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Long-period oscillations in a harbour induced by incident short waves

Published online by Cambridge University Press:  26 April 2006

Chiang C. Mei  and
Yehuda Agnon
Chiang C. Mei
Affiliation:
Department of Civil Engineering, Massachusetts Institute of Technology, Cambridge, MA 01239, USA
Yehuda Agnon
Affiliation:
Department of Civil Engineering, Technion, Haifa, Israel
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Abstract

Progressive short waves with a narrow frequency band are known to be accompanied by long set-down waves travelling with the groups. In finite depth, scattering of short waves by a large structure or a varying coastline can radiate free long waves which propagate faster than the incident set-down. In a partially enclosed harbour attacked by short waves through the entrance, such free long waves can further resonate the natural modes of the harbour basin. In this paper an asymptotic theory is presented for a harbour whose horizontal dimensions are much greater than the entrance width, which is in turn much wider than the short wavelength.

Information

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 208 , November 1989 , pp. 595 - 608
Copyright
© 1989 Cambridge University Press

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References

Agnon, Y., Choi, H. S. & Mei, C. C. 1988 Slow drift of a floating cylinder in narrow banded beam seas. J. Fluid Mech. 190, 141–163.Google Scholar
Agnon, Y. & Mei, C. C. 1985 Slow drift motions of a rectangular block in beam seas. J. Fluid Mech. 151, 279–294.Google Scholar
Agnon, Y. & Mei, C. C. 1988a Trapping and resonance of long shelf waves due to groups of short waves. J. Fluid Mech. 195, 201–221.Google Scholar
Agnon, Y. & Mei, C. C. 1988b Excitation of long internal waves by groups of short surface waves incident on a barrier. J. Fluid Mech. 192, 17–31.Google Scholar
Bowers, E. C. 1977 Harbour resonance due to set-down beneath wave groups. J. Fluid Mech. 79, 71–92.Google Scholar
Ito, Y. 1970 Head loss at tsunami-breakwater opening. Proc. 12th Conf. Coastal Engng. pp. 2123–2131.Google Scholar
Lepelletier, T. G. 1980 Tsunami harbor oscillations induced by nonlinear transient long waves. Keck Laboratory, Calif. Instl. Tech. Rep. KH-R-41.Google Scholar
Longuet-Higgins, M. S. & Stewart, R. W. 1962 Radiation stresses and mass transport in gravity waves with applications to surf-beats. J. Fluid Mech. 13, 481–504.Google Scholar
Mei, C. C. 1983 The Applied Dynamics of Ocean Surface Waves. Wiley Interscience. 750 pp.
Miles, J. W. & Munk, W. H. 1961 Harbor paradox. J. Waterways. Harbors Div. Proc. ASCE 87, 111–130.Google Scholar
Munk, W. H. 1949 Surf Beats. Trans. Am. Geophys. Union 30, 849–854.Google Scholar
Rogers, S. R. & Mei, C. C. 1978 Nonlinear resonant excitation of a long and narrow bay. J. Fluid Mech. 88, 161–180.Google Scholar
SantasLopez, J. C. & Pina, G. Gomez 1988 Long wave analysis in a Spanish Harbor. 23rd Intl Conf. Coastal Engng, paper 35.Google Scholar
Ünlüata, Ü. & Mei, C. C. 1975 Effects of entrance losses on harbor oscillations. J. Waterways, Harbors & Coastal Engng Div. ASCE 101, 161–180.Google Scholar
Zhou, C. & Liu, P. L.-F. 1987 Second-order low-frequency wave forces on a vertical cylinder. J. Fluid Mech. 175, 143–155.Google Scholar