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Earth Surface Dynamics An interactive open-access journal of the European Geosciences Union

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https://doi.org/10.5194/esurf-2018-37
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
14 May 2018
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Earth Surface Dynamics (ESurf).
Accommodation space indicates dune development potential along an urbanized and frequently nourished coastline
Corjan Nolet and Michel J. P. M. Riksen Soil Physics and Land Management Group, Wageningen University, P.O. Box 47 6700 AA Wageningen, the Netherlands
Abstract. With densely populated areas well below mean sea level, the Netherlands relies heavily on its dunes to ensure coastal safety. About half of the sandy coastline, however, is subject to structural marine erosion and requires frequent sand nourishments as a counteractive measure. A key component of present-day coastal safety policy is creating favorable conditions for natural dune development. These conditions essentially involve a (1) steady supply of wind-blown sand towards (2) wide accommodation space where sand can accumulate and dunes are sheltered from storm surge impact. This paper examines to what extent an experimental mega-scale beach nourishment (termed Zandmotor in Dutch) has contributed to creating accommodation space favorable for dune development. Using publicly available airborne Lidar data and Sentinel-2 satellite imagery, favorable accommodation space is identified by comparing recent changes in coastal morphology against dune vegetation cover dynamics. With a focus on European marram grass (Ammophila arenaria) as the most prominent dune-building species, this paper demonstrates that the Zandmotor supports an especially high potential for incipient (embryo) dunes to develop as most of its favorable accommodation space is located on the beach. However, considering persistent anthropogenic disturbances arising from recreation, leisure and nature management, dune development along this urbanized coastline may not reach its full potential.
Citation: Nolet, C. and Riksen, M. J. P. M.: Accommodation space indicates dune development potential along an urbanized and frequently nourished coastline, Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2018-37, in review, 2018.
Corjan Nolet and Michel J. P. M. Riksen
Corjan Nolet and Michel J. P. M. Riksen
Corjan Nolet and Michel J. P. M. Riksen

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Short summary
This paper examines how an experimental mega-scale beach nourishment (Sand Motor) contributes to creating favorable conditions for dune development. These conditions, involving a steady supply of wind-blown sand towards space where it can accumulate, are identified using publicly available remote sensing data. It is demonstrated that the Sand Motor supports a high potential for new dunes to develop, but human disturbances may hamper this development which negatively impacts coastal safety.
This paper examines how an experimental mega-scale beach nourishment (Sand Motor) contributes to...
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