Observations of the source and propagation of atmospheric gravity waves

Details Observations of the source and propagation of atmospheric gravity waves Observations of the source and propagation of atmospheric gravity waves

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.328..231c&link_type=abstract

Nature (ISSN 0028-0836), vol. 328, July 16, 1987, p. 231-233.

Physics

13

Atmospheric Circulation, Gravity Waves, Wave Generation, Wave Propagation, Auroral Electrojets, Auroral Zones, Earth Magnetosphere, Heating, Power Spectra

Scientific paper

Measurements made during the Worldwide Atmospheric Gravity Wave Study in the auroral source region are reported which show that enhanced Joule heating and Lorentz forcing lead to the generation of large-scale thermospheric waves. Both of these source mechanisms depend on the auroral electric field, and the intrinsic periodicity of the field determines the periodicity of waves observed an hour later propagating southwards over the UK. These observations provide the first confirmation of a link between a periodic auroral source and a large-scale gravity wave.

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