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Acoustic gravity tornadoes in the atmosphere
Ruhr University of Bochum, Germany Ruhr University of Bochum, Germany University of Calif San Diego, CA 92093 USA University of Calif San Diego, CA 92093 USA .
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, The Institute of Technology.
2012 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 86, no 6Article in journal (Refereed) Published
Abstract [en]

It is shown that three-dimensional (3D) acoustic gravity waves (AGWs) in the atmosphere can appear in the form of acoustic gravity tornadoes (AGTs) characterized by twisted density structures or density ropes carrying orbital angular momentum. For our purposes, we use a previously obtained 3D wave equation for AGWs, and show that this equation in the paraxial approximation admits solutions in the form of Laguerre-Gauss acoustic gravity vortex beams or AGTs/AG whirls with twisted density structures supporting the dynamics of the AGTs.

Place, publisher, year, edition, pages
Institute of Physics , 2012. Vol. 86, no 6
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-87249DOI: 10.1088/0031-8949/86/06/065403ISI: 000312216200015OAI: diva2:587199

Funding Agencies|Deutsche Forschungsgemeinschaft (DFG), Bonn through Research Unit 1048|SH21/3-2|

Available from: 2013-01-14 Created: 2013-01-14 Last updated: 2013-01-14

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