Idealised modelling of the influence of cohesive sediment on sand wave dynamics

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Abstract

Bed form dynamics have long been studied due to their relevance for coastal management. For instance, bed form growth and migration may lead to the filling of navigation channels, re-exposure of cables and pipelines, and endanger the integrity of foundations of off-shore installations (Németh et al., 2003). This study focuses on the dynamics of tidal sand waves (also known as tidal sand dunes), i.e. rhythmic bed features with a typical height of several meters, a wavelength of hundreds of meters and an annual migration of multiple meters. They are commonly found in shallow shelf seas, for instance in the North Sea, the Baltic Sea and the Irish Sea (Van der Meijden et al., 2023).
Sand waves have been explained as free instabilities of the sea bed, implying they will inherently
Original languageEnglish
Title of host publication21st International conference on the physics of estuaries and coastal seas (PECS 2024)
Subtitle of host publicationBook of abstracts
Place of PublicationBordeaux
PublisherPhysics of Estuaries and Coastal Seas (PECS)
Pages177-179
Number of pages2
Publication statusPublished - 2024
Event21st International conference on the physics of estuaries and coastal seas, PECS 2024 - University of Bordeaux, Bordeaux, France
Duration: 23 Sept 202427 Sept 2024

Conference

Conference21st International conference on the physics of estuaries and coastal seas, PECS 2024
Country/TerritoryFrance
CityBordeaux
Period23/09/2427/09/24

Keywords

  • sand waves
  • cohesive sediment
  • process-based morphodynamic
  • Linear stability analysis

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