RESPONSE OF POSIDONIA OCEANICA TO WAVE MOTION IN SHALLOW-WATERS - PRELIMINARY EXPERIMENTAL RESULTS
Proceedings of the 32nd International Conference
PDF

Keywords

Posidonia Oceanica
canopy
wave
drag force
wave dumping

How to Cite

Cavallaro, L., Lo Re, C., Paratore, G., Viviano, A., & Foti, E. (2011). RESPONSE OF POSIDONIA OCEANICA TO WAVE MOTION IN SHALLOW-WATERS - PRELIMINARY EXPERIMENTAL RESULTS. Coastal Engineering Proceedings, 1(32), waves.49. https://doi.org/10.9753/icce.v32.waves.49

Abstract

Aim of the present work is to contribute to the knowledge about the interaction between the flow induced by wave and the aquatic vegetation. More in details the results of preliminary tests of an experimental laboratory investigation about the response of a Posidonia Oceanica meadow to wave motion in shallow waters is reported. A wide attention was posed to the behavior of a synthetic plants with plastic material. To this aim an image acquisition technique was used to analyze and compare the movement of both the artificial plant and the real one. The experiments carried out about the interaction between the artificial meadow and the waves showed a significant wave dumping, in particular in the case of plants having the same length of the water depth.
https://doi.org/10.9753/icce.v32.waves.49
PDF

References

Asano, T., Tsutsui, S., and Sakai, T. 1988. Wave camping characteristics due to seaweed. Proceedings of 35 th Coastal Engineering Conference in Japan, (JSCE), 138-142.

Augustin, L. N., Irish, J. L., and Lynett, P. 2009. Laboratory and numerical studies of wave damping by emergent and near-emergent wetland vegetation. Coastal Engineering, 56, 332-340. http://dx.doi.org/10.1016/j.coastaleng.2008.09.004

Boudouresque, C.F., Meinesz, A. 1982. Découverte de l'herbier de Posidonie. Cah. Parcnation. PortCros. Fr.,A: 1-79.

Bradley, K., and Houser, C. 2009. Relative velocity of seagrass blades: implications for wave attenuation in low-energy environments. J. Geophys. Res., 114.

Ciraolo, G., Ferreri, G. B., and La Loggia, G. 2006. Flow resistance of Posidonia oceanica in shallow water. Journal of Hydraulic Research, 44 (2),189-202. http://dx.doi.org/10.1080/00221686.2006.9521675

Ciraolo, G., and Ferreri, G. B. 2007. Log velocity profile and bottom displacement for a flow over a very flexible submerged canopy. Proc. of 32nd Congress of IAHR - Harmonizing the Demands of Art and Nature in Hydraulics, Venice, 1-6 July 2007.

Ciraolo, G., Ferreri, G. B., and La Loggia, G. 2008. Influence of Posidonia oceanica meadow density on flow resistance in shallow waters. Proc. of 2nd International Symposium on Shallow Flows, Hong Kong, China, 8-12 December.

Dalrymple R. A., Kirby, J.T., and Hwang, P.A. 1984. Wave diffraction due to areas of energy dissipation. J. of Waterway, Port, Coastal and Ocean Eng., 110 (1), 67-79. http://dx.doi.org/10.1061/(ASCE)0733-950X(1984)110:1(67)

Dean, R. G., and Dalrymple, R. A. 1992. Water wave mechanics for engineers and scientists. World Scientific.

Ghisalberti, M., and Nepf, H. 2002. Mixing layer and coherent structures in vegetated aquatic flow. J. http://dx.doi.org/10.1029/2001JC000871

Ghisalberti, M., and Nepf, H. 2005. Mass transfer in vegetated shear flow. Environmental Fluid Mech., http://dx.doi.org/10.1007/s10652-005-0419-1

Ghisalberti, M., and Nepf, H. 2006. The structure of the shear layer over rigid and flexible canopies. http://dx.doi.org/10.1007/s10652-006-0002-4

Kobayashi, N., Raichle, A.W., and Asano, T., 1993.Wave attenuation by vegetation. J. Waterw. Port Coast. Ocean Eng. 119 (1), 30- 48. http://dx.doi.org/10.1061/(ASCE)0733-950X(1993)119:1(30)

Koch, E.W., Sanford, L.P., Chen, S., Shafer, D.J., and McKee, S. J. 2006. Waves in Seagrass Systems: Review and Technical Recommendations. Rep. ERDC TR-06-15. Engineering Research and Development Center US Army Corps of Engineers.

Lowe, R.J., Koseff, J.R., and Monismith, S.G. 2005. Oscillatory flow through submerged canopies: 1. Velocity structure. J. Geophys. Res.-Oceans, 110 (C10). http://dx.doi.org/10.1029/2004JC002788

Mendez, F.J., Losada, I.J., and Losada, M.A., 1999. Hydrodynamics induced by wind waves in a vegetation field. J. Geophys. Res. 104 (C8), 18383- 18396. http://dx.doi.org/10.1029/1999JC900119

Mendez, F.J, and Losada, I. J. 2004. An empirical model to estimate the propagation of random breaking and non breaking waves over vegetation fields. Coastal Engineering, 51, 103-118. http://dx.doi.org/10.1016/j.coastaleng.2003.11.003

Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.