Geografie 2012, 117, 95-109

Bedload Sediment Transport in Connection with the Geomorphological Transition of Gravel-Bed Streams in the Moravskoslezské Beskydy Mountains

Tomáš Galia, Václav Škarpich, Jan Hradecký

Ostravská Univerzita v Ostravě, Přirodovědecká fakulta, katedra fyzické geografie a geoekologie, Chittussiho 10, 710 00 Slezská Ostrava, Czechia

Received February 2011
Accepted December 2011

This paper summarizes the results of bedload transport research in the Morávka, Mohelnice and Ostravice basins, conducted using the BAGS (Bedload Assessment for Gravel-bed Streams) spreadsheet-based program and unit stream power empirical formulas. The presented results only show the potential rate of bedload transport, because sediment inputs and barriers were not included in the model. Trends in the potential bedload transport rate represent a good instrument for identifying the range of disconnected sediment transport along the longitudinal profile. Modelling on cross-sections with a high rate of fluvial erosion shows an increase in potential bedload transport and larger diameters of the largest possible transported particles, calculated using unit stream power empirical formulas. The results may be applied to improve local watershed management.


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