Quantification of Biogeomorphological Variables for Dutch Tidal Systems

Tidal asymmetry and residual sediment transport in estuaries

Theoretical study on tidal asymmetry and application to the Westerschelde estuary.

Stroom- en golfmetingen op de slikken gelegen voor de schorren in de Westerschelde

Ein Algebrisches Turbulenzmodel für Ästuare

The density distribution within a fluid is of great importance for flow and transport phenomena in geophysical computational fluid dynamics. All turbulent exchange processes are influenced by buoyancy effects and must be adequately considered in numerical models. Parameterizations of the vertical eddy viscosity and eddy diffusivity are presented...

Estuarine Muds manual

This report is an update of the working manual part of 'The hydraulic engineering characteristics of estuarine muds' Report No SR77, December 1986, made in the light of research conducted at Hydraulics Research Ltd (HR) and invited comments received from end users in the industry. A considerable research programme has been undertaken by HR since...

Aspects of sediment- and morphodynamics of subtidal deposits of the Oosterschelde (Netherlands)

The present thesis consists of five articles, in all of which links are established between sedimentological aspects of sediments - mostly below the low-water 'line - in the Oosterschelde and either large- or small-scale morphological changes. Large morphological changes and associated movements of sediment which occur in the tidal system of the...

Morphology of the mouth of the river Douro (Portugal)

The river Douro debouches into the Atlantic Ocean near Oporto (Portugal) with a funnel-shaped mouth, partly closed from the ocean with a sand spit. Both the wave-induced longshore sediment transport as the sediment yield of the river are limited by the available quantity of sediment (non-alluvial conditions). The results of some sediment...

Hydro-morphogical study Douro Estuary

The Administracao dos Portos do Douro e Leixoes is confronted with the fact that future expansion of the port area of Leixoes is limited by the surrounding hills and urbanization. One of the alternatives for future expansion might be the creation of port facilities in the Douro estuary, where a relatively large, flat area is available. However,...

Terminal do Seixal: Hydro-morphological study, additional work

Addtional drawings for the mathematical model of the estimated siltation in the access channel to Siderurgia nacional in Seixal (Lisbon).

Hydromorphological study Tagus Estuary, wave penetration model and estuarine flow model

Integrated study on the hydro-morphology of the Tagus outer estuary and the Tagus Inner estuary. Wave penetration calculations, tidal flow calculations and calibration measurements.

Terminal do Seixal: Hydro-morphological study

The calculations of bottom changes presented in our report "Terminal do Seixal Hydro-morphological study", February 1982 were based on a calibrated sediment transport formula. This formula was calibrated with the results of measurements made by Hydronamic in September 1981. These measurements were executed during one of the driest summers...

Terminal do Seixal, hydro-morphological study

Hydronamic has performed a study for the design of the new access channel to the terminal of Siderurgia Nacional at Seixal (near Lisbon) in the Tagus estuary. The report deals with the following subjects: - In chapter 2 a description is given of the mathematical tidal model, the calibration thereof and the final results. - Chapter 3 deals with...

Measurement equipment and techniques used in studying radionuclide movement in the Columbia river estuary

Columbia River estuary is being conducted by the U.S . Geological Survey. The necessity for information on water discharge, suspended and bed sediments, and radioactivity prompted the development of new measurement techniques and equipment suitable for estuarine conditions. Flow velocities and directions throughout the entire depth at a single...

Shell dredging as a factor in estuarine sedimentation

During the past few decades, industrial demands for buried shell have been rapidly increasing. Highway construction, the petrochemical industries, and cement manufacturers are among the major users of shell. Semi-fossil oyster shell is found in tidal embayments in deposits of varying thickness and is dredged from depths varying from two or three...

The penetration of sea water into the Dutch river mouths and estuaries

contains an overview of the state of art of salt penetration knowledge in 1953, presented at the PIANC conference. This Dutch contribution contains three parts: The penetration of sea water into the Dutch river mouths and estuaries( van Veen), Theories on which a method of calculation for the movement of salt water and fresh water in a river is...

Het Eems estuarium

Bundel met twee versies van het plan van Ferguson voor verbetering van het Eemsestuarium, het verslag over berekeningen inzake de waterbeweging in het Eemsestuarium, in verband met zijn normalisatie van Dronkers, het overzicht van de uitkomsten van getijberekeningen betreffende het Eemsestuarium bij verruimd Doekegat en resp. bij geheel of...