Operative Sluice at Thyborøn Channel

Knudsen, Pernille ; Skov, Kristian Thaarup ; Sørensen, Lasse ; Thomsen, Rune ; Bechgaard, Christoffer Kjær ; Bartolome Criado, Maria

2. term

Water and Environmental Engineering , Master

2013

2013-05-31

83

Denne rapport undersøger, hvordan en operativ sluse i Thyborøn Kanal kan påvirke oversvømmelsesrisikoen omkring Limfjorden og vandkvaliteten i fjorden. Projektet analyserer både placering (øst kontra vest for Thyborøn) og driftsstrategier for slusen gennem scenariebaseret hydrodynamisk modellering af stormfloder. Derudover vurderes konsekvenserne for vandkvalitet med to tilgange: en simpel boksmodeI, der giver et første overslag over ændret vandskifte, og en mere detaljeret tredimensionel model (Mike 3 FM) med fokus på blandt andet kvælstofkoncentrationer. Resultaterne peger på, at en sluse placeret vest for Thyborøn er nødvendig for at beskytte byen effektivt mod stormflod, og at driften bør styres efter vejrudsigter, med lukning 2–7 dage før forventede storme. Vandkvalitetsvurderingen viser, at boksmodeIen indikerer negative effekter af en sluse, mens den tredimensionelle model peger på mulige forbedringer i vandkvaliteten, herunder reducerede kvælstofkoncentrationer, hvis en sluse etableres. Konklusionerne bygger på de gennemførte scenarier og modelkalibreringer i projektet.

This report examines how an operative sluice in the Thyborøn Channel may affect flood risk around the Limfjord and the fjord’s water quality. The study evaluates both the sluice’s location (east versus west of Thyborøn) and operational strategies using scenario-based hydrodynamic modeling of storm surges. Effects on water quality are assessed with two approaches: a simple box model providing a first estimate of altered exchange, and a more detailed three-dimensional model (Mike 3 FM) focusing, among other aspects, on nitrogen concentrations. The results indicate that siting the sluice west of Thyborøn is required to effectively protect the town from storm surges, and that operation should be guided by weather forecasts, with closure 2–7 days before expected storms. For water quality, the box model suggests negative impacts, whereas the three-dimensional model points to possible improvements, including reduced nitrogen concentrations, if a sluice is constructed. These conclusions are drawn from the scenarios and model calibrations carried out in the project.

[This summary has been generated with the help of AI directly from the project (PDF)]

Thyborøn

Download
View record in AAU Student Projects

Knudsen, Pernille:

• Climate adaption of Aalborg Centrum (2014)