Physical processes causing the formation of penitentes
CLAUDIN, Philippe
Physique et mécanique des milieux hétérogènes [PMMH]
Service de physique de l'état condensé [SPEC - UMR3680]
Department of Physics [Haifa]
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Physique et mécanique des milieux hétérogènes [PMMH]
Service de physique de l'état condensé [SPEC - UMR3680]
Department of Physics [Haifa]
CLAUDIN, Philippe
Physique et mécanique des milieux hétérogènes [PMMH]
Service de physique de l'état condensé [SPEC - UMR3680]
Department of Physics [Haifa]
Physique et mécanique des milieux hétérogènes [PMMH]
Service de physique de l'état condensé [SPEC - UMR3680]
Department of Physics [Haifa]
ANDREOTTI, Bruno
Physique et mécanique des milieux hétérogènes [PMMH]
Mécanique, Matière Molle, Morphogénèse
< Reduce
Physique et mécanique des milieux hétérogènes [PMMH]
Mécanique, Matière Molle, Morphogénèse
Language
EN
Article de revue
This item was published in
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics. 2015-09-25, vol. 92, n° 3
English Abstract
Snow penitentes form in sublimation conditions by differential ablation. Here we investigate the physical processes at the initial stage of penitente growth and perform the linear stability analysis of a flat surface ...Read more >
Snow penitentes form in sublimation conditions by differential ablation. Here we investigate the physical processes at the initial stage of penitente growth and perform the linear stability analysis of a flat surface submitted to the solar heat flux. We show that these patterns do not simply result from the self-illumination of the surface—a scale-free process—but are primarily controlled by vapor diffusion and heat conduction. The wavelength at which snow penitentes emerge is derived and discussed. We found that it is controlled by aerodynamic mixing of vapor above the ice surface.Read less <