Effect of asymmetry of incident wave on the maximum runup height

Shoaling and runup of long waves on a beach form a classical task for coastal oceanography and engineering. Though many empirical and theoretical formulae have been developed in this field, most of them are targeted to typical waves and situations, while the greatest hazard is caused by extreme even...

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Bibliographic Details
Published in:Journal of coastal research 2013-01, Vol.1 (65), p.207-207
Main Authors: Didenkulova, Ira, Denissenko, Petr, Rodin, Artem, Pelinovsky, Efim
Format: Article
Language:English
Subjects:
Asymmetry
Beaches
Catastrophe theory
Catastrophic events
Coastal
Coastal oceanography
Coasts
Extreme weather
Fluid mechanics
Incident waves
Oceanography
Tasks
Tsunamis
Wave height
Wave runup
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Summary:Shoaling and runup of long waves on a beach form a classical task for coastal oceanography and engineering. Though many empirical and theoretical formulae have been developed in this field, most of them are targeted to typical waves and situations, while the greatest hazard is caused by extreme events, such as, for example, extreme storms and catastrophic tsunamis. From this point of view it was shown theoretically that one of the most important parameters which influence the wave runup height is the steepness of the incident wave front and the asymmetry of the incident wave. It helped to provide a simple explanation to the extreme runup observed during the catastrophic 2004 Indonesian tsunami event. The series of experiments are aimed to validate the theoretical formulae for runup height of asymmetric waves. The obtained results are in a good agreement with theoretical predictions and corresponding formulae are recommended to be considered in wave forecasts.
ISSN:0749-0208
1551-5036
DOI:10.2112/SI65-036