SEDTRANS92 - A SEDIMENT TRANSPORT MODEL FOR CONTINENTAL SHELVES

The Atlantic Geoscience Centre sediment transport model (SEDTRANSB2) i s an ANSI standard FORTRAN-77 numerical model that has been under deve lopment for the last 9 years. For given input data of wave, current, a nd seabed conditions, SEDTRANS92 applies combined wave-current bottom boundary layer theories to derive enhanced bottom shear stresses. Then it calculates sediment transport rates for a given grain size using o ne of seven algorithms: Engelund and Hansen, total load equation; Eins tein-Brown, bedload equation; Bagnold, total load equation; Yalin, bed load equation; Ackers and White, total load equation; Smith, suspended load method; and the cohesive sediment transport algorithm of Amos an d Greenberg. This model adopts new advances of bottom boundary layer t heory and recently available field measurements of sediment transport rates on the Scotian Shelf. The model gives reasonable predictions com pared to the field measurements.