A new formula for the total longshore sediment transport rate
Författare
Summary, in English
A new predictive formula for the total longshore sediment transport (LST) rate was developed from principles of sediment transport physics assuming that breaking waves mobilize the sediment, which is subsequently moved by a mean current. Six high-quality data sets on hydrodynamics and sediment transport collected during both field and laboratory conditions were employed to evaluate the predictive capability of the new formula. The main parameter of the formula (a transport coefficient), which represents the efficiency of the waves in keeping sand grains in suspension, was expressed through a Dean number based on dimensional analysis. The new formula yields predictions that lie within a factor of 0.5 to 2 of the measured values for 62% of the data points, which is higher than other commonly employed formulas for the LST rate such as the CERC equation or the formulas developed by Inman-Bagnold and Kamphuis, respectively. The new formula is well suited for practical applications in coastal areas, as well as for numerical modeling of sediment transport and shoreline change in the nearshore. (c) 2007 Elsevier B.V. All rights reserved.
Avdelning/ar
Publiceringsår
2007
Språk
Engelska
Sidor
700-710
Publikation/Tidskrift/Serie
Coastal Engineering
Volym
54
Issue
9
Länkar
Dokumenttyp
Artikel i tidskrift
Förlag
Elsevier
Ämne
- Water Engineering
Nyckelord
- surf zone
- longshore sediment transport
- field data
- breaking waves
- predictive equation
- engineering application
- laboratory data
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0378-3839