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Overland flow of broken solitary waves over a two-dimensional coastal plane

  • Landslides, rock falls or related subaerial and subaqueous mass slides can generate devastating impulse waves in adjacent waterbodies. Such waves can occur in lakes and fjords, or due to glacier calving in bays or at steep ocean coastlines. Infrastructure and residential houses along coastlines of those waterbodies are often situated on low elevation terrain, and are potentially at risk from inundation. Impulse waves, running up a uniform slope and generating an overland flow over an initially dry adjacent horizontal plane, represent a frequently found scenario, which needs to be better understood for disaster planning and mitigation. This study presents a novel set of large-scale flume test focusing on solitary waves propagating over a 1:14.5 slope and breaking onto a horizontal section. Examining the characteristics of overland flow, this study gives, for the first time, insight into the fundamental process of overland flow of a broken solitary wave: its shape and celerity, as well as its momentum when wave breaking has taken place beforehand.

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Author:Hajo von Häfen, Clemens Krautwald, Jacob Stolle, Daniel Bernhard BungORCiD, Nils Goseberg
Parent Title (English):Coastal Engineering
Place of publication:Amsterdam
Document Type:Article
Year of Completion:2022
Date of the Publication (Server):2024/01/19
Tag:Hazard assessment; Landslide tsunamis; Large scale tests; Overland flow; Solitary waves
Length:14 Seiten
Institutes:FH Aachen / Fachbereich Bauingenieurwesen
collections:Verlag / Elsevier