Anomalous electron heating and its effect on the electron density in the auroral electrojet

G. M. Milikh, Larisa Petrovna Goncharenko, Y. S. Dimant, J. P. Thayer, M. A. McCready

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Measurements made with the Sondrestrom incoherent scatter radar during the April 17, 2002 magnetic storm are presented. The magnetic storm produced strong convection electric fields with no particle precipitation at Sondrestrom. The observed increase in the E-region electron temperature was caused by the anomalous electron heating in the altitude range of 100-120 km, where Farley-Buneman turbulence is localized. An model of anomalous electron heating was validated by comparison with the ISR data. Estimates of electron density perturbations during the strong electric fields show a good agreement with the model that accounts for suppression of the electron/ion recombination rate due to anomalous electron heating. The observed increase in the electron density leads to modification of the ionospheric conductivity. This effect is of importance for ionosphere-magnetosphere coupling, and should be included in global models that are developed for space weather forecast.

Original languageEnglish
Article numberL13809
JournalGeophysical Research Letters
Volume33
Issue number13
DOIs
Publication statusPublished - Jul 1 2006

Fingerprint

auroral electrojets
electrojet
electron density
magnetic storms
heating
electron
magnetosphere-ionosphere coupling
ionospheric conductivity
electron-ion recombination
particle precipitation
incoherent scatter radar
space weather
electrons
E region
electric fields
electric field
forecasting
convection
turbulence
retarding

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Milikh, G. M., Goncharenko, L. P., Dimant, Y. S., Thayer, J. P., & McCready, M. A. (2006). Anomalous electron heating and its effect on the electron density in the auroral electrojet. Geophysical Research Letters, 33(13), [L13809]. https://doi.org/10.1029/2006GL026530

Anomalous electron heating and its effect on the electron density in the auroral electrojet. / Milikh, G. M.; Goncharenko, Larisa Petrovna; Dimant, Y. S.; Thayer, J. P.; McCready, M. A.

In: Geophysical Research Letters, Vol. 33, No. 13, L13809, 01.07.2006.

Research output: Contribution to journalArticle

Milikh, GM, Goncharenko, LP, Dimant, YS, Thayer, JP & McCready, MA 2006, 'Anomalous electron heating and its effect on the electron density in the auroral electrojet', Geophysical Research Letters, vol. 33, no. 13, L13809. https://doi.org/10.1029/2006GL026530
Milikh, G. M. ; Goncharenko, Larisa Petrovna ; Dimant, Y. S. ; Thayer, J. P. ; McCready, M. A. / Anomalous electron heating and its effect on the electron density in the auroral electrojet. In: Geophysical Research Letters. 2006 ; Vol. 33, No. 13.
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