Hydrodynamics around an Artificial Surfing Reef at Leirosa, Portugal
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 138, Issue 3
Abstract
As a new alternative countermeasure to protect the coastal zone and to increase the surfing possibilities in the Leirosa area of Portugal, multifunctional artificial reefs were investigated numerically in this paper. The primary surfing parameters used in the design (i.e., breaker type, peel angle, wave height at breaking, and currents around the artificial reef) were analyzed. The reef functionality was also analyzed for coastal protection. Two reef geometries with different reef angles of 45 and 66° were tested, considering two design wave conditions (storm and common) and two tide levels (medium and low). Simulations show that both reef geometries are adequate for surfing, although the reef angle of 66° is more suitable for standard surfers, and the 45° angle is more adequate for advanced/professional surfers. A morphodynamic study should be carried out to analyze the efficiency of the artificial surf reef for coastal protection.
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Acknowledgments
This project has been supported by the Fundação para a Ciência e a Tecnologia through grants PTDC/ECM/66516/2006 and PTDC/ECM/67411/2006.
References
Antunes do Carmo, J. S., Schreck, Reis, C., and Freitas, H. (2010). “Working with nature by protecting sand dunes: Lessons learned.” J. Coastal Res.JCRSEK, 26(6), 1068–1078,.
Barber, N. F. (1961). “The directional resolving power of an array of wave detectors.” Ocean wave spectra, Prentice Hall, Upper Saddle River, NJ, 137–150.
Battjes, J. A. (1974). “Surf similarity.” Proc., 14th Int. Conf. on Coastal Engineering, ASCE, Reston, VA, 466–479.
Beamsley, B., and Black, K. (2003). “The effect of offshore reefs on inshore surfing conditions.” Proc., 3rd Int. Surfing Reef Symp., Raglan, New Zealand, 99–114.
Bowen, A. J. (1969). “Rip currents. 1: Theoretical investigations.” J. Geophys. Res.JGREA2, 74(23), 5467–5478.
Cáceres, I., Trung, Le H., van Ettinger, H. D., Reniers, A., and Uijttewaal, W. (2010). “Wave and flow response to an artificial surf reef: Laboratory measurements.” J. Hydraul. Eng.JHEND8, 136(5), 299–310.
Costa, M. (2009). “Tratamento de dados de agitação marítima: Leirosa.” Instituto Hidrográfico, Oceanography Division, Lisbon, Portugal (in Portuguese).
Dally, W. R. (2001). “The maximum speed of surfers.” J. Coastal Res.JCRSEK, SI(29), 33–40.
Duarte, D. N., and Reis, R. P. (1992). “Estudo preliminar da evolução da linha de costa adjacente à embocadura do estuário do Mondego entre 1801 e 1989: Estimações das taxas de acreção e erosão costeiras.” Actas do III Congr. Geol. España y VIII Congr. Latimoamericano de Geologia, 2, Universidad de Salamanca, Salamanca, Spain, 146–150 (in Portuguese).
European Commission. (2004). “Living with coastal erosion in Europe: Sediment and space for sustainability.” Eurosion study Eurostat, Luxembourg.
Galvin, C. J. Jr. (1968). “Breaker-type classification on three laboratory beaches.” J. Geophys. Res.JGREA2, 73(12), 3651–3659.
Gomes, F. V., and Pinto, F. T. (2006). Eurosion case study Vagueira-Mira (Portugal), Instituto de Hidráulica e Recursos Hídricos, Porto, Portugal.
Hearin, J. M. (2006). “Preliminary design of an artificial surfing reef for Cocoa beach, Florida.” M.Sc. thesis, Florida Institute of Technology, Melbourne, FL.
Henriquez, M. (2004). “Artificial surf reefs.” M.Sc. thesis, Delft Univ. of Technology, Delft, The Netherlands.
Henriquez, M., Janssen, T. T., Van Ettinger, H. D., and Reniers, A. J. H. M. (2006). “Refraction-controlled surfability.” Proc., 5th Int. Artificial Surfing Reef Symp., Lombok Indonesia.
Hiliau, W., and Phillips, D. (2003). “Artificial surfing reef construction.” Proc., 3rd Int. Surfing Reef Symp., Raglan, New Zealand, 378–397.
Hutt, J. A., Black, K. P., and Mead, S. T. (2001). “Classification of surf breaks in relation to surfing skill.” J. Coastal Res.JCRSEK, SI(29), 66–81.
Jackson, L. A., Reichelt, R. E., Restall, S., Corbett, B., Tomlinson, R., and McGrath, J. (2004). “Marine ecosystem enhancement on a geotextile coastal protection reef—Narrowneck reef case study.” Proc., 29th Int. Conf. on Coastal Engineering, National Civil Engineering Laboratory, Lisbon, Portugal, 3940–3952.
Johnson, D. (2000). “DIWASP, a directional wave spectra toolbox for MATLAB®: User manual.” Research Rep. WP-1601-DJ (V1.1), Centre for Water Research, Univ. of Western Australia, Crawley, Australia.
Kennedy, A. B., Chen, Q., Kirby, J. T., and Dalrymple, R. A. (2000). “Boussinesq modeling of wave transformation, breaking, and runup. Part I: 1D.” J. Waterway, Port, Coastal, Ocean Eng., 126(1), 39–47.
