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|Title:||Dependence of total longshore sediment transport rates on incident wave parameters and breaker type|
|Authors:||Smith, Ernest R.|
Ebersole, Bruce A.
Longshore sediment transport rate
Shallow-water wave theory
|Publisher:||Coastal and Hydraulics Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||Technical note (Coastal and Hydraulics Engineering (U.S.)) ; IV-62.|
PURPOSE: Total longshore sediment transport (LST) rate and its cross-shore distribution in the surf zone are essential to many coastal engineering and science studies. Practical engineering applications such as predicting beach response in the vicinity of coastal structures, beach-fill evolution and renourishment requirements, and sedimentation rates in navigation channels all require accurate predictions of LST rates. Present predictive tools have been developed based primarily on field studies; however, obtaining high-quality data in the field is difficult (Wang and Kraus 1999). Arguably the most widely used model for estimating total longshore sediment transport rate is the “CERC” formula (Coastal Engineering Manual 2002, Shore Protection Manual 1984), which is based on field measurements and is often applied to calculate the total LST rate. Accuracy of the CERC formula is believed to be ± 30-50 percent at best; and several parameters that logically might influence LST are excluded in the formula, such as breaker type and grain size.
|Appears in Collections:||CHETN - SECTION 04 - Inlets and Estuary Channels|