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Field measurements of wave overtopping at the rubble mound breakwater of Rome-Ostia yacht harbour
Briganti, R.; Bellotti, G.; Franco, L.; De Rouck, J.; Geeraerts, J. (2005). Field measurements of wave overtopping at the rubble mound breakwater of Rome-Ostia yacht harbour. Coast. Eng. 52(12): 1155-1174. dx.doi.org/10.1016/j.coastaleng.2005.07.001
In: Coastal Engineering: An International Journal for Coastal, Harbour and Offshore Engineers. Elsevier: Amsterdam; Lausanne; New York; Oxford; Shannon; Tokyo. ISSN 0378-3839; e-ISSN 1872-7379, meer
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| Trefwoord |
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| Author keywords |
wave overtopping; field data; rubble mound breakwater; prototype |
| Auteurs | | Top |
- Briganti, R.
- Bellotti, G.
- Franco, L.
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- De Rouck, J.
- Geeraerts, J.
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| Abstract |
This paper describes a new station for full-scale measurement of wave overtopping at the Rome yacht harbour rubble mound breakwater in Ostia (Italy) and the results of the successful first measurement campaign carried out during the winter season 2003-2004. The equipment and the research activities were supported by the EU project CLASH, focusing on scale effects for wave overtopping at coastal structures. The site is characterized by a very small tidal range, a long shallow foreshore and depth-limited breaking waves which interact with a shallow sloping porous rock structure. Overtopping water is collected by a steel tank installed on the crown slab behind the parapet wall. The measurement of water level variation inside the tank by means of two pressure transducers allows the calculation of individual overtopping volumes. Incident waves, sea levels and wind are also measured. During seven independent storms, more than 400 individual overtopping events were recorded and about 86 h of valid data are available. This extensive dataset is presented, discussed and then used for comparison with two commonly used overtopping prediction formulae based on small-scale model tests showing their tendency to underestimate the prototype results. A strong correlation between the hourly mean overtopping discharge and corresponding maximum volume is also presented. The paper generally confirms the validity of the approach used in Troch et al. (2004) [Troch, P., Geeraets, J., Van de Walle, B., De Rouck, J., Van Damme, L., Allsop, W, Franco, L., 2004. Full-scale wave overtopping measurements on the Zeebrugge rubble mound breakwater. Coastal Engineering 51, 609-628] for field measurement of wave overtopping. |
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