Accession Number : ADA131247

Title :   Longshore Sand Transport Distribution Across the Surf Zone due to Random Waves.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Abdelrahman,Saad Mesbah M

PDF Url : ADA131247

Report Date : Jun 1983

Pagination or Media Count : 87

Abstract : Water waves are one of the principal causes of shoreline changes. When waves break along the shore, they release their energy and momentum and give rise to a longshore current. The longshore current, along with the stirring action of the waves, is the primary mechanism for longshore sediment transport. The longshore sand transport rate is an essential factor determining erosion or accretion along a coast. If the longshore sand transport rate can be accurately estimated, a quantitative picture of shoreline evolution can be evaluated, including changes of the shoreline due to marine structures. In the present study, analytical and numerical models are developed based on a longshore current model for random waves and a sediment transport formulation by Thornton to predict the cross-shore sediment transport distribution and to compute the total volume of sand transport rate. The model is compared with the field data acquired from Leadbetter Beach, Santa Barbara, California.

Descriptors :   *Mathematical models, *Mathematical prediction, *Sediment transport, *Water waves, Sand, Shores, Contours, Surf, Beach erosion, Marine engineering, Ocean currents, Experimental data, Storms, California, Pacific Ocean, Theses

Subject Categories : Physical and Dynamic Oceanography
      Hydrology, Limnology and Potamology
      Numerical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE