dc.contributor.author | Sastri, J. H | |
dc.date.accessioned | 2008-08-06T05:41:31Z | |
dc.date.available | 2008-08-06T05:41:31Z | |
dc.date.issued | 1995-06 | |
dc.identifier.citation | Journal of Geophysical Research-Space Physics, Vol. 100, No. A 6, pp. 9753 - 9757 | en |
dc.identifier.issn | 0148-0227 | |
dc.identifier.uri | http://hdl.handle.net/2248/3036 | |
dc.description | Open Access | |
dc.description.abstract | A study is made of the effect of the rapid and large decline in the solar radiative output that occurred from March through May 1992 on the postsunset maximum in F layer vertical drift Vzp over Kodaikanal (dip 3°N). Between the periods July 1991 through February 1992 and June 1992 through February 1993, there is a 35% decrease in the mean amplitude of the postsunset peak in F layer vertical drift (Vzp) over Kodaikanal, corresponding to the 40% decrease in the mean level of the 10.7-cm solar radio flux.<p>Changes of the same magnitude are also seen when the comparison is restricted to a shorter interval of two local winter months preceding and following the rapid decline in the 10.7-cm flux. The results illustrate the sensitivity of equatorial F layer vertical drift in the dusk sector to short-term variability in the solar radiative output. Solar flux related changes in the longitudinal (local time) gradient in E region conductivity as well as in the F region zonal winds are suggested as the cause of the positive response of the dusktime peak in F layer vertical drift to the rapid decline in solar radiative output that occurred in early 1992. | en |
dc.format.extent | 3894 bytes | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en | en |
dc.publisher | American Geophysical Union | en |
dc.relation.uri | http://www.agu.org/pubs/crossref/1995/95JA00060.shtml | en |
dc.subject | Ionosphere: Equatorial Ionosphere | en |
dc.subject | Ionosphere: Electric Fields | en |
dc.subject | Ionosphere: Ionospheric Dynamics | en |
dc.title | Response of equatorial F layer vertical drift in the dusk sector to the change in the radiative output of the Sun in 1992 | en |
dc.type | Article | en |