Energy transfer and dissipation during surf beat conditions

Baldock, T. E. and Hare, T. J. (2004). Energy transfer and dissipation during surf beat conditions. In: Jane McKee Smith, Coastal Engineering 2004: Proceedings of the 29th International Conference. 29th International Conference on Coastal Engineering, Lisbon, Portugal, (1212-1224). 19-24 September 2004. doi:10.1142/9789812701916_0096


Author Baldock, T. E.
Hare, T. J.
Title of paper Energy transfer and dissipation during surf beat conditions
Conference name 29th International Conference on Coastal Engineering
Conference location Lisbon, Portugal
Conference dates 19-24 September 2004
Convener National Civil Engineering Laboratory
Proceedings title Coastal Engineering 2004: Proceedings of the 29th International Conference
Journal name Coastal Engineering 2004, Vols 1-4
Place of Publication New Jersey, United States
Publisher World Scientific Publishing
Publication Year 2004
Sub-type Fully published paper
DOI 10.1142/9789812701916_0096
ISBN 9812562982
9789812562982
Editor Jane McKee Smith
Volume 1
Start page 1212
End page 1224
Total pages 13
Language eng
Abstract/Summary New experimental data on energy transfer and energy dissipation during surf beat conditions are presented. Long wave-short wave interaction inside the surf zone leads to broadening of a monochromatic sea state and a net reduction in short wave height. The amplitude decay of bound sub- and superharmonics in the nearshore region is also investigated, and found to commence with the onset of short wave breaking. The sub- and superharmonic decay can be modelled using the local 2nd order solution for the bound harmonics. It is suggested that this mechanism occurs for steep wave conditions on mild slopes and where the short waves are not in shallow water at the breakpoint. A wave steepness criterion is given to describe the latter.
Subjects 0905 Civil Engineering
Keyword Gravity waves
Breakpoint
Breaking
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

 
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