An experimental evidence for kinetic roughening in a micromodel of mountain ranges is presented. We have observed that during the watering of an initially smooth ridge made of a mixture of silica sand and earthy soil the surface evolves into a shape analogous to actual mountain profiles with self-affine geometry. For the exponents describing respectively the temporal and the spatial scaling of the surface width {β}{}0.9 and {α}=0.78±{}0.05 have been obtained. The latter value is in very good agreement with {α}=0.8±{}0.1 we have calculated for genuine transect profiles.
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Czirók et al. (1993) studied this question.
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