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Modelling the morphodynamic evolution of Galveston beach, Gulf of Mexico, following Hurricane Ike in 2008

Antonios Valsamidis, Jens Figlus, Benjamin Ritt, Dominic Reeve Orcid Logo

Continental Shelf Research, Volume: 218

Swansea University Authors: Antonios Valsamidis, Dominic Reeve Orcid Logo

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DOI (Published version): 10.1016/j.csr.2021.104373

Abstract

A unique set of field measurements taken along Galveston beach have been compiled to give annual shoreline positions over the period 2010–2016. These have been used, in conjunction with statistical and mathematical modelling, to gain insights into the response of the shoreline after the landfall of...

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Published in: Continental Shelf Research
ISSN: 0278-4343
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56322
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spelling 2022-10-31T18:37:02.2389436 v2 56322 2021-02-25 Modelling the morphodynamic evolution of Galveston beach, Gulf of Mexico, following Hurricane Ike in 2008 655e856b5d6b96f6a17a5d8729cca8d5 Antonios Valsamidis Antonios Valsamidis true false 3e76fcc2bb3cde4ddee2c8edfd2f0082 0000-0003-1293-4743 Dominic Reeve Dominic Reeve true false 2021-02-25 FGSEN A unique set of field measurements taken along Galveston beach have been compiled to give annual shoreline positions over the period 2010–2016. These have been used, in conjunction with statistical and mathematical modelling, to gain insights into the response of the shoreline after the landfall of Hurricane Ike in 2008, which caused extensive erosion and loss of material from the beach. Over the period 2010–2014, a generally accretive trend is observed along the beach. Within this trend, two different patterns are evident. In the area extending westward of South Jetty the accretion rate is fast until April 2011, after which the accretion rate decreases. The remainder of the beach, including the groyne field in front of the city of Galveston, exhibits the greatest accretive trend after April 2011. It is hypothesized that distinct sandbanks lying offshore of Galveston Island were formed during the passage of Hurricane Ike and control these two different patterns of recovery. To test this hypothesis a novel 1-line model, based on linked analytical solutions, was set up to investigate the beach response to various sediment source distributions. The model was tested against existing survey measurements and performed satisfactorily. An exploration of various sediment supply scenarios with the model supports the hypothesis that offshore sediment stores, one distinct source to the south of South Jetty and a diffuse linear source running the length of the groyne field and seawall, were gradually being fed back to the beach by the prevailing wave conditions. Journal Article Continental Shelf Research 218 Elsevier BV 0278-4343 Groyne-field; shoreline evolution; Accretion; One-line model; Galveston beach; Hurricane Ike; Semi-analytical solution 1 4 2021 2021-04-01 10.1016/j.csr.2021.104373 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2022-10-31T18:37:02.2389436 2021-02-25T10:21:25.4629316 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering Antonios Valsamidis 1 Jens Figlus 2 Benjamin Ritt 3 Dominic Reeve 0000-0003-1293-4743 4 56322__19371__7977292c1a3d4ae19c27b59854ee9ed0.pdf 56322.pdf 2021-02-25T16:30:42.9192416 Output 2877520 application/pdf Accepted Manuscript true 2022-02-20T00:00:00.0000000 ©2021 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND) true eng https://creativecommons.org/licenses/by-nc-nd/4.0/
title Modelling the morphodynamic evolution of Galveston beach, Gulf of Mexico, following Hurricane Ike in 2008
spellingShingle Modelling the morphodynamic evolution of Galveston beach, Gulf of Mexico, following Hurricane Ike in 2008
Antonios Valsamidis
Dominic Reeve
title_short Modelling the morphodynamic evolution of Galveston beach, Gulf of Mexico, following Hurricane Ike in 2008
title_full Modelling the morphodynamic evolution of Galveston beach, Gulf of Mexico, following Hurricane Ike in 2008
title_fullStr Modelling the morphodynamic evolution of Galveston beach, Gulf of Mexico, following Hurricane Ike in 2008
title_full_unstemmed Modelling the morphodynamic evolution of Galveston beach, Gulf of Mexico, following Hurricane Ike in 2008
title_sort Modelling the morphodynamic evolution of Galveston beach, Gulf of Mexico, following Hurricane Ike in 2008
author_id_str_mv 655e856b5d6b96f6a17a5d8729cca8d5
3e76fcc2bb3cde4ddee2c8edfd2f0082
author_id_fullname_str_mv 655e856b5d6b96f6a17a5d8729cca8d5_***_Antonios Valsamidis
3e76fcc2bb3cde4ddee2c8edfd2f0082_***_Dominic Reeve
author Antonios Valsamidis
Dominic Reeve
author2 Antonios Valsamidis
Jens Figlus
Benjamin Ritt
Dominic Reeve
format Journal article
container_title Continental Shelf Research
container_volume 218
publishDate 2021
institution Swansea University
issn 0278-4343
doi_str_mv 10.1016/j.csr.2021.104373
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering
document_store_str 1
active_str 0
description A unique set of field measurements taken along Galveston beach have been compiled to give annual shoreline positions over the period 2010–2016. These have been used, in conjunction with statistical and mathematical modelling, to gain insights into the response of the shoreline after the landfall of Hurricane Ike in 2008, which caused extensive erosion and loss of material from the beach. Over the period 2010–2014, a generally accretive trend is observed along the beach. Within this trend, two different patterns are evident. In the area extending westward of South Jetty the accretion rate is fast until April 2011, after which the accretion rate decreases. The remainder of the beach, including the groyne field in front of the city of Galveston, exhibits the greatest accretive trend after April 2011. It is hypothesized that distinct sandbanks lying offshore of Galveston Island were formed during the passage of Hurricane Ike and control these two different patterns of recovery. To test this hypothesis a novel 1-line model, based on linked analytical solutions, was set up to investigate the beach response to various sediment source distributions. The model was tested against existing survey measurements and performed satisfactorily. An exploration of various sediment supply scenarios with the model supports the hypothesis that offshore sediment stores, one distinct source to the south of South Jetty and a diffuse linear source running the length of the groyne field and seawall, were gradually being fed back to the beach by the prevailing wave conditions.
published_date 2021-04-01T04:11:11Z
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