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Overlap of the plasmasphere and ring current: Relation to subauroral ionospheric heating


Metadata FieldValueLanguage
dc.contributorJ. D. Perezen_US
dc.creatorGurgiolo, C.
dc.creatorSandel, BR
dc.creatorPerez, JD
dc.creatorMitchell, DG
dc.creatorPollock, CJ
dc.creatorLarsen, BA
dc.date.accessioned2020-06-18T20:58:45Z
dc.date.available2020-06-18T20:58:45Z
dc.date.created2005-12
dc.identifier10.1029/2004JA010986en_US
dc.identifier.urihttps://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2004JA010986en_US
dc.identifier.urihttp://hdl.handle.net/11200/49886
dc.description.abstractThe overlap of the ring current with the outer plasmasphere is thought to play a major role in storm-time related increases in the subauroral ambient topside electron temperature. Instabilities generated within the overlap region, Coulomb collisions of plasmaspheric electrons with the ring current ions, and charge exchange are all thought to work either individually or together to generate a downward heat flux into the ionosphere to produce the increase in temperature. Analysis of IMAGE two-dimensional ring current and plasmasphere density maps together with in situ DMSP ambient electron temperature data shows that the heating generally occurs over a small radial extent within the plasmasphere/ring current overlap region and may be significantly earthward of the plasmapause. This argues against collisional heat conduction as the source of the heat flux and for an instability-based process. The finding that the heating occurs within well-defined ratios of the cold plasmasphere to hot ring current density strengthens this supposition.en_US
dc.formatPDFen_US
dc.publisherAMER GEOPHYSICAL UNIONen_US
dc.relation.ispartofJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICSen_US
dc.relation.ispartofseries2169-9380en_US
dc.subjectAURORAL RED ARCS; ION-CYCLOTRON WAVES; IMAGE MISSION; CURRENT O+; ENERGY; TEMPERATURE; MAGNETOSPHERE; PLASMAPAUSE; INSTABILITY; DYNAMICSen_US
dc.titleOverlap of the plasmasphere and ring current: Relation to subauroral ionospheric heatingen_US
dc.typeTexten_US
dc.type.genreJournal Article, Academic Journalen_US
dc.citation.volume110en_US
dc.citation.issueA12en_US
dc.description.statusPublisheden_US

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