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Dust devil generation
Institute Phys Earth, Russia; Moscow Space Research Institute, Russia.
Institute Mediterranean AMU, France; University of Texas Austin, TX 78712 USA; Aix Marseilles University, France.
Institute Phys Earth, Russia.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, The Institute of Technology.
2014 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 89, no 7, 075606- p.Article in journal (Refereed) Published
Abstract [en]

The equations describing axi-symmetric nonlinear internal gravity waves in an unstable atmosphere are derived. A hydrodynamic model of a dust devil generation mechanism in such an atmosphere is investigated. It is shown that in an unstably stratified atmosphere the convective plumes with poloidal motion can grow exponentially. Furthermore, it is demonstrated that these convective plumes in an atmosphere with weak large scale toroidal motion are unstable with respect to three-dimensional dust devil generation.

Place, publisher, year, edition, pages
IOP Publishing: Hybrid Open Access , 2014. Vol. 89, no 7, 075606- p.
Keyword [en]
vortex structures; internal gravity waves; tornadoes; temperature gradients
National Category
Physical Sciences
URN: urn:nbn:se:liu:diva-111299DOI: 10.1088/0031-8949/89/7/075606ISI: 000341561800028OAI: diva2:755285

Funding Agencies|International Space Science Institute in Bern (Switzerland); Russian Academy of Sciences [8, 22]; RFBR [14-05-00850]; NSF [0964692]; University of Aix-Marseille/CNRS; IMeRA Grant for Advanced Research

Available from: 2014-10-14 Created: 2014-10-14 Last updated: 2015-01-22

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