The dayside high-latitude trough under quiet geomagnetic conditions: Radio tomography and the CTIP model

H...............H

Show simple item record

dc.contributor.author Dewis, K. L.
dc.contributor.author Balthazor, R. L.
dc.contributor.author Middleton, H. R.
dc.contributor.author Pryse, Sian
dc.date.accessioned 2008-12-05T09:38:30Z
dc.date.available 2008-12-05T09:38:30Z
dc.date.issued 2005
dc.identifier.citation Dewis , K L , Balthazor , R L , Middleton , H R & Pryse , S 2005 , ' The dayside high-latitude trough under quiet geomagnetic conditions: Radio tomography and the CTIP model ' Annales Geophysicae , vol 23 , no. 4 , pp. 1199-1206 . en
dc.identifier.other PURE: 90356
dc.identifier.other dspace: 2160/1393
dc.identifier.uri http://hdl.handle.net/2160/1393
dc.identifier.uri http://www.ann-geophys.net/23/1199/2005/angeo-23-1199-2005.pdf en
dc.identifier.uri http://cat.inist.fr/?aModele=afficheN&cpsidt=16986971 en
dc.description Pryse, Sian; Dewis, K.L.; Middleton, H.R.; Balthazor, R.L., (2005) 'The dayside high-latitude trough under quiet geomagnetic conditions: Radio tomography and the CTIP model', Annales Geophysicae 23(4) pp.1199-1206 RAE2008 en
dc.description.abstract The dayside high-latitude trough is a persistent feature of the post-noon wintertime auroral ionosphere. Radio tomography observations have been used to map its location and latitudinal structure under quiet geomagnetic conditions (Kp≤2) near winter solstice. The trough is also a clear feature in the ion density distribution of the Coupled Thermosphere-Ionosphere-Plasmasphere model (CTIP) under similar geophysical conditions. Comparisons of the measured and modelled distributions show that the plasma production equatorward of the trough is mainly controlled by solar radiation, but there are also other processes maintaining the equatorward trough-wall that are open to debate. The poleward trough-wall is produced by particle precipitation, but the densities are significantly overestimated by the model. At the trough minimum the observed densities are consistent with low nighttime densities convecting sunward to displace the higher daytime densities, but this is not borne out by the CTIP model. The study shows the potential of combining radio tomography and modelling to interpret the balance of the physical processes responsible for large-scale structuring of the high-latitude ionosphere, and highlights the role of tomographic imaging in validating and developing physical models. en
dc.format.extent 8 en
dc.language.iso eng
dc.relation.ispartof Annales Geophysicae en
dc.title The dayside high-latitude trough under quiet geomagnetic conditions: Radio tomography and the CTIP model en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.contributor.institution Institute of Mathematics & Physics (ADT) en
dc.contributor.institution Mathematics and Physics en
dc.description.status Peer reviewed en


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search Cadair


Advanced Search

Browse

My Account