Implications of Viking imager results for substorm models

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dc.contributor.advisorMurphree, John Sandy
dc.contributor.authorHenderson, Michael G.
dc.date.accessioned2005-07-29T22:55:39Z
dc.date.available2005-07-29T22:55:39Z
dc.date.issued1994
dc.descriptionBibliography: p. 280-290.en
dc.description.abstractUltraviolet auroral images obtained with the Viking satellite are used in conjunction with other data sets and magnetospheric magnetic modelling tools to provide new observations of expansion phase dynamics and to evaluate the major substorm models. Towards this end, a statistical survey of Viking optical onsets is performed. The short-term development of auroral forms within the bulge during the expansion phase are described and compared with geosyncronous particle data. It is found that intensifications of the poleward arc are an important means by which the poleward expansion of the bulge occurs. Such intensifications can lead to the formation of north-south aligned forms and particle injections at geosyncronous orbit. Various mapping techniques were used to infer magnetospheric source locations of substorms. The results generally point to a near earth location for onset. In addition, observations of the activation of auroral forms in the dusk sector suggest that the low latitude boundary layer becomes an active component during the expansion phase. Thus, substorms involve both internal magnetospheric processes as well as boundary layer processes. The implications of these and other Viking imager results are discussed.en
dc.format.extentxvi, 307 leaves : ill. ; 30 cm.en
dc.identifier.citationHenderson, M. G. (1994). Implications of Viking imager results for substorm models (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/22487en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/22487
dc.identifier.isbn0315939117en
dc.identifier.lccQC 809 M35 H45 1994en
dc.identifier.urihttp://hdl.handle.net/1880/30154
dc.language.isoeng
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subject.lccQC 809 M35 H45 1994en
dc.subject.lcshMagnetospheric substorms
dc.subject.lcshAuroral substorms
dc.subject.lcshDigital mapping
dc.titleImplications of Viking imager results for substorm models
dc.typedoctoral thesis
thesis.degree.disciplinePhysics and Astronomy
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.item.requestcopytrue
ucalgary.thesis.accessionTheses Collection 58.002:Box 923 520542014
ucalgary.thesis.notesoffsiteen
ucalgary.thesis.uarcreleaseyen
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