Acoustic waves generated by gusty flow over hilly terrain

Details Acoustic waves generated by gusty flow over hilly terrain Acoustic waves generated by gusty flow over hilly terrain

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jgra..11010307w&link_type=abstract

Journal of Geophysical Research, Volume 110, Issue A10, CiteID A10307

Physics

2

Atmospheric Processes: Acoustic-Gravity Waves, Atmospheric Processes: Boundary Layer Processes, Atmospheric Composition And Structure: Thermosphere: Energy Deposition (3369), Cryosphere: Dynamics

Scientific paper

We examine the generation of acoustic waves by gusty flow over hilly terrain. We use simple theoretical models of the interaction between terrain and eddies and a linear model of acoustic-gravity wave propagation. The calculations presented here suggest that over a dense array of geographically extensive sources orographically generated vertically propagating acoustic waves can be a significant cause of thermospheric heating. This heating may account in good part for the thermospheric hot spot near the Andes reported by Meriwether et al. (1996, 1997).

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