GRAIN-SORTING OVER RIPPLES INDUCED BY SEA RIPPLES

Enrico Foti, Paolo Blondeaux

Abstract


A predictive theory for the formation of ripples under sea waves is presented for a sandy bottom characterized by a large grain-size distribution. The theory is based on a linear stability analysis. The conditions for the amplification or decay of bottom perturbations are determined and the experimentally observed sorting effect due to the presence of the bedforms is modelled. A comparison between the experimental data available in literature and the present results is attempted.

Keywords


ripples; grain sorting

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