1. Particle Lifting Processes in Dust Devils
- Author
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Jonathan Merrison, Gerhard Wurm, Thorben Kelling, Lynn D. V. Neakrase, Manish R. Patel, Francesca Esposito, Jasper F. Kok, Martina Klose, Béatrice Marticorena, and Matthew R. Balme
- Subjects
010504 meteorology & atmospheric sciences ,Particle lifting ,Mars ,WIND EROSION THRESHOLD ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Atmospheric sciences ,01 natural sciences ,Astrobiology ,Physics::Geophysics ,TRANSPORT PROCESSES ,SHEAR VELOCITY ,SALTATION BOMBARDMENT ,Planet ,0103 physical sciences ,Thermal ,010303 astronomy & astrophysics ,Dust devil ,Astrophysics::Galaxy Astrophysics ,Dust devils ,0105 earth and related environmental sciences ,SIZE DISTRIBUTIONS ,CONVECTIVE VORTICES ,Particle entrainment ,Earth ,Astronomy and Astrophysics ,FIELD OBSERVATIONS ,Mars Exploration Program ,Physik (inkl. Astronomie) ,Planetary science ,MARS PATHFINDER ,Space and Planetary Science ,Physics::Space Physics ,Particle ,Aeolian processes ,Environmental science ,Astrophysics::Earth and Planetary Astrophysics ,THRESHOLD FRICTION VELOCITY ,INTERANNUAL VARIABILITY - Abstract
Particle lifting in dust devils on both Earth and Mars has been studied from many different perspectives, including how dust devils could influence the dust cycles of both planets. Here we review our current understanding of particle entrainment by dust devils by examining results from field observations on Earth and Mars, laboratory experiments (at terrestrial ambient and Mars-analog conditions), and analytical modeling. By combining insights obtained from these three methodologies, we provide a detailed overview on interactions between particle lifting processes due to mechanical, thermal, electrodynamical and pressure effects, and how these processes apply to dust devils on Earth and Mars. Experiments and observations have shown dust devils to be effective lifters of dust given the proper conditions on Earth and Mars. However, dust devil studies have yet to determine the individual roles of each of the component processes acting at any given time in dust devils.
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