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Modelling the morphodynamic evolution of Galveston beach, Gulf of Mexico, following Hurricane Ike in 2008
Continental Shelf Research, Volume: 218, Start page: 104373
Swansea University Authors: Antonios Valsamidis, Dominic Reeve
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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...
Published in: | Continental Shelf Research |
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ISSN: | 0278-4343 1873-6955 |
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Elsevier BV
2021
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URI: | https://cronfa.swan.ac.uk/Record/cronfa56322 |
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2025-01-15T14:13:04.9729692 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 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 104373 Elsevier BV 0278-4343 1873-6955 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 COLLEGE CODE Swansea University Not Required AV and DER acknowledge the support of the UK Engineering and Physical Sciences Research Council (EPSRC) through the MORPHINE project (grant EP/N007379/1). 2025-01-15T14:13:04.9729692 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 |
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655e856b5d6b96f6a17a5d8729cca8d5 3e76fcc2bb3cde4ddee2c8edfd2f0082 |
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655e856b5d6b96f6a17a5d8729cca8d5_***_Antonios Valsamidis 3e76fcc2bb3cde4ddee2c8edfd2f0082_***_Dominic Reeve |
author |
Antonios Valsamidis Dominic Reeve |
author2 |
Antonios Valsamidis Jens Figlus Benjamin Ritt Dominic Reeve |
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Continental Shelf Research |
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10.1016/j.csr.2021.104373 |
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Elsevier BV |
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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 |
2021-04-01T14:09:15Z |
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1822139618842116096 |
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11.048626 |