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Assessing the power law hypothesis for the size-frequency distribution of terrestrial and martian dust devils |
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| Authors: | A.V. Pathare M.R. Balme M.C. Towner |
| Affiliation: | a Planetary Science Institute, 1700 E Fort Lowell Rd., Suite 106, Tucson, AZ 85719, USA b Department of Physics & Astronomy, The Open University, Milton Keynes, UK c Laboratoire de Meteorologie Dynamique, Universite Pierre et Marie Curie, Paris, France d Dept. of Earth Science and Engineering, Imperial College, South Kensington Campus, London SW7 2AZ, UK e Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, MI 48109, USA |
| Abstract: | Competing hypotheses for the diameter dependence of terrestrial and martian dust devil frequency are assessed using new field observations from two sites in the southwestern United States. We show that at diameters less than 12 m, our observed dust devil size-frequency distributions are better fit by an exponential function than by a power law formulation, and discuss the implications for larger dust devils on Earth and Mars. |
| Keywords: | Earth Mars, Atmosphere Meteorology |
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