Patchy occurrence of equatorial spread-F

dc.contributor.author	Sastri, J. H
dc.date.accessioned	2008-09-22T16:14:50Z
dc.date.available	2008-09-22T16:14:50Z
dc.date.issued	1985-10
dc.identifier.citation	Annales Geophysicae, Vol. 3, No. 5, pp. 589 - 592	en
dc.identifier.issn	0755-0685
dc.identifier.uri	http://hdl.handle.net/2248/3782
dc.description.abstract	From a statistical analysis of ionogram data of Kodaikanal (dip 3.5 deg N) it is shown that, during years of high sunspot activity, the discontinuous or patchy occurrence of equatorial spread-F (ESF) depends on season. While ESF occurrence is usually continuous on nights during the June solstice, it is frequently discontinuous on nights during the equinoctial months. This seasonal pattern, which is similar to the one noticed in VHF scintillations by Dasgupta et al. (1983), is not evident during years of low sunspot activity.	en
dc.publisher	European Geosciences Union	en
dc.relation.uri	http://ads.ari.uni-heidelberg.de/abs/1985AnGeo...3..589S	en
dc.subject	Equatorial Atmosphere	en
dc.subject	Ionospheric Disturbances	en
dc.subject	Solar Activity Effects	en
dc.subject	Spread F	en
dc.subject	Statistical Analysis	en
dc.subject	Annual Variations	en
dc.subject	Ionograms	en
dc.subject	Scintillation	en
dc.subject	Very High Frequencies	en
dc.title	Patchy occurrence of equatorial spread-F	en