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Bookmark or Share- First quantitative characterization of the Martian dust devil ...From this model, the height (H) of a dust devil is calculated by H = Wε/σ, where W is the average vertical velocity of the particles at the top of the saltation layer, σ and ε are the electric conductivity and the electric permittivity of the Martian atmosphere, respectively (σ = 2.5 × 10 −12 S/m and ε = 1.6 ε 0, where ε 0 is the ...
- Dust Devil - an overview | ScienceDirect TopicsDust devil vortices are generated by solar heating of the surface which causes warm air to rise and interact with cool air, or as air interacts with an irregular surface (Greeley et al., 2003). The dust devil vortex creates an area of lower pressure at its core, known as Δp (Greeley et al., 2003). As the dust devil moves rapidly across the ...
- Albedo analysis of dust devil-induced slope streaks and tracks on Mars ...The reflectance values of the dust devil tracks range from 0.18 to 0.20, while slope streaks have reflectance values between 0.16 and 0.19. The relative albedo measurements of the dust devil tracks are generally consistent with the results of Munaretto et al. (2021). In general, our albedo analysis revealed that all measured slope streaks are ...
- The contribution of dust devils and dusty plumes to the aerosol budget ...For a standard dust devil and a dust plume, the average vertical dust flux values (F d) were 0.7 gm −2 s −1 and 0.1 gm −2 s −1, respectively, and the maximum and minimum values were 1.13 gm −2 s −1 and 0.47 gm −2 s −1 (Koch and Renno, 2005). The σ can be calculated according to Equation (2).
- Clearing enhances dust devil formation - ScienceDirectGentle slopes favour dust devil formation, but not mountains and foothills (Brooks, 1960). Although they tend not to form where there is extensive tree-cover (Sinclair, 1969), the existence of vegetation per se does not preclude dust devil formation (Mattsson et al., 1993, McGinnigle, 1966).
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