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REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



CETA 82-2 



2. GOVT ACCESSION NO. 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE (and Subtitle) 



ENERGY LOSSES OF WAVES IN SHALLOW WATER 



S. TYPE OF REPORT & PERIOD COVERED 



Coastal Engineering 

 Technical Aid 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfsJ 



William G. Grosskopf 

 C. Linwood Vincent 



8. CONTRACT OR GRANT NUMBERfe) 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-CO) 



Kingman Building, Fort Belvoir, Virginia 22060 



A31592 



n. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building, Fort Belvoir, Virginia 22060 



12. REPORT DATE 



February 1982 



13. NUMBER OF PAGES 

 17 



U. MONITORING AGENCY NAME & ADDRESS(II dllferent from Controlling Office) 



15. SECURITY CLASS, fof thia report) 



UNCLASSIFIED 



16. DISTRIBUTION STATEMENT fof thIa Report) 



Approved for public release; distribution unlimited. 



17. DISTRIBUTION STATEMENT (ol the abstract entered In Block 20, II different from Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS f Continue ( 



aide If neceesary and Identify by block number) 



Energy spectra 

 Shallow-water waves 



Wave height 



20. ABSTRACT (Caatimie an rmv^rmm afyCa ff rmre-aaary and Identity by block number) 



This report presents a m.ethod for predicting nearshore significant wave 

 height given the straight-line fetch length, the windspeed, and the nearshore 

 water depth. The prediction curves were generated by numerically propagating 

 offshore JONSWAP spectra shoreward while applying shoaling and wave steepness 

 limitation criteria to each spectral component. Example problems are included. 



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