Onderzoeksoutput

Welkom op het expertplatform!

Dit platform verschaft informatie en kennis omtrent de WL expertisedomeinen 'hydraulica en sediment', 'havens en waterwegen', 'waterbouwkundige constructies', 'waterbeheer' en 'kustbescherming' - gaande van WL medewerkers met hun expertise, het curriculum van deze instelling, tot publicaties, projecten, data (op termijn) en evenementen waarin het WL betrokken is.

Het WL onderschrijft het belang van "open access" voor de ontsluiting van haar onderzoeksresultaten. Lees er meer over in ons openaccessbeleid.

log in

• 
  People
• 
  Curriculum
• 
  Projects
• 
  Data sets
• 
  Publications
• 
  Events

[ meld een fout in dit record ]

mandje (1): toevoegen | toon

---

one publication added to basket [118465]

Diagnoses of vertical transport in a three-dimensional finite element model of the tidal circulation around an island White, L.; Deleersnijder, E. (2007). Diagnoses of vertical transport in a three-dimensional finite element model of the tidal circulation around an island. Est., Coast. and Shelf Sci. 74(4): 655-669. dx.doi.org/10.1016/j.ecss.2006.07.014 In: Estuarine, Coastal and Shelf Science. Academic Press: London; New York. ISSN 0272-7714; e-ISSN 1096-0015

---

Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 130381 [ download pdf ]

---

Trefwoorden

Analysis > Mathematical analysis > Numerical analysis > Finite element method Motion > Water motion > Circulation > Water circulation > Shelf dynamics Topographic features > Landforms > Islands Transport processes > Advection > Vertical advection ISEW, Great Barrier Reef, Rattray I. [Marine Regions] Marien/Kust

Author keywords

aged; upwelling; unstructured mesh; finite element method; island wake; Rattray Island

---

Auteurs		Top
White, L. Deleersnijder, E.

---

Abstract

A three-dimensional finite element model is used to investigate the formation of shallow-water eddies in the wake of Rattray Island (Great Barrier Reef, Australia). Field measurements and visual observations show that stable eddies develop in the lee of the island at rising and falling tides. The water turbidity downstream of the island suggests the existence of strong upwelling that would be responsible for carrying bed sediments up to the sea surface. We first propose to look at the upwelling velocity and then use the theory of the age to diagnose vertical transport. The water age is defined as the time elapsed since particles of water left the sea bottom, where the age is prescribed to be zero. Two versions of this diagnosis are considered. Although the model predicts upwelling within the eddies, it is not sufficiently intense to account for vertical transport throughout the water column during the life span of the eddies. As mesh resolution increases, this upwelling does not intensify. However, strong upwelling is then resolved off the island's tips, which is confirmed by the results obtained with the age. This study also shows that the finite element method, together with unstructured meshes, performs well for representing three-dimensional flow past an island.

---

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid

Top | Auteurs

IMIS is ontwikkeld en wordt gehost door het VLIZ.