, no. 19(29) p. 31-43. Also available from NRC as C-4393.
Pages:
0015
File Size:
0.00MB
