Random Wave Measurements in Front of Reflective Structures
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 125, Issue 1
Abstract
The changes in the wave spectrum and significant wave height near a reflective structure are investigated. Significant wave-height measurements with a one wave gauge show a standing wave pattern near the structure, extending offshore to about two times the spectral-peak wavelength for a JONSWAP incidental wave spectrum. The measured spectra also reveal a pattern of nodal and antinodal frequencies, even to much larger distances from the structure. These findings are in agreement with results from linear wave theory. Multigauge techniques can be used to discriminate between incident and reflected waves. Despite the standing wave pattern these techniques can be used to determine the incident wave height accurately up close to the structure—the distance being limited by the extend of the evanescent wave modes attached to the structure.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Dean R. G., and Dalrymple, R. A. ( 1991). Water wave mechanics for engineers and scientists. World Scientific, Singapore.
2.
Dingemans, M. W. ( 1997). Water wave propagation over uneven bottoms. World Scientific, Singapore.
3.
Goda, Y. ( 1985). Random seas and design of maritime structures. University of Tokyo Press, Tokyo.
4.
Goda, Y., and Suzuki, Y. ( 1976). “Estimation of incident and reflected waves in random wave experiments.” Proc., 15th Int. Conf. Coast. Engrg., Vol. 1, ASCE, New York, 828–845.
5.
Gradshteyn, I. S., and Ryzhik, I. M. ( 1980). Table of integrals, series, and products. Academic, San Diego.
6.
Hughes, S. A. (1992). “Estimating wave-induced bottom velocities at vertical wall.”J. Wtrwy., Port, Coast., and Ocean Engrg., ASCE, 118(2), 175–192.
7.
Hughes, S. A. ( 1993). “Laboratory wave reflection analysis using co-located gages.” Coast. Engrg., 20, 223–247.
8.
Le Méhauté, B., and Wang, J. D. (1982). “Wave spectrum changes on sloped beach.”J. Wtrwy., Port, Coast., and Ocean Engrg., ASCE, 108(1), 33–47.
9.
Mansard, E. P. D., and Funke, E. R. ( 1980). “The measurement of incident and reflected spectra using a least squares method.” Proc., 17th Int. Conf. Coast. Engrg., Vol. 1, ASCE, New York, 154–172.
10.
Zelt, J. A., and Skjelbreia, J. E. ( 1992). “Estimating incident and reflected wave fields using an arbitrary number of wave gauges.” Proc., 23rd Int. Conf. Coast. Engrg., Vol. 1, ASCE, New York, 777–789.
Information & Authors
Information
Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 125 • Issue 1 • January 1999
Pages: 39 - 45
History
Received: Jun 5, 1995
Published online: Jan 1, 1999
Published in print: Jan 1999
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.