UNCLASSIFIED 



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REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



MR 77-7 



2. GOVT ACCESSION NO 



3. RECIPIENT'S CATALOG NUMBER 



4. T\JLE (and SubUtle) 



LABORATORY EFFECTS IN BEACH STUDIES 



Volume II. MOVABLE- BED EXPERIMENTS WITH 

 H^/L„ = 0.021 (1970) 



5. TYPE OF REPORT & PERIOD COVERED 



Miscellaneous Report 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORrs; 



Charles B. Chesnutt 

 Robert P. Stafford 



8. CONTRACT OR GRANT NUMBERfa) 



PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-CP) 



Kingman Building, Fort Belvoir, Virginia 



D31192 



II. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building, Fort Belvoir. Virginia 22060 



12. REPORT DATE 



August 1977 



13. NUMBER OF PAGES 



1*. MONITORING AGENCY NAME ft ADDRESSfy/ d(«oren( from Conlroltlng Ollice) 



15. SECURITY CLASS, (ol this report) 



UNCLASSIFIED 



16. DISTRIBUTION STATEMENT (ol this Report) 



Approved for public release; distribution unlimited. 



17. DISTRIBUTION STATEMENT (ol the abstract er\tered In Block 20, It dlllerenl Iron, Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS fCondnuo ofi revers 



-Breakers 



Coastal engineering 

 Currents 

 Model studies 



asary and Identity by block number) 



■/Movable-bed experiments 



Wave envelopes 

 ^Wave generators 



Wave height variability 

 Wave reflection 

 Wave tanks 



20. ABSTRACT (Continue on reverse side II necessary and Idsntlly by block number) 



Two movable-bed experiments were conducted in 6- and 10-foot-wide wave 

 tanks for 175 and 210 hours, respectively, with a wave period of 1.90 seconds 

 and generated wave height of 0.36 foot. The reflection coefficient from the 

 changing profile varied from 0.08 to 0.20 in the 6-foot tank and 0.04 to 0.19 

 in the 10-foot tank and the variations can be qualitatively related to changes 

 in the profile shape. 



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