Landslide tsunamis propagating along a plane beach

A forced two-horizontal-dimension analytical model is developed to investigate the distinguishing physical features of landslide-induced tsunamis generated and propagating on a plane beach. The analytical solution is employed to study the wave field at small times after the landslide motion starts....

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Bibliographic Details
Published in:Journal of fluid mechanics 2008-03, Vol.598, p.107-119
Main Authors: SAMMARCO, P., RENZI, E.
Format: Article
Language:English
Subjects:
Beaches
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Exact sciences and technology
Fluid mechanics
Landslides
Landslides & mudslides
Mathematical models
Natural hazards: prediction, damages, etc
Tidal waves
Tsunamis
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Summary:A forced two-horizontal-dimension analytical model is developed to investigate the distinguishing physical features of landslide-induced tsunamis generated and propagating on a plane beach. The analytical solution is employed to study the wave field at small times after the landslide motion starts. At larger times, the occurrence of transient edge waves travelling along the shoreline is demonstrated, showing the differences with the transient waves propagating over a bottom of constant depth. Results are satisfactorily compared with available experimental data. Finally, the validity of non-forced numerical models is discussed.
ISSN:0022-1120
1469-7645
DOI:10.1017/S0022112007009731