A dynamical effect in the ionospheric F1 layer

dc.contributor.author	Taieb, C.
dc.contributor.author	Scialom, G.
dc.contributor.author	Kockarts, G.
dc.date	1978
dc.date.accessioned	2017-09-08T09:24:15Z
dc.date.available	2017-09-08T09:24:15Z
dc.identifier.uri	https://orfeo.belnet.be/handle/internal/6221
dc.description	Incoherent scatter observations of the ionospheric F1 layer above Saint-Santin (44.6°N) are analyzed after correction of a systematic error at 165 and 180 km altitude. The daytime valley observed around 200 km during summer for low solar activity conditions is explained in terms of a downward ionization drift which reaches -30 m s-1 around 180 km. Experimental determinations of the ion drift confirm the theoretical characteristics required for the summer daytime valley as well as for the winter behaviour without a valley. The computations require an effective dissociative recombination rate of 2.3 × 10-7 ( 300/ Te)0.7 (cm3s-1) and ionizing fluxes compatible with solar activity conditions at the time when the valley is observed.
dc.language	eng
dc.title	A dynamical effect in the ionospheric F1 layer
dc.type	Article
dc.subject.frascati	Physical sciences
dc.audience	Scientific
dc.source.title	Planetary and Space Science
dc.source.volume	26
dc.source.issue	11
dc.source.page	1007-1016
Orfeo.peerreviewed	Yes
dc.identifier.doi	10.1016/0032-0633(78)90024-7
dc.identifier.scopus	2-s2.0-0004539074