Longshore sediment transport: predicting rates in dissipative sandy beaches at southern Brazil (original) (raw)

Longshore sediment transport (LST) acts on beach morphodynamics on distinct temporal scales, being fundamental over sediment budget, and, so over the dynamic balance of coastlines. This study determined the most adequate methodology to estimate rates of non-cohesive sediments (from fine sand to gravel) transported by longshore currents, in the surf zone, under different meteoceanographic conditions, at the southern coast of Rio Grande do Sul (RS), Brazil. The methods proposed by CERC (Shore Protection Manual, Coastal Engineering Research Center (CERC), US Army Corps of Engineers Research and Development Center, Coastal and Hydraulics Laboratory, Vicksburg, 1984), Kamphuis (J Waterw Port Coast Ocean Eng 117(6):624–640, 1991), Bayram et al. (Coast Eng 54:700–710, 2007) and Van Rijn (Coast Eng 90:23–33, 2014) were tested through the comparison with data collected with streamer traps, as well as through statistical tests. Van Rijn (2014) was elected the most suitable approach for all be...