Quantifying the influence of transitions on grass cover erosion by overtopping waves

Jord Warmink, Vera Maria van Bergeijk, Marc Frankena, Paul Van Steeg, Suzanne Hulscher

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Abstract

Transitions in vegetated dike covers, such as geometry changes or roughness differences, are identified as weak spots in dikes for grass cover erosion by wave overtopping. Although several erosion models exist to model grass cover erosion on dikes, it is unclear how the effect of transitions on grass cover erosion must be included in these models. Therefore, we have developed a model approach to analyze the effects of transitions on grass cover erosion using field experimental data and to derive representative influence factors for one transition type. The model approach has been applied to the transition at the landward toe where the slope changes to a horizontal plane. The model approach is general applicable and can be transferred easily to other transitions. The derived factors can be used to improve predictions of dike cover erosion near transitions.
Original languageEnglish
Title of host publicationCoastal Engineering 2020
Number of pages8
Edition36v
DOIs
Publication statusPublished - 31 Dec 2020
Event37th International Conference on Coastal Engineering, ICCE 2020 - Virtual Conference
Duration: 13 Sep 202018 Sep 2020
Conference number: 37

Publication series

NameInternational Conference Proceedings of Coastal Engineering
PublisherAmerican Society of Civil Engineers
Volume36
ISSN (Print)0589-087X

Conference

Conference37th International Conference on Coastal Engineering, ICCE 2020
Abbreviated titleICCE 2020
CityVirtual Conference
Period13/09/2018/09/20

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