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dc.contributor.authorWood, A. G.
dc.contributor.authorPryse, S. E.
dc.contributor.authorGrande, M.
dc.contributor.authorWhittaker, I. C.
dc.contributor.authorCoates, A. J.
dc.contributor.authorHusband, K.
dc.contributor.authorBaumjohann, W.
dc.contributor.authorZhang, T. L.
dc.contributor.authorMazelle, C.
dc.contributor.authorKallio, E.
dc.contributor.authorFraenz, M.
dc.contributor.authorMcKenna-Lawlor, S.
dc.contributor.authorWurz, P.
dc.date.accessioned2014-05-15T09:01:02Z
dc.date.available2014-05-15T09:01:02Z
dc.date.issued2012-12
dc.identifier118677750
dc.identifier34aa9a69-cef8-4fb7-a0a9-7fd3eb3e54a2
dc.identifier000314007400044
dc.identifier84870613010
dc.identifier.citationWood , A G , Pryse , S E , Grande , M , Whittaker , I C , Coates , A J , Husband , K , Baumjohann , W , Zhang , T L , Mazelle , C , Kallio , E , Fraenz , M , McKenna-Lawlor , S & Wurz , P 2012 , ' The transterminator ion flow at Venus at solar minimum ' , Planetary and Space Science , vol. 73 , no. 1 , pp. 341-346 . https://doi.org/10.1016/j.pss.2012.08.006en
dc.identifier.issn0032-0633
dc.identifier.urihttps://hdl.handle.net/10023/4795
dc.descriptionFinancial support for this paper was provided by the UK Science and Technology Facilities Council under grant PP/E001157/1.en
dc.description.abstractThe transterminator ion flow in the Venusian ionosphere is observed at solar minimum for the first time. Such a flow, which transports ions from the day to the nightside, has been observed previously around solar maximum. At solar minimum this transport process is severely inhibited by the lower altitude of the ionopause. The observations presented were those made of the Venusian ionospheric plasma by the ASPERA-4 experiment onboard the Venus Express spacecraft, and which constitute the first extensive in-situ measurements of the plasma near solar minimum. Observations near the terminator of the energies of ions of ionospheric origin showed asymmetry between the noon and midnight sectors, which indicated an antisunward ion flow with a velocity of (2.5 +/- 1.5) km s(-1). It is suggested that this ion flow contributes to maintaining the nightside ionosphere near the terminator region at solar minimum. The interpretation of the result was reinforced by observed asymmetries in the ion number counts. The observed dawn-dusk asymmetry was consistent with a nightward transport of ions while the noon-midnight observations indicated that the flow was highly variable but could contribute to the maintenance of the nightside ionosphere.
dc.format.extent6
dc.format.extent728066
dc.language.isoeng
dc.relation.ispartofPlanetary and Space Scienceen
dc.subjectVenusen
dc.subjectIonosphereen
dc.subjectIon flowen
dc.subjectAntisunward flowen
dc.subjectIon transporten
dc.subjectNightsideen
dc.subjectPlasmaen
dc.subjectASPERA-4en
dc.subjectTransporten
dc.subjectIonopauseen
dc.subjectDensityen
dc.subjectQB Astronomyen
dc.subject.lccQBen
dc.titleThe transterminator ion flow at Venus at solar minimumen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. Applied Mathematicsen
dc.identifier.doi10.1016/j.pss.2012.08.006
dc.description.statusPeer revieweden


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