Longuet-Higgins, M. S., Cartwright, D. E., and Smith, N. D. (1963). “Observation of the directional spectrum of SRA waves using the motions of a floating buoy.” Ocean wave spectra, Prentice-Hall, Upper Saddle River, NJ.
Lynett, P., and Liu, P. L.-F. (2004). “Modeling wave generation, evolution, and interaction with depth integrated, dispersive wave equations.” Coulwave Code Manual, Cornell Univ. Long and Intermediate Wave Modeling Package, Cornell University, Ithaca, NY, 179 〈http://ceeserver.cee.cornell.edu/pll-group/doc/COULWAVE_manual.pdf〉.
MacMahan, J. H., Thornton, E. B., and Reniers, A. J. H. M. (2006). “Rip current review.” Coastal Eng.COENDE, 53(2), 191–208.
Moores, A. (2001). “Using video images to quantify wave sections and surfers parameters.” M.Sc. thesis, Univ. of Waikato, Hamilton, New Zealand.
Neves, M. G., Mendonça, A., Borrego, M., and Antunes do Carmo, J. S. (2010). “Bidimensional wave breaking tests over a submerged reef built with geotextile sand containers.” Proc., 3rd Int. Conf. on the Application of Physical Modelling to Port and Coastal Protection (COASTLAB’10), Barcelona, Spain, in press.
Nwogu, O. (1993). “Alternative form of Boussinesq equations for nearshore wave propagation.” J. Waterway, Port, Coastal, Ocean Eng., 119(6), 618–638.
Phillips, D. J., Mead, S. T., Black, K. P., and Healy, T. R. (2003). “Surf zone currents and influence on surfability.” Proc., 3rd Int. Artificial Surfing Reef Symp. (CD-ROM), Univ. of Waikato, Hamilton, New Zealand.
Pilarczyk, K. W. (2003). “Design of low-crested (submerged) structures: An overview.” Proc., 6th Int. Conf. on Coastal and Port Engineering in Developing Countries (COPEDEC VI), Galappatti, R., ed., Lanka Hydraulic Institute, Moratuwa, 1–18.
Press, W. H., Flannery, B. P., and Teukolsky, S. A. (1989). Numerical recipes, Cambridge University Press, Cambridge, U.K.
Ranasinghe, R., Turner, I. L., and Symonds, G. (2006). “Shoreline response to multi-functional artificial surfing reefs: A numerical and physical modelling study.” Coastal Eng.COENDE, 53(7), 589–611.
Scarfe, B. E. (2002). “Categorising surfing manoeuvres using wave and reef characteristics.” Master’s thesis, Univ. of Waikato, Hamilton, New Zealand.
Scarfe, B. E., de Lange, W. P., Chong, A. K., Black, K. P., and Mead, S. T. (2002). “The influence of surfing wave parameters on maneuver type from field investigations at Raglan, New Zealand.” Proc. for the 2nd Surfing Arts, Science and Issues Conf. (SASIC 2), The Groundswell Society, 74–89.
Scarfe, B. E., Elwany, M. H. S., Mead, S., and Black, K. P. (2003). “The science of surfing waves and surfing breaks: A review.” Proc., 3rd Int. Surfing Reef Symp., Scripps Institution of Oceanography, Univ. of California San Diego, San Diego.
Shepard, F. P., and Inman, D. L. (1950). “Nearshore water circulation related to bottom topography and wave refraction.” Trans., Am. Geophys. UnionTAGUAT, 31(2), 196–212.
Van Ettinger, E. (2005). “Artificial surf reef design.” M.Sc. thesis, Faculty of Civil Engineering and Geosciences, Delft Univ. of Technology, Delft, The Netherlands.
Voorde, M. T. (2009). “Contributions to the design of multi-functional artificial reefs.” Ph.D. thesis, Dept. of Civil Engineering, Faculty of Sciences and Technology of the Univ. of Coimbra, Coimbra, Portugal.
Voorde, M. T., Antunes do Carmo, J. S., and Neves, M. G. (2009). “Multi-functional artificial reefs for coastal protection.” Chapter 7, Agricultural runoff, coastal engineering and flooding, Hudspeth, Ch. A., and Reeve, T. E., eds., Nova Science Publishers, Hauppauge, NY, 153–210.
Voorde, M. T., Neves, M. G., and Antunes do Carmo, J. S. (2008). “Preliminary study on the geometry of an artificial reef for coastal protection and surfing along the West coast of Portugal.” J. Integ. Coastal Zone Manage., 8(1), 65–79 (in Portuguese).
Walker, J. R. (1974). “Recreational surf parameters.” Technical Rep. 30, James K. K. Look Laboratory of Oceanographic Engineering, University of Hawaii, Manoa, HI.
Wei, G., and Kirby, J. T. (1995). “A time-dependent numerical code for extended Boussinesq equations.” J. Waterway, Port, Coastal, Ocean Eng., 121, 251–261.
Wei, G., Kirby, J. T., Grilli, S. T., and Subramanya, R. (1995). “A fully nonlinear Boussinesq model for surface waves. I: Highly nonlinear, unsteady waves.” J. Fluid Mech.JFLSA7, 294, 71–92.
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 138 • Issue 3 • May 2012
Pages: 226 - 235
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Jun 10, 2010
Accepted: Sep 20, 2011
Published online: Sep 22, 2011
Published in print: May 1, 2012
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