IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Flood risk management and adaptation : Predicting flooding events on gravel coasts
Predicting flooding events on gravel coasts
Author : ROBERT MCCALL1, GERD MASSELINK2, TIMOTHY POATE2, DANO ROELVINK3
ABSTRACT
Gravel beaches and barriers occur on many high-latitude, wave-dominated coasts across the world. Due to their natural ability to dissipate large amounts of wave energy, gravel coasts are widely regarded as an effective and sustainable form of coastal defense. However, despite their usefulness as a form of coastal defense, relatively little research has been directed towards understanding the response of gravel beaches to storms, leading to a lack of understanding of the physical processes on gravel beaches. At present, coastal managers have very limited guidance in choosing coastal management strategies to prevent flooding during storms. In this paper we address this issue by investigating typical flood defense strategies at a natural gravel beach in the UK using a newly-developed a process-based morphodynamic model called XBeach-G, which has previously been shown to have good skill in simulating hydrodynamics and morphodynamics on gravel beaches during storms. Application of the process-based model warns of an overestimation of coastal flooding resilience in swell-dominated conditions along the southern UK coastline and highlights current beach reprofiling schemes as unsustainable, in particular with respect to extreme storm events.
File Size : 175,264 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Flood risk management and adaptation
Date Published : 14/08/2015
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