Acoustic-gravity waves in the atmosphere: from Zakharov equations to wave-kinetics
2015 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 90, no 5, 055001- p.Article in journal (Refereed) Published
We develop a wave-kinetic description of acoustic-gravity (AG) waves in the atmosphere. In our paper the high frequency spectrum of waves is described as a gas of quasi-particles. Starting from the Zakharov-type of equations, where coupling between fast and slow density perturbations is considered, we derive the corresponding wave-kinetic equations, written in terms of an appropriate Wigner function. This provides an alternative description for the nonlinear interaction between the two dispersion branches of the AG waves.
Place, publisher, year, edition, pages
IOP Publishing: Hybrid Open Access , 2015. Vol. 90, no 5, 055001- p.
acoustic-gravity waves; Zakharov equations; Wigner function
IdentifiersURN: urn:nbn:se:liu:diva-120293DOI: 10.1088/0031-8949/90/5/055001ISI: 000356498700016OAI: oai:DiVA.org:liu-120293DiVA: diva2:843005
Funding Agencies|International Space Science Institute in Bern (Switzerland)2015-07-242015-07-242015-09-02