Measurements of thermospheric response to auroral activities

Physics

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Atmospheric Temperature, Auroral Electrojets, Fabry-Perot Interferometers, Temperature Measurement, Thermosphere, Atmospheric Heating, Magnetometers, Polar Substorms

Scientific paper

The Joule heating produced by auroral electrojets and its thermospheric response can be studied by monitoring the thermospheric temperatures by means of optical methods and simultaneously investigating the concurrent auroral electrojet activities using geomagnetic records obtained from stations along a meridian close to the observation site of optical measurements. Measurements of thermospheric response to auroral activities which were made at Albany, New York on 2 September 1978 (U.T.) when an isolated substorm occurred are reported. The thermospheric temperatures were measured by using a high-resolution Fabry-Perot interferometer that determines the line profiles of the forbidden O I 6300 A line emission. The intensities and latitudinal positions of auroral electrojets were obtained by the analysis of magnetograms from the IMS Fort Churchill meridian chain stations.

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