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Temporal and spatial evolution of auroral electron energy spectra in a region surrounding the magnetic zenith

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dc.contributor.authorTuttle, S.
dc.contributor.authorGustavsson, B.
dc.contributor.authorLanchester, B.
dc.date.issued2014
dc.descriptionLink to a related website: https://agupubs.onlinelibrary.wiley.com/doi/pdfdirect/10.1002/2013JA019627, Open Access via Unpaywall
dc.description.abstractWe present a new method for estimating the spatial and temporal evolution of the auroral electron energy spectrum at subkilometer and subsecond scales using optical and incoherent scatter radar data. This method is applied to an event on 12 December 2006 when a thin auroral arc that exhibits subkilometer structuring is observed. The energy spectrum and resultant emission rates are estimated for a 10 s period when the arc was in the field of view of the optical instrumentation. Modeled images of the observed aurora are produced using the estimated emission rates and compared with the optical observations of the aurora. We find the modeled images reproduce the structure and dynamics of the observed aurora to within the uncertainties of the models used. The brightness underestimate of about 30% can be explained by the underestimate of the energy flux from the radar measurements.
dc.identifier.citationJournal of Geophysical Research (JGR): Space Physics, 2014; 119(3):2318-2327
dc.identifier.doi10.1002/2013JA019627
dc.identifier.issn2169-9380
dc.identifier.issn2169-9402
dc.identifier.urihttps://hdl.handle.net/11541.2/144080
dc.language.isoen
dc.publisherWiley
dc.relation.fundingPPARC
dc.relation.fundingSTFC
dc.relation.fundingNERC
dc.relation.fundingCRIRP
dc.rightsCopyright 2014 American Geophysical Union
dc.source.urihttps://doi.org/10.1002/2013JA019627
dc.subjectaurora
dc.subjectelectron energy
dc.subjectelectron precipitation
dc.titleTemporal and spatial evolution of auroral electron energy spectra in a region surrounding the magnetic zenith
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9916433904201831

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