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dc.contributor.advisor Kelley, Michael
dc.contributor.author Varney, Roger Hale
dc.date.accessioned 2015-07-24T13:51:21Z
dc.date.accessioned 2017-02-27T22:52:05Z
dc.date.available 2015-07-24T13:51:21Z
dc.date.available 2017-02-27T22:52:05Z
dc.date.issued 2012
dc.identifier.citation Varney, R. H. (2012).==$Photoelectron transport and energy balance in the low-latitude ionosphere$==(Dissertation for the degree of Doctor of Philosophy). Cornell University, United States. es_ES
dc.identifier.uri http://hdl.handle.net/20.500.12816/26
dc.description.abstract Theoretical studies of ionospheric structure and dynamics require knowledge of the underlying thermal structure of the ionosphere since it affects the chemical reaction rates, recombination rates, and pressure gradients. Measurements of ionospheric temperatures have been made for decades with a variety of ground- and space-based techniques. This thesis is motivated in particular by the recent improvements in the temperature measurements made by the Jicamarca Radio Observatory (JRO) using the incoherent scatter radar (ISR) technique. Modern ionospheric models all have widely different treatments of ionospheric energetics, and none can produce satisfactory quantitative agreement with the JRO measurements even in quiet conditions. This thesis explores the energy balance calculations in the widely used, open source SAMI2 model in detail, and shows that it is the oversimplification of the treatment of nonlocal heating by photoelectrons in particular which is pre- venting this model from predicting JRO measurements. This thesis presents an extended version of the SAMI2 model, called SAMI2-PE, which includes a newly developed photoelectron transport model. The model uses finite volume methods which guarantee conservation of particles and energy, incorporates the magnetic field geometry and magnetic mirroring effects, and can be extended to any spatial, energy, and pitch-angle resolution. The new model shows promising agreement with the JRO measurements. es_ES
dc.description.uri Tesis es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Cornell University es_ES
dc.rights info:eu-repo/semantics/openAccess es_ES
dc.rights.uri https://creativecommons.org/licences/by/4.0/ es_ES
dc.subject Ionosphere es_ES
dc.subject Atmospheric temperature es_ES
dc.subject Radar es_ES
dc.subject Magnetic field es_ES
dc.subject Energy balance es_ES
dc.title Photoelectron transport and energy balance in the low-latitude ionosphere es_ES
dc.type info:eu-repo/semantics/doctoralThesis es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.01 es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#2.02.00 es_ES
thesis.degree.name Doctor of Philosophy es_ES
thesis.degree.grantor Cornell University es_ES
thesis.degree.level Doctorado es_ES
thesis.degree.discipline Ingeniería Eléctrica es_ES

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