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Investigation of deep sea shelf sandbank dynamics driven by highly energetic tidal flows

Antonia Chatzirodou, Harshinie Karunarathna Orcid Logo, Dominic Reeve Orcid Logo

Marine Geology, Volume: 380, Pages: 245 - 263

Swansea University Authors: Harshinie Karunarathna Orcid Logo, Dominic Reeve Orcid Logo

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Abstract

In this paper we describe a numerical modelling study carried out to investigate the prevailing sediment dynamics of two large sandbanks located at a site designated for future development of tidal stream energy extraction, in the Inner Sound Channel of Pentland Firth, Scotland, UK. A calibrated and...

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Published in: Marine Geology
ISSN: 0025-3227
Published: Elsevier BV 2016
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa30506
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Abstract: In this paper we describe a numerical modelling study carried out to investigate the prevailing sediment dynamics of two large sandbanks located at a site designated for future development of tidal stream energy extraction, in the Inner Sound Channel of Pentland Firth, Scotland, UK. A calibrated and validated 3D Delft3D hydrodynamic model covering Pentland Firth channel was combined with a morphodynamic model. The sea bed changes occurring around the sandbanks during a period of two spring-neap tidal cycles are described and discussed in detail. It was found that both sandbanks, which are located in a deep shelf region (depths > 18 m), are morphodynamically active and their existence and integrity are strongly linked with the existing hydrodynamic regime.
Keywords: Pentland Firth; Tidal energy extraction; Sandbanks; Delft3D model; Sediment transport modelling; Morphodynamics
College: College of Engineering
Start Page: 245
End Page: 263