DBPapers
DOI: 10.5593/sgem2017/62/S28.117

MODELLING OF THE ELECTRON TEMPERATURE INCREASING IN THE SUBAURORAL IONOSPHERE

A. Yu. Gololobov, I. A. Golikov, T. N. Solovyev
Tuesday 12 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7408-13-3 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 62, 915-922 pp, DOI: 10.5593/sgem2017/62/S28.117

ABSTRACT

The results of the electron temperature distribution modelling in the F region of the subauroral ionosphere for different helio-geomagnetic conditions are presented taking into account magnetospheric heat fluxes. The study has been carried out using the threedimensional model of the high-latitude ionosphere in Euler’s variables which taking into account its thermal regime. It is shown that during the period of low solar activity in winter solstice condition the displacement of poles leads to regular longitudinal features in electron temperature distribution due to the diurnal rotation of the Earth around it’s axis. Thus, for the quiet geomagnetic conditions the “hot” zones with increasing electron temperature are formed in the morning and evening sectors and for the disturbed geomagnetic conditions the ring-shaped “hot” region is formed during 04 – 06 UT interval as a result of the heat transfer from the Earth’s magnetosphere along the magnetic field lines. Analysis of data obtained by satellite measurements shows the possibility of forming such zone during geomagnetic disturbances.

Keywords: high-latitude ionosphere, ionosphere modelling, electron temperature, heat flux.