Modello cinematico per lo studio della propagazione in alvei naturali di debris-flow con notevole variazione del volume in moto.

Some theoretical predictions of a mathematical model for the movement of a mixture of water and debris in a channel with a constant slope, are qualitatively compared with the behavior of some lahars observed when the Nevado del Ruiz erupted on November 13th, 1985. Some procedures that allow the use of the model to reconstruct the conditions of movement initiation of debris flows or lahars using gaging stations records are also presented. The application of these procedures to some italian and american debris flows, which were recorded using gaging stations, are subsequently discussed.