Abstract
Low rock structures have been constructed on some beaches to reduce storm-induced damage to backshore areas, but no method is available to design such structures. Four test series were conducted in a wave flume with a sand beach and a berm to compare the effectiveness of a narrow dune and a rock (stone) seawall placed on the foreshore in reducing wave overtopping and sand overwash. The incident irregular waves were kept approximately the same. The water level was raised to increase wave overtopping. The dune was effective in eliminating or reducing wave overtopping compared with the corresponding berm with no dune, but the narrow dune was destroyed easily as the water level was increased. The stone seawall reduced wave overtopping even after its deformation. A stone seawall buried inside a dune functioned like the dune initially and like the seawall after the sand on and inside the porous seawall was eroded by overtopping waves. An existing numerical model was extended to predict sand transport on and inside the porous structure in the swash zone.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This study was partially supported by the U.S. Army Corps of Engineers under Cooperative Agreement W912HZ-15-2-0028 and by the Delaware Sea Grant under Grant NOAA SG2016-18 R/RCE-9.
References
Ellis, J. T., and Cappietti, L. (2013). “Storm-driven hydrodynamic and sedimentological impacts to an engineered coast.” J. Coastal Res., 65(2), 1461–1466.
Figlus, J., Kobayashi, N., Gralher, C., and Iranzo, V. (2011). “Wave overtopping and overwash of dunes.” J. Waterway, Port, Coastal, Ocean Eng., 26–33.
Garcia, R., and Kobayashi, N. (2015). “Trunk and head damage on a low-crested breakwater.” J. Waterway, Port, Coastal, Ocean Eng., 04014037.
Irish, J. L., Lynett, P. J., Weiss, R., Smallegan, S. M., and Cheng, W. (2013). “Buried relic seawall mitigates Hurricane Sandy’s impacts.” Coastal Eng., 80, 79–82.
Japan Society of Civil Engineers. (1994). Japanese coasts and ports, Tokyo.
Kim, H. D., Kobayashi, N., and Cárdenas, X. C. (2016). “Comparison of rock seawall and dune for storm damage reduction.” Proc., 35th Int. Conf. on Coastal Engineering, ASCE, Reston, VA, 1–13.
Kobayashi, N. (2016). “Coastal sediment transport modeling for engineering applications.” J. Waterway, Port, Coastal, Ocean Eng., 03116001.
Kobayashi, N., Farhadzadeh, A., and Melby, J. A. (2010). “Wave overtopping and damage progression of stone armor layer.” J. Waterway, Port, Coastal, Ocean Eng., 257–265.
Melby, J. A., and Kobayashi, N. (2011). “Stone armor damage initiation and progression based on the maximum wave momentum flux.” J. Coastal Res., 27(1), 110–119.
Pullen, T., Allsop, N. W. H., Bruce, T., Kortenhouse, A., Schüttrumpt, H., and van der Meer, J. A. (2007). “EurOtop manual. Wave overtopping of sea defenses and related structures: Assessment manual.” 〈http://www.overtopping-manual.com〉 (Nov. 2016).
Walling, K., Herrington, T. O., and Miller, J. K. (2016). “Hurricane Sandy damage comparison: Oceanfront houses protected by a beach and dune system with vs. without a rock seawall.” Shore Beach, 84(3), 35–41.
Walling, K., Miller, J. K., Herrington, T. O., and Eble, A. (2014). “Comparison of Hurricane Sandy impacts in three New Jersey coastal communities.” Proc., 34th Int. Conf. on Coastal Engineering, ASCE, Reston, VA, 1–14.
Wolters, G., and van Gent, M. R. A. (2012). “Granular open filters on a horizontal bed under wave and current loading.” Proc., 33rd Int. Conf. on Coastal Engineering, ASCE, Reston, VA, 1–10.
Wolters, G., van Gent, M. R. A., Olthof, J., and Smith, G. (2014). “Sloped granular open filters under wave loading.” Proc., 34th Int. Conf. on Coastal Engineering, ASCE, Reston, VA, 1–14.
Information & Authors
Information
Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 143 • Issue 6 • November 2017
Copyright
© 2017 American Society of Civil Engineers.
History
Received: Dec 20, 2016
Accepted: Apr 14, 2017
Published online: Aug 2, 2017
Published in print: Nov 1, 2017
Discussion open until: Jan 2, 2018
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.