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Runup of solitary waves on a circular Island

Published online by Cambridge University Press:  26 April 2006

Philip L. -F. Liu ,
Yong-Sik Cho ,
Michael J. Briggs ,
Utku Kanoglu  and
Costas Emmanuel Synolakis
Philip L. -F. Liu
Affiliation:
School of Civil and Environmental Engineering Cornell University, Ithaca. NY 14853, USA
Yong-Sik Cho
Affiliation:
School of Civil and Environmental Engineering Cornell University, Ithaca. NY 14853, USA
Michael J. Briggs
Affiliation:
Coastal Engineering Research Center, USAE Waterways Experiment Station, Vicksburg, MS 39180, USA
Utku Kanoglu
Affiliation:
Department of Civil Engineering, University of Southern California, Los Angeles, CA 90089-2531, USA
Costas Emmanuel Synolakis
Affiliation:
Department of Civil Engineering, University of Southern California, Los Angeles, CA 90089-2531, USA
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Abstract

This is a study of the interactions of solitary waves climbing up a circular island. A series of large-scale laboratory experiments with waves of different incident height-to-depth ratios and different crest lengths is described. Detailed two-dimensional run-up height measurements and time histories of surface elevations around the island are presented. A numerical model based on the two-dimensional shallow-water wave equations including runup calculations was developed. Numerical model predictions agreed very well with the laboratory data and the model was used to study wave trapping and the effect of slope. Under certain conditions, enhanced runup and wave trapping on the lee side of the island were observed, suggesting a possible explanation for the devastation reported by field surveys in Babi Island off Flores, Indonesia, and in Okushiri Island, Japan.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 302 , 10 November 1995 , pp. 259 - 285
Copyright
© 1995 Cambridge University Press

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