Four-Dimensional Investigation of Gravel Beach Ridge Accretion and 50 Years of Beach Recharge at Dungeness, UK, Using Historic Images, GPR and Lidar (HIGL)

Dungeness is a cuspate foreland on the south coast of England that is the largest shingle feature in Europe and includes hundreds of beach ridges. It is also the location of two nuclear power stations that were constructed in the 1960s. The dominant southwest waves cause longshore drift from west to...

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Autores principales:	Charlie S. Bristow, Lucy Buck, Maria Inggrid
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	shingle beach recharge beach nourishment sediment budget lidar ground-penetrating radar Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/136a25e58cbd44098499e0b65fb5c4fe
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spelling	oai:doaj.org-article:136a25e58cbd44098499e0b65fb5c4fe2021-11-11T15:16:11ZFour-Dimensional Investigation of Gravel Beach Ridge Accretion and 50 Years of Beach Recharge at Dungeness, UK, Using Historic Images, GPR and Lidar (HIGL)10.3390/app1121102192076-3417https://doaj.org/article/136a25e58cbd44098499e0b65fb5c4fe2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10219https://doaj.org/toc/2076-3417Dungeness is a cuspate foreland on the south coast of England that is the largest shingle feature in Europe and includes hundreds of beach ridges. It is also the location of two nuclear power stations that were constructed in the 1960s. The dominant southwest waves cause longshore drift from west to east, eroding the southwest side of Dungeness, accompanied by accretion on the east side. A record of this eastward movement and sediment accretion is preserved by the shingle beach ridges. The power stations are located on the eroding southwestern side of the ness, and a system of beach recharge has been used to move shingle from the downdrift, east-facing shore to the updrift, southwest-facing shore to protect the power stations from coastal erosion. We use a novel combination of historic images, ground-penetrating radar (GPR), and Lidar (HIGL) to investigate accretion and beach ridges at Dungeness during the past 80 years. We report changes in accretion along the coast and use GPR to determine the thickness of beach gravels. The amount of accretion, represented by the width of the backshore, decreases downdrift from south to north. The number of beach ridges preserved also decreases from south to north. By combining the shingle thickness from GPR with elevation data from Lidar surveys and records of beach accretion measured from aerial images, we estimate the volume and mass of gravel that has accumulated at Dungeness. Historic rates of beach accretion are similar to recent rates, suggesting that the 55 years of beach recharge have had little impact on the longer-term accretion downdrift.Charlie S. BristowLucy BuckMaria InggridMDPI AGarticleshinglebeach rechargebeach nourishmentsediment budgetlidarground-penetrating radarTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10219, p 10219 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	shingle beach recharge beach nourishment sediment budget lidar ground-penetrating radar Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	shingle beach recharge beach nourishment sediment budget lidar ground-penetrating radar Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Charlie S. Bristow Lucy Buck Maria Inggrid Four-Dimensional Investigation of Gravel Beach Ridge Accretion and 50 Years of Beach Recharge at Dungeness, UK, Using Historic Images, GPR and Lidar (HIGL)
description	Dungeness is a cuspate foreland on the south coast of England that is the largest shingle feature in Europe and includes hundreds of beach ridges. It is also the location of two nuclear power stations that were constructed in the 1960s. The dominant southwest waves cause longshore drift from west to east, eroding the southwest side of Dungeness, accompanied by accretion on the east side. A record of this eastward movement and sediment accretion is preserved by the shingle beach ridges. The power stations are located on the eroding southwestern side of the ness, and a system of beach recharge has been used to move shingle from the downdrift, east-facing shore to the updrift, southwest-facing shore to protect the power stations from coastal erosion. We use a novel combination of historic images, ground-penetrating radar (GPR), and Lidar (HIGL) to investigate accretion and beach ridges at Dungeness during the past 80 years. We report changes in accretion along the coast and use GPR to determine the thickness of beach gravels. The amount of accretion, represented by the width of the backshore, decreases downdrift from south to north. The number of beach ridges preserved also decreases from south to north. By combining the shingle thickness from GPR with elevation data from Lidar surveys and records of beach accretion measured from aerial images, we estimate the volume and mass of gravel that has accumulated at Dungeness. Historic rates of beach accretion are similar to recent rates, suggesting that the 55 years of beach recharge have had little impact on the longer-term accretion downdrift.
format	article
author	Charlie S. Bristow Lucy Buck Maria Inggrid
author_facet	Charlie S. Bristow Lucy Buck Maria Inggrid
author_sort	Charlie S. Bristow
title	Four-Dimensional Investigation of Gravel Beach Ridge Accretion and 50 Years of Beach Recharge at Dungeness, UK, Using Historic Images, GPR and Lidar (HIGL)
title_short	Four-Dimensional Investigation of Gravel Beach Ridge Accretion and 50 Years of Beach Recharge at Dungeness, UK, Using Historic Images, GPR and Lidar (HIGL)
title_full	Four-Dimensional Investigation of Gravel Beach Ridge Accretion and 50 Years of Beach Recharge at Dungeness, UK, Using Historic Images, GPR and Lidar (HIGL)
title_fullStr	Four-Dimensional Investigation of Gravel Beach Ridge Accretion and 50 Years of Beach Recharge at Dungeness, UK, Using Historic Images, GPR and Lidar (HIGL)
title_full_unstemmed	Four-Dimensional Investigation of Gravel Beach Ridge Accretion and 50 Years of Beach Recharge at Dungeness, UK, Using Historic Images, GPR and Lidar (HIGL)
title_sort	four-dimensional investigation of gravel beach ridge accretion and 50 years of beach recharge at dungeness, uk, using historic images, gpr and lidar (higl)
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/136a25e58cbd44098499e0b65fb5c4fe
work_keys_str_mv	AT charliesbristow fourdimensionalinvestigationofgravelbeachridgeaccretionand50yearsofbeachrechargeatdungenessukusinghistoricimagesgprandlidarhigl AT lucybuck fourdimensionalinvestigationofgravelbeachridgeaccretionand50yearsofbeachrechargeatdungenessukusinghistoricimagesgprandlidarhigl AT mariainggrid fourdimensionalinvestigationofgravelbeachridgeaccretionand50yearsofbeachrechargeatdungenessukusinghistoricimagesgprandlidarhigl
_version_	1718435735468507136

Four-Dimensional Investigation of Gravel Beach Ridge Accretion and 50 Years of Beach Recharge at Dungeness, UK, Using Historic Images, GPR and Lidar (HIGL)

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