Author: Jane M. Smith
Publisher:
ISBN:
Category : Inlets
Languages : en
Pages : 62
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Book Description
Laboratory measurements of wave shoaling and breaking on an ebb current were made in an idealized inlet in a wave basin. The experiment arrangement, procedures, and data analysis are described. The wave and ebb current measurements showed increased shoaling and breaking (compared to no current, shifting of the spectral peak to lower frequencies, and energy dissipation concentrated at the spectral peak and higher frequencies). The measurements were used to evaluate and develop formulations of wave dissipation on a current for application to a spectral wave model. Whitecapping dissipation formulations underpredicted breaking on a current in shallow water, whereas the bore-based wave dissipation relationship of Banjes and Janssen and a relationship developed in this study provided good estimates of wave-height decay on an ebb current Tables of the wave and current parameters are provided as an appendix.
Author: Jane McKee Smith
Publisher:
ISBN:
Category : Banks (Oceanography)
Languages : en
Pages : 152
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Book Description
In this report, wave breaking on a current is examined through physical-model measurements in an idealized inlet with a steady ebb current. Wave and current measurements will be used to evaluate wave dissipation models. The goal of the study is to provide the data to develop a dissipation function for wave breaking on a current that is based on integrated wave parameters, is applicable for arbitrary water depths, and is robust. The motivation for these laboratory experiments was to measure wave breaking in typical coastal inlet conditions. The measurements are being used to parameterize wave breaking for application in numerical wave transformation models, e.g., in the steady-state spectral wave model STWAVE. The data collected and analyzed for this study are an extension of the data set collected by Smith et al. (1998) in the same physical model facility. Smith et al. (1998) evaluated and developed dissipation algorithms using these data. It was found that whitecapping formulations, strongly dependent on wave steepness, generally under-predict dissipation. A relationship for dissipation as a function of wave height squared was developed which gave improved agreement between calculated and predicted dissipation compared to other work. The relationship also worked as well as others in modeling the wave height. The data presented in this report include a larger range of incident waves and ebb currents than the previous data set (Smith et al. 1998). These experiments also include an elliptical ebb shoal seaward of the inlet. The shoal induces depth-limited breaking (in addition to the current-induced breaking in the inlet), which is a typical feature of many coastal inlets. Also, an examination of effects of laboratory scaling was performed.
Author: Magnus Larson
Publisher:
ISBN:
Category : Ocean waves
Languages : en
Pages : 92
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Author:
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ISBN:
Category : Coast changes
Languages : en
Pages : 136
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Author: Billy L. Edge
Publisher:
ISBN:
Category : Lakes
Languages : en
Pages : 902
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Author: Steven P. Christman
Publisher:
ISBN:
Category : Galveston Bay (Tex.)
Languages : en
Pages : 660
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Author:
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 176
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1406
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Author: American Society of Civil Engineers
Publisher:
ISBN:
Category : Civil engineering
Languages : en
Pages : 1036
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Book Description
Indexes materials appearing in the Society's Journals, Transactions, Manuals and reports, Special publications, and Civil engineering.
Author:
Publisher:
ISBN:
Category : Marine biology
Languages : en
Pages : 798
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