Mechanics of Sediment Transport by the Combination of Waves and Current

The motivation to develop a transport formulation for the combination of waves and current has been the necessity to model longshore transport passing tidal in- and outlets. The generally applied C.E.R.C. formula for the longshore transport is not applicable here because that formula relates the longshore transport to the longshore current...

T0-Berekening: Status Quo van UNIBEST-TC

Dit rapport gaat in op de ontwikkelingen bij het UNIBETS-TC model. Met dit model wordt het cross-shore en longshore sediment transport berekend. Om inzicht te krijgen in de verbeteringen in het model wordt er in dit rapport een T0-berekening (een berekening op tijdstip T=0) gemaakt. Dit maakt het mogelijk de ontwikkelingen te evalueren door het...

Schelpdieren in het Hollandse kustgebied: Herkomst, aanspoelgedrag en transportmechanismen (Voorstudie naar herkomst en betekenis voor zandtransport)

Dit is het tweede deel van een onderzoek naar het transport van mollusken in het Hollandse kustgebied, aan de hand van bodemmonsters uit de ondiepere kustzones (tot een diepte van iets meer dan - 20 meter NAP (fig. 2) en aanspoelingen van mollusken op het strand. Uit dit onderzoek blijkt onder meer, dat het moiluskenonderzoek zoals nu uitgevoerd...

A coastal Behaviour model

A computer model for wave analysis, sediment transport computation and morphological process prediction along a coast has been developed as a master of science thesis. The very important factor in morphological processes, the wave propagation, has been analyzed using a fairly realistic mathematical model, viz.: ENDEC model, which considers...

Shoreline Change and Strom-Induced Beach Erosion Modeling: A Collection of Seven Papers

This report consists of seven papers dealing with numerical simulation of beach change that were recently published by members of the Coastal Engineering Research Center, US Army Engineer Waterways Experiment Station, and colleagues from other organizations. The papers collectively provide an overview of the state of research and engineering...

Grootschalige zandgolfbeweging langs de Zuidelijke Deltakust

Deze nota gaat in op de vermeende grootschalige zandgolfbeweging langs de Zeeuwse Noordzeekust. Hiervoor is als eerste de Noordwestkust van Walcheren onderzocht. Na verwerking van kustmetingen (sedert 1882) kon de zandgolfbeweging worden geanalyseerd. Tevens kan een bepaalde systematiek in het zandgolfgedrag, in lengterichting van de kust,...

Movable-Bed Laboratory Experiments Comparing Radiation Stress and Energy Flux Factor as Predictors of Longshore Transport Rate

Three-dimensional movable-bed laboratory tests were conducted to compare radiaton stress and energy flux factor as predictors of the longshore sediment transport rate. The tests were performed in the U.S. Army Coastal Engineering Research Center's (CERC) Shore Processes Test Basin (SPTB). This report presents derivations of the radiaton stress...

An analysis of longshore currents and associated sediment transport in the surf zone

Two momentum based longshore current models and a preliminary longshore sediment transport model are derived, calibrated and tested in the present investigation. The Linear Longshore Current Model predicts the relatively small longshore current induced by monochromatic, two dimensional, gravity waves of finite height and near normal incidence...

Invloed van open paalschermen op stromingen nabij de kust

Open paalschermen worden in toenemende mate toegepast ter beteugeling van kusterosie zoals die onder meer op Walcheren voordoet. In Labaratorium de Voorst werden in 1971 en 1972 modelonderzoek uitgevoerd in een model met een vaste bodem. Het onderzoek was gericht op het vastleggen van de stroomsnelheidsreductie bij verschillende...

Littoral drift in the surf zone

Lecture held at Hydraulic Research Station on the basics of longshore transport calculations.

The coastal dynamics of sand waves and the influence of breakwaters and groynes

A mathematical description of sand waves along a coast and the effect of blocking structures on this coast, like groynes and breakwaters.

Budget of littoral sands in the vicinity of Point Arguello, California

This report shows the results of a detailed analysis of the various littoral processes which affect the California Coast between Pismo Beach and Santa Barbara. The method involves the concept of a sand budget based on the transport rates of all significant littoral processes. Each process is examined to assess the sedimentary contributions ...

Study of erosion along Homer spit and vicinity, Kachemak Bay, Alaska

This is a progress report on the Homer Spit Beach Erosion Study. Information is presented regarding the rapid acceleration of the erosion processes due to the subsidence of the Homer Spit during the 27 March 1964 earthquake. The effect on existing groins both before and after the quake are discussed. Immediately after the quake, emergency...

Erosion and accretion along Clatsop Spit

The study area encompasses 18 miles of Oregon coastline known as Clatsop Beach, which lies between the Columbia River south jetty and Tillamook Head, south of Seaside, Oregon. The physical changes (including man-made changes such as jetty construction which was initiated in 1885) that have occurred in the area since 1792 are described and...

Nearshore sediment movement - Central California coast

An 80- mile reach of the central California coast, extending from the mouth of the Russian River in the north to Half Moon Bay in the south, was studied for the characteristics of sediment movement in the nearshore zone. From the results of a large number of beach and offshore sediment samples and other information, several techniques were...

Kustvorm en materiaaltransport

Beschrijving van de relatie tussen langstransport en de kustvormen (kromming)