Observation of isotropic electron temperature in the turbulent E region

Using EISCAT radar data, we find that electrons are strongly heated in the magnetic field-line direction during high electric field events. The remote site data show that the electron temperature increases in almost the same way in the field-perpendicular direction; electron heating by E region plas...

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Bibliographic Details
Published in:Annales Geophysicae
Main Authors: Saito, S., Buchert, S. C., Nozawa, S., Fujii, R.
Format: Text
Language:English
Published: 2018
Subjects:
EISCAT
Online Access:https://doi.org/10.5194/angeo-19-11-2001
https://angeo.copernicus.org/articles/19/11/2001/
Description
Summary:Using EISCAT radar data, we find that electrons are strongly heated in the magnetic field-line direction during high electric field events. The remote site data show that the electron temperature increases in almost the same way in the field-perpendicular direction; electron heating by E region plasma turbulence is isotropic. We discuss the implications of our observation for the "plasmon"-electron as well as the wave Joule heating models of the anomalous electron heating in the E region. Key words. Ionosphere (auroral ionosphere; plasma temperature and density; plasma waves and instabilities)

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