Atmospheric gravity waves from the impact of comet Shoemaker-Levy 9 with Jupiter

Details Atmospheric gravity waves from the impact of comet Shoemaker-Levy 9 with Jupiter Atmospheric gravity waves from the impact of comet Shoemaker-Levy 9 with Jupiter

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.1083i&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 11, p. 1083-1086

Physics

21

Cometary Collisions, Gravity Waves, Hypervelocity Impact, Jupiter (Planet), Jupiter Atmosphere, Shoemaker-Levy 9 Comet, Amplitudes, Infrared Imagery, Wave Propagation

Scientific paper

We study the effect of the Jovian water cloud on internal gravity waves generated by the impact of comet Shoemaker-Levy 9 (SL9). Vertical structure follows Voyager data to the 1-bar level, a moist adiabat from 1 to 5 bars, and a dry adiabat below the 5-bar level. The waves are trapped in the moist layer and propagate horizontally. Their speed is related to the vertical integral of the Brunt-Vaisala frequency, and varies as the square root of the water abundance (130 m/s for solar composition). The amplitudes are large, e.g., +/- 1 K at a distance of 8000 km for an energy of 1027 ergs. The circular ripples should be detectable one or two days after the impact in thermal infrared and visible images.

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