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READ INSTRUCTIONS 

 BEFORE COMPLETING FOIiM 



1. REPORT NUMBER 



CETA 81-12 



2. GOVT ACCESSION NO 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE fand SubUt/eJ 



PREDICTION OF WAVE REFRACTION AND SHOALING 

 USING TWO NUMERICAL MODELS 



5. TYPE OF REPORT 4 PERIOD COVERED 



Coastal Engineering 

 Technical Aid 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORrsJ 



Jon M. Hubertz 



8. CONTRACT OR GRANT NUMBERfs) 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-CO) 



Kingman Building, Fort Belvoir, VA 22060-5196 



A31592 



II. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building, Fort Belvoir, VA 22060-5196 



12. REPORT DATE 



August 1981 



13. NUMBER OF PAGES 

 15 



14. MONITORING AGENCY NAME a ADDRESSf// dlllerent from Controlling Ollice) 



15. SECURITY CLASS, (of thia report) 



UNCLASSIFIED 



16. DISTRIBUTION STATEMENT (of this Report) 



Approved for public release, distribution unlimited, 



17. DISTRIBUTION STATEMENT (ol the abst, 



ad In Block 20, If different from Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Co 



sary and identify by block number) 



Numerical model 



Shoaling 



Wave refraction 



20. ABSTRACT (Canlln 



\ide If neceaaary and Identify by block i 



Two numerical models .to predict wave refraction and shoaling in shallow 

 water are described. One model is formulated in terms of wave rays, the 

 other in terms of wave spectra. Output from each model is illustrated and 

 compared to observations made at CERC ' s Field Research Facility at Duck, 

 North Carolina. 



EDITION OF 1 NflV 65 IS OBSOLETE 



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