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REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



MR 83-1 



2. GOVT ACCESSION NO 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE fand Subtitle; 



THE ELEVATION AND DURATION OF WAVE CRESTS 



5. TYPE OF REPORT S PERIOD COVERED 



Miscellaneous Report 



6. PERFORMING ORG. REPORT NUMBER 



AUTHORr»J 



William N. Seelig 

 John P. Ahrens 

 William G. Grosskopf 



B. CONTRACT OR GRANT NUMBERfo; 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-CS) 



Kingman Building, Fort Belvoir, VA 22060 



A31592 



11. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building. Fort Belvoir. VA 22060 



12. REPORT DATE 



January 1983 



13. NUMBER OF PAGