Spatio-Temporal Variability in Accretion and Erosion of Coastal Foredunes in the Netherlands: Regional Climate and Local Topography

Joep G S Keijsers; Ate Poortinga; Michel J P M Riksen; Jerry Maroulis

doi:10.1371/journal.pone.0091115

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Spatio-Temporal Variability in Accretion and Erosion of Coastal Foredunes in the Netherlands: Regional Climate and Local Topography

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Spatio-Temporal Variability in Accretion and Erosion of Coastal Foredunes in the Netherlands: Regional Climate and Local Topography

Joep G S Keijsers, Ate Poortinga, Michel J P M Riksen and Jerry Maroulis

PLoS One, Vol.9(3), e91115

2014

DOI: https://doi.org/10.1371/journal.pone.0091115

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Abstract

temporal variations

foredune erosion

Depending on the amount of aeolian sediment input and dune erosion, dune size and morphology change over time. Since coastal foredunes play an important role in the Dutch coastal defence, it is important to have good insight in the main factors that control these changes. In this paper the temporal variations in foredune erosion and accretion were studied in relation to proxies for aeolian transport potential and storminess using yearly elevation measurements from 1965 to 2012 for six sections of the Dutch coast. Longshore differences in the relative impacts of erosion and accretion were examined in relation to local beach width. The results show that temporal variability in foredune accretion and erosion is highest in narrow beach sections. Here, dune erosion alternates with accretion, with variability displaying strong correlations with yearly values of storminess (maximum sea levels). In wider beach sections, dune erosion is less frequent, with lower temporal variability and stronger correlations with time series of transport potential. In erosion dominated years, eroded volumes decrease from narrow to wider beaches. When accretion dominates, dune-volume changes are relatively constant alongshore. Dune erosion is therefore suggested to control spatial variability in dune-volume changes. On a scale of decades, the volume of foredunes tends to increase more on wider beaches. However, where widths exceed 200 to 300 m, this trend is no longer observed.

Details

Title: Spatio-Temporal Variability in Accretion and Erosion of Coastal Foredunes in the Netherlands: Regional Climate and Local Topography
Authors: Joep G S Keijsers (Author) - Wageningen University, Netherlands
Ate Poortinga (Author) - Wageningen University, Netherlands
Michel J P M Riksen (Author) - Wageningen University, Netherlands
Jerry Maroulis (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Publication details: PLoS One, Vol.9(3), e91115; 11
Publisher: Public Library of Science
Date published: 2014
DOI: 10.1371/journal.pone.0091115
ISSN: 1932-6203
Copyright note: Copyright © 2014 Keijsers et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99448794802621
Output Type: Journal article

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