Kinetic simulations of 3‐D Farley‐Buneman turbulence and anomalous electron heating

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dc.contributor.authorOppenheim, M. M.
dc.contributor.authorDimant, Y. S.
dc.date.accessioned2018-11-09T15:25:40Z
dc.date.available2018-11-09T15:25:40Z
dc.date.issued2013-02-27
dc.description.abstractElectric fields map from the magnetosphere to the E region ionosphere where they drive the intense currents of the auroral electrojet. Particularly during geomagnetic storms and substorms, these currents become sufficiently intense to develop Farley‐Buneman (FB) streaming instabilities and become turbulent. This leads to anomalous electron heating which can raise the electron temperature from 300 K to as much as 4000 K and, also, modifies auroral conductivities. This paper describes the first fully kinetic 3‐D simulations of electric field‐driven turbulence in the electrojet and compares the results with 2‐D simulations and observations. These simulations show that 3‐D turbulence can dramatically elevate electron temperatures, enough to explain the observed heating. They also show the saturated amplitude of the waves; coupling between linearly growing modes and damped modes; the propagation of the dominant modes at phase velocities near the acoustic velocity, slower than in 2‐D simulations; and anomalous cross‐field electron transport, leading to a greatly increased E region Pedersen conductivity. These simulations provide information useful in accurately modeling FB turbulence and represent significant progress in understanding the electrojet.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationOppenheim, M. M., & Dimant, Y. S. (2013). Kinetic simulations of 3‐D Farley‐Buneman turbulence and anomalous electron heating.==$Journal of Geophysical Research: Space Physics, 118$==(3), 1306-1318. https://doi.org/10.1002/jgra.50196es_ES
dc.identifier.doihttps://doi.org/10.1002/jgra.50196es_ES
dc.identifier.journalJournal of Geophysical Research: Space Physicses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/3509
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Uniones_ES
dc.relation.ispartofurn:issn:2169-9380
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectIonospherees_ES
dc.subjectElectrojetes_ES
dc.subjectTurbulencees_ES
dc.subjectFarley‐Bunemanes_ES
dc.subjectSimulationes_ES
dc.subjectAurorales_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleKinetic simulations of 3‐D Farley‐Buneman turbulence and anomalous electron heatinges_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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