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Morphological development of a small-scale beach nourishment in a non-tidal area

Adell, Anna LU orcid ; Kroon, Aart ; Almström, Björn LU ; Larson, Magnus LU and Hallin, Caroline LU (2023)
Abstract
Combining hard and soft costal protection solutions can be an appropriate measure to enhance structure lifetime. This study aims to quantify the morphological evolution of the nourished stretch and adjacent coastlines. A small-scale beach nourishment has been performed in front of a rock revetment at site in Faxe Ladeplads in Zealand, Denmark. The overall objective is to learn more about the dynamics of small-scale nourishments in low energy environments. Monitoring techniques include repeated topographic (Trimble RTK-GPS, drone surveying) and bathymetric (single beam) measurements. To measure the hydrodynamic conditions two surface acceleration buoys deployed at -4 and -7 m water depth were used. Sediment volumes from nourishments of size... (More)
Combining hard and soft costal protection solutions can be an appropriate measure to enhance structure lifetime. This study aims to quantify the morphological evolution of the nourished stretch and adjacent coastlines. A small-scale beach nourishment has been performed in front of a rock revetment at site in Faxe Ladeplads in Zealand, Denmark. The overall objective is to learn more about the dynamics of small-scale nourishments in low energy environments. Monitoring techniques include repeated topographic (Trimble RTK-GPS, drone surveying) and bathymetric (single beam) measurements. To measure the hydrodynamic conditions two surface acceleration buoys deployed at -4 and -7 m water depth were used. Sediment volumes from nourishments of size 70,000 m3 and 20,000 m3 redistributed relatively quickly. The nourished material built up the cross-shore profile and a longshore bar in this area, and distributed sediments in the direction of the dominant littoral drift (SW). Results suggest that the morphological evolution of the nourishment is dependent on local hydrodynamic conditions and local geomorphology. These findings have implications for the main objectives of preventing wave overtopping onto an adjacent coastal road during extreme events and restoring a beach for recreation. (Less)
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author
; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
The Proceedings of the Coastal Sediments 2023
publisher
World Scientific Publishing
DOI
10.1142/9789811275135_0011
project
Climate adaptation of near-coastal roads and railroads
language
English
LU publication?
yes
id
386f7b44-3b16-45bb-be43-91823d52cf07
date added to LUP
2023-05-03 09:19:27
date last changed
2023-05-08 09:04:35
@inproceedings{386f7b44-3b16-45bb-be43-91823d52cf07,
  abstract     = {{Combining hard and soft costal protection solutions can be an appropriate measure to enhance structure lifetime. This study aims to quantify the morphological evolution of the nourished stretch and adjacent coastlines. A small-scale beach nourishment has been performed in front of a rock revetment at site in Faxe Ladeplads in Zealand, Denmark. The overall objective is to learn more about the dynamics of small-scale nourishments in low energy environments. Monitoring techniques include repeated topographic (Trimble RTK-GPS, drone surveying) and bathymetric (single beam) measurements. To measure the hydrodynamic conditions two surface acceleration buoys deployed at -4 and -7 m water depth were used. Sediment volumes from nourishments of size 70,000 m3 and 20,000 m3 redistributed relatively quickly. The nourished material built up the cross-shore profile and a longshore bar in this area, and distributed sediments in the direction of the dominant littoral drift (SW). Results suggest that the morphological evolution of the nourishment is dependent on local hydrodynamic conditions and local geomorphology. These findings have implications for the main objectives of preventing wave overtopping onto an adjacent coastal road during extreme events and restoring a beach for recreation.}},
  author       = {{Adell, Anna and Kroon, Aart and Almström, Björn and Larson, Magnus and Hallin, Caroline}},
  booktitle    = {{The Proceedings of the Coastal Sediments 2023}},
  language     = {{eng}},
  publisher    = {{World Scientific Publishing}},
  title        = {{Morphological development of a small-scale beach nourishment in a non-tidal area}},
  url          = {{https://lup.lub.lu.se/search/files/146075252/Adell_et_al_2023.pdf}},
  doi          = {{10.1142/9789811275135_0011}},
  year         = {{2023}},
}