Field measurements of sheet flow sediment transport in the swash zone
| Autor: | Chris Blenkinsopp, Ian L. Turner, Thijs Lanckriet, Jack A. Puleo, Gerd Masselink, Daniel Conley, Paul Russell |
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| Přispěvatelé: | Lynett, P, McKee Smith, J M |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Lanckriet, T, Puleo, J A, Masselink, G, Turner, I L, Conley, D, Blenkinsopp, C & Russell, P E 2012, Field measurements of sheet flow sediment transport in the swash zone . in P Lynett & J M McKee Smith (eds), International Conference on Coastal Engineering : Proceedings of 33rd Conference on Coastal Engineering, Santander, Spain, 2012 . vol. 33 (2012) . Scopus-Elsevier |
| Popis: | A newly developed Conductivity Concentration Profiler (CCP), capable of rendering a 29-point sediment concentration profile at 1 mm vertical resolution, was deployed on a macrotidal beach in Perranporth, UK, as part of a comprehensive field study on swash zone hydrodynamics and sediment transport. Initial field results show the occurrence of sheet flow during both the uprush andbackwash phases of the swash cycle. Concentration profiles in the sheet flow layer are approximately linear, witha power-law tail at the top of the layer. The datasuggest that shear stresses are the dominant forcing for sediment mobilization, but pressure gradients provide a secondary mobilization mechanism. |
| Databáze: | OpenAIRE |
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