The generation and propagation of atmospheric gravity waves observed during the Worldwide Atmospheric Gravity-wave Study (WAGS)

Details The generation and propagation of atmospheric gravity waves observed during the Worldwide Atmospheric Gravity-wave Study (WAGS) The generation and propagation of atmospheric gravity waves observed during the Worldwide Atmospheric Gravity-wave Study (WAGS)

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jatp...50..323w&link_type=abstract

(EISCAT Scientific Association, International EISCAT Workshop, 3rd, Bad Lauterberg, Federal Republic of Germany, Mar. 23-27, 198

Physics

54

Auroral Zones, Gravity Waves, Incoherent Scatter Radar, Ionospheric Propagation, Doppler Radar, Eiscat Radar System (Europe), Magnetometers, Riometers

Scientific paper

EISCAT incoherent scatter radar was used to observe the generation of atmospheric gravity waves in the auroral zone in conjunction with a network of magnetometers and riometers during the Worldwide Atmospheric Gravity-wave Study (WAGS) in October 1985. A chain of five ionosondes, an HF-Doppler system, a meteor radar and a radio telescope array were used to monitor any wave propagating southward over the UK. A correlation is found between the level of auroral activity observed by EISCAT and the wave activity observed by the ionosondes and the HF-Doppler network. In the region of the auroral source, Joule heating was found to be stronger than particle heating. Intrinsic periodicities were observed in the auroral electric field. On two occasions, the onset of an auroral disturbance with a clear periodicity in the electric field was followed an hour later by an ionospheric disturbance showing the same periodicity and travelling southward. It was found that waves of a longer period propagate further.

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