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http://hdl.handle.net/2248/3025
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DC Field | Value | Language |
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dc.contributor.author | Ramesh, K. B | - |
dc.contributor.author | Sastri, J. H | - |
dc.date.accessioned | 2008-08-05T07:53:14Z | - |
dc.date.available | 2008-08-05T07:53:14Z | - |
dc.date.issued | 1995-06 | - |
dc.identifier.citation | Annales Geophysicae-Atmospheres Hydrospheres and Space Sciences, Vol. 13, No. 6, pp. 633 - 640 | en |
dc.identifier.issn | 0992-7689 | - |
dc.identifier.uri | http://hdl.handle.net/2248/3025 | - |
dc.description.abstract | Measurements of the changes in phase path of F-region reflections at normal incidence at Kodaikanal (77°28'E, 10°14'N, dip 3°N) from February 1991 to February 1993 are used to determine the variation of the equatorial evening F-region vertical drifts (Vz) with season, solar and magnetic activity. It is found that on average, at Kodaikanal, the post-sunset peak in Vz (Vzp) is higher in equinox and local winter months than in local summer. The day-to-day variability in Vzp is highest in summer and lowest in winter. This seasonal trend persists even on magnetically quiet days (Ap≤14). Vzp is found to increase with 10.7 cm solar flux in all three seasons but tends to saturate for large flux values (>230 units) during local summer and winter months. Magnetic activity [represented by Ap as well as the time-weighted accumulations of ap and ap(τ)] does not seem to have any statistically significant effect on Vzp, except during equinoctial months of moderate solar activity, when Vzp decreases as magnetic activity increases. | en |
dc.format.extent | 3894 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | en | en |
dc.publisher | European Geophysical Society | en |
dc.subject | Equatorial Ionosphere | en |
dc.subject | Ionospheric of Region | en |
dc.subject | Vertical Drift | en |
dc.subject | Solar Cycle | en |
dc.subject | Seasonal Variation | en |
dc.subject | Geomagnetic Activity | en |
dc.subject | India | en |
dc.subject | Asia | en |
dc.title | Solar cycle and seasonal variations in F-region vertical drifts over Kodaikanal, India | en |
dc.type | Article | en |
Appears in Collections: | IIAP Publications |
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Solar cycle and seasonal variations in F-region.... Restricted Access | Restricted Access | 413.9 kB | Adobe PDF | View/Open Request a copy |
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