Lower thermospheric wind measurements near 60° Λ from 5577Å Doppler interferometry

Fabry-Perot interferometer measurements of the Doppler shift of the 5577Å O1S emission are used to derive neutral wind velocities at E-region altitudes over Halley, Antarctica (Λ=61°). These measurements, recorded during the Lower Thermosphere Coupling Study (LTCS) period in September 1987, show rel...

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Bibliographic Details
Published in:Advances in Space Research
Main Authors: Rodger, Alan S., Stewart, R.D.
Format: Article in Journal/Newspaper
Language:unknown
Published: Elsevier 1990
Subjects:
Antarc*
Antarctica
Online Access:http://nora.nerc.ac.uk/id/eprint/520837/
https://doi.org/10.1016/0273-1177(90)90252-U
Description
Summary:Fabry-Perot interferometer measurements of the Doppler shift of the 5577Å O1S emission are used to derive neutral wind velocities at E-region altitudes over Halley, Antarctica (Λ=61°). These measurements, recorded during the Lower Thermosphere Coupling Study (LTCS) period in September 1987, show relatively large amplitude oscillatory wind fields of ∼50–100 ms−1 during geomagnetically quiet periods but remarkably low wind velocities during geomagnetically active periods (∼10 ms−1). A brief interpretation of these observations is presented.

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