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| Titel |
Nonlinear run-ups of regular waves on sloping structures |
| VerfasserIn |
T.-W. Hsu, S.-J. Liang, B.-D. Young, S.-H. Ou |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 12, no. 12 ; Nr. 12, no. 12 (2012-12-21), S.3811-3820 |
| Datensatznummer |
250011269
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| Publikation (Nr.) |
 copernicus.org/nhess-12-3811-2012.pdf |
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| Zusammenfassung |
| For coastal risk mapping, it is extremely important to accurately predict
wave run-ups since they influence overtopping calculations; however,
nonlinear run-ups of regular waves on sloping structures are still not
accurately modeled. We report the development of a high-order numerical
model for regular waves based on the second-order nonlinear Boussinesq
equations (BEs) derived by Wei et al. (1995). We calculated 160 cases of
wave run-ups of nonlinear regular waves over various slope structures.
Laboratory experiments were conducted in a wave flume for regular waves
propagating over three plane slopes: tan α =1/5, 1/4, and 1/3.
The numerical results, laboratory observations, as well as previous datasets
were in good agreement. We have also proposed an empirical formula of the
relative run-up in terms of two parameters: the Iribarren number ξ and
sloping structures tan α. The prediction capability of the proposed
formula was tested using previous data covering the range ξ ≤ 3 and
1/5 ≤ tan α ≤ 1/2 and found to be acceptable. Our study serves as
a stepping stone to investigate run-up predictions for irregular waves and
more complex geometries of coastal structures. |
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