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Numerical modelling of hydrodynamic and morphodynamic response of a meso-tidal estuary inlet to the impacts of global climate variabilities

Yunzhu Yin, Harshinie Karunarathna Orcid Logo, Dominic Reeve Orcid Logo

Marine Geology, Volume: 407, Pages: 229 - 247

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

Abstract

Tidal inlets, a common feature along coastlines globally, can be significantly affected by the impacts of global climate variabilities. Computational models provide the best opportunity to assess future changes to the dynamics of inlet systems. In this paper, the morphodynamic response of a gravel-d...

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Published in: Marine Geology
ISSN: 00253227
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa45567
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spelling 2019-01-08T17:01:58.6212619 v2 45567 2018-11-09 Numerical modelling of hydrodynamic and morphodynamic response of a meso-tidal estuary inlet to the impacts of global climate variabilities 0d3d327a240d49b53c78e02b7c00e625 0000-0002-9087-3811 Harshinie Karunarathna Harshinie Karunarathna true false 3e76fcc2bb3cde4ddee2c8edfd2f0082 0000-0003-1293-4743 Dominic Reeve Dominic Reeve true false 2018-11-09 CIVL Tidal inlets, a common feature along coastlines globally, can be significantly affected by the impacts of global climate variabilities. Computational models provide the best opportunity to assess future changes to the dynamics of inlet systems. In this paper, the morphodynamic response of a gravel-dominated meso-tidal estuary inlet to Sea Level Rise (SLR) is discussed based on three future SLR scenarios. It uses a process-based computational coastal area model. The study's test site is the meso-tidal Deben Estuary inlet in the UK; it is very morphodynamically active and has a unique sediment environment, is used as the test site of this study. The modelling results reveal that the morphological response of Deben inlet is sensitive to the SLR scenario. Rising sea levels give rise to increased hydrodynamic and morphodynamic activities at and around the inlet. The ebb delta, which is a prominent morphodynamic feature of this inlet, shows greater instability as a result of increased sea levels. It is possible that the inlet may deviate significantly from its current morphodynamic regime in the future as a result of the changes imposed by higher sea levels. Journal Article Marine Geology 407 229 247 00253227 Deben EstuaryInlet, Meso-tidal, Morphodynamics, Computational modelling, Sea level rise, Climate change 31 12 2019 2019-12-31 10.1016/j.margeo.2018.11.005 COLLEGE NANME Civil Engineering COLLEGE CODE CIVL Swansea University 2019-01-08T17:01:58.6212619 2018-11-09T09:52:19.8457689 College of Engineering Engineering Yunzhu Yin 1 Harshinie Karunarathna 0000-0002-9087-3811 2 Dominic Reeve 0000-0003-1293-4743 3 0045567-09112018100105.pdf yin2018(2).pdf 2018-11-09T10:01:05.4830000 Output 33251490 application/pdf Accepted Manuscript true 2019-11-08T00:00:00.0000000 true eng
title Numerical modelling of hydrodynamic and morphodynamic response of a meso-tidal estuary inlet to the impacts of global climate variabilities
spellingShingle Numerical modelling of hydrodynamic and morphodynamic response of a meso-tidal estuary inlet to the impacts of global climate variabilities
Harshinie, Karunarathna
Dominic, Reeve
title_short Numerical modelling of hydrodynamic and morphodynamic response of a meso-tidal estuary inlet to the impacts of global climate variabilities
title_full Numerical modelling of hydrodynamic and morphodynamic response of a meso-tidal estuary inlet to the impacts of global climate variabilities
title_fullStr Numerical modelling of hydrodynamic and morphodynamic response of a meso-tidal estuary inlet to the impacts of global climate variabilities
title_full_unstemmed Numerical modelling of hydrodynamic and morphodynamic response of a meso-tidal estuary inlet to the impacts of global climate variabilities
title_sort Numerical modelling of hydrodynamic and morphodynamic response of a meso-tidal estuary inlet to the impacts of global climate variabilities
author_id_str_mv 0d3d327a240d49b53c78e02b7c00e625
3e76fcc2bb3cde4ddee2c8edfd2f0082
author_id_fullname_str_mv 0d3d327a240d49b53c78e02b7c00e625_***_Harshinie, Karunarathna_***_0000-0002-9087-3811
3e76fcc2bb3cde4ddee2c8edfd2f0082_***_Dominic, Reeve_***_0000-0003-1293-4743
author Harshinie, Karunarathna
Dominic, Reeve
author2 Yunzhu Yin
Harshinie Karunarathna
Dominic Reeve
format Journal article
container_title Marine Geology
container_volume 407
container_start_page 229
publishDate 2019
institution Swansea University
issn 00253227
doi_str_mv 10.1016/j.margeo.2018.11.005
college_str College of Engineering
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hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 1
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description Tidal inlets, a common feature along coastlines globally, can be significantly affected by the impacts of global climate variabilities. Computational models provide the best opportunity to assess future changes to the dynamics of inlet systems. In this paper, the morphodynamic response of a gravel-dominated meso-tidal estuary inlet to Sea Level Rise (SLR) is discussed based on three future SLR scenarios. It uses a process-based computational coastal area model. The study's test site is the meso-tidal Deben Estuary inlet in the UK; it is very morphodynamically active and has a unique sediment environment, is used as the test site of this study. The modelling results reveal that the morphological response of Deben inlet is sensitive to the SLR scenario. Rising sea levels give rise to increased hydrodynamic and morphodynamic activities at and around the inlet. The ebb delta, which is a prominent morphodynamic feature of this inlet, shows greater instability as a result of increased sea levels. It is possible that the inlet may deviate significantly from its current morphodynamic regime in the future as a result of the changes imposed by higher sea levels.
published_date 2019-12-31T04:09:23Z
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