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Onshore sediment transport on a sandy beach under varied wave conditions: Flow velocity skewness, wave asymmetry or bed ventilation?
- Source :
-
Marine Geology . Apr2009, Vol. 259 Issue 1-4, p86-101. 16p. - Publication Year :
- 2009
-
Abstract
- Abstract: Measurements of the cross-shore suspended sediment flux obtained from a planar and barred beachface have been used to investigate the propensity for wave-driven onshore sediment transport during medium energy conditions. Three processes capable of transporting sediments onshore–flow velocity skewness, wave asymmetry and bed-ventilation were investigated to determine their relative importance. Onshore-directed flow accelerations under the steep front face of asymmetric waves were significantly correlated with sediment suspension, whilst the effects of flow skewness and bed-ventilation were discounted. An acceleration-modified form of the Meyer-Peter-type formula is used as initial attempt at modelling the onshore transport using a temporal filter to modify the bed shear stresses. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00253227
- Volume :
- 259
- Issue :
- 1-4
- Database :
- Academic Search Index
- Journal :
- Marine Geology
- Publication Type :
- Academic Journal
- Accession number :
- 37162908
- Full Text :
- https://doi.org/10.1016/j.margeo.2009.01.001