Maximum Fluid Forces in the Tsunami Runup Zone
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VIEW THE REPLYPublication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 132, Issue 6
Abstract
The analytic and numeric models of the fully nonlinear shallow-water theory are used to compute the temporal and spatial variations of water depth and flow velocity of tsunami runup on a uniformly sloping beach, from which the momentum flux is evaluated. The momentum flux is proportional to the drag force for a surface-piercing stationary object of the unit breadth being placed vertically over the flow depth. The envelope of the extreme momentum flux in the runup/rundown process is established. The actual force acting on a specific object must be computed with its appropriate drag coefficient.
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Acknowledgments
David George provided the numerical results of a bore runup presented in Figs. 1 and 2. This work was supported by the National Tsunami Hazard Mitigation Program through Washington State Military Department, and by the U.S. National Science Foundation (Grant No. NSFCMS-0245206).
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 132 • Issue 6 • November 2006
Pages: 496 - 500
Copyright
© 2006 ASCE.
History
Received: Jan 11, 2005
Accepted: Sep 13, 2005
Published online: Nov 1, 2006
Published in print: Nov 2006
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