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Chavarrias Borras, V. (author), Stecca, Guglielmo (author), Siviglia, Annunziato (author), Blom, A. (author)A notable drawback in mixed-size sediment morphodynamic modeling is the fact that the most commonly used mathematical model in this field (i.e., the active layer model Hirano, 1971) can be ill-posed under certain circumstances. Under these conditions the model loses its predictive capabilities, as negligible perturbations in the initial or...journal article 2019