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READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



CETA 81-16 



2. GOVT ACCESSION NO 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE (and Subtitle) 



A METHOD FOR ESTIMATING DEPTH-LIMITED 

 WAVE ENERGY 



5. TYPE OF REPORT & PERIOD COVERED 



Coastal Engineering 

 Technical Aid 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfsJ 



C. Linwood Vincent 



8. CONTRACT OR GRANT NUMBERfe) 



PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-CO) 



Kingman Building, Fort Belvoir, Virginia 22060 



A31592 



1. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building, Fort Belvoir, Virginia 22060 



12. REPORT DATE 



November 1981 



13. NUMBER OF PAGES 

 22 



U. MONITORING AGENCY NAME a ADDRESSff/ different from Controlling Office) 



15. SECURITY CLASS, (of this report) 



UNCLASSIFIED 



16. DISTRIBUTION STATEMENT (of this Report) 



Approved for public release; distribution unlimited. 



17. DISTRIBUTION STATEMENT (of the abstract 



ed in Block 20, if different from Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Co 



eesary and identify by block number) 



Monochromatic waves 

 Spectral waves 

 Wind wave energy 



\BSTRACT (Continue 



aide it necessary and identity by block number) 



A method for estimating an upper limit of wind wave energy in shallow 

 water is presented. The method requires knowledge of the depth, the peak 

 frequency of the sea, and the windspeed in order to predict a depth-controlled 

 wave height, H, defined as 4(E) 1 / 2 , with E the energy of the wind sea. 

 In the shallow limit, H is shown to be approximately proportional to the 

 square root of depth. The method is recommended for predictions in storm seas 

 and not for swell (i.e., nearly monochromatic waves). 



DD 



1473 



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