MORPHOLOGICAL DEVELOPMENT OF A MEGA-NOURISHMENT; FIRST OBSERVATIONS AT THE SAND ENGINE

Matthieu Andréas de Schipper; Sierd de Vries; Marcel Stive; Roeland de Zeeuw; Jantien Rutten; Gerben Ruessink; Stefan Aarninkhof; Carola van Gelder-Maas

doi:10.9753/icce.v34.sediment.73

No. 34 (2014), Sediment Transport and Morphology

No. 34 (2014)

MORPHOLOGICAL DEVELOPMENT OF A MEGA-NOURISHMENT; FIRST OBSERVATIONS AT THE SAND ENGINE

Sediment Transport and Morphology

https://doi.org/10.9753/icce.v34.sediment.73

Published 2014-10-30

Matthieu Andréas de Schipper⁺⁻
Sierd de Vries⁺⁻
Marcel Stive⁺⁻
Roeland de Zeeuw⁺⁻
Jantien Rutten⁺⁻
Gerben Ruessink⁺⁻
Stefan Aarninkhof⁺⁻
Carola van Gelder-Maas⁺⁻

Matthieu Andréas de Schipper

Delft University of Technology

Sierd de Vries

Delft University of Technology

Marcel Stive

Delft University of Technology

Roeland de Zeeuw

Shore Monitoring & Reseach

Jantien Rutten

Utrecht University

Gerben Ruessink

Utrecht University

Stefan Aarninkhof

Royal Boskalis Westminster NV

Carola van Gelder-Maas

Ministry of Infrastructure and the Environment

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Keywords

feeder nourishment
mega nourishment
coastal safety

How to Cite

de Schipper, M. A., de Vries, S., Stive, M., de Zeeuw, R., Rutten, J., Ruessink, G., Aarninkhof, S., & van Gelder-Maas, C. (2014). MORPHOLOGICAL DEVELOPMENT OF A MEGA-NOURISHMENT; FIRST OBSERVATIONS AT THE SAND ENGINE. Coastal Engineering Proceedings, 1(34), sediment.73. https://doi.org/10.9753/icce.v34.sediment.73

Abstract

Large (mega-scale) nourishments have been proposed as a promising alternative for traditional beach and shoreface nourishments, especially for locations with large structural erosion and sufficient sediment to dredge. This paper examines the initial bathymetric evolution of the Sand Engine, a mega-nourishment of 17 million m3 protruding almost 1 km seaward from its surrounding coast. Topographic surveys show that, despite the blunt initial shape of the nourishment, the sediment is reworked into a nearly symmetrical (bell curve like) shape in less than 1.5 years. The cross-shore extent decreased by 150 m in this period which is a reduction of 15 % of its original extent. Simultaneously, the alongshore size of the nourishment increased by 60 % as the sediment is redistributed to the adjacent coasts. This is also reflected in the large 1.6 million m3 loss of sediment on the peninsula. Almost 70 % of this volume is found to accrete in adjacent coastal sections. Although not all sediment loss from the peninsula could be relocated, the findings reveal that the Sand Engine mega nourishment is feeding its surrounding coast substantially.

https://doi.org/10.9753/icce.v34.sediment.73

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References

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Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.

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MORPHOLOGICAL DEVELOPMENT OF A MEGA-NOURISHMENT; FIRST OBSERVATIONS AT THE SAND ENGINE

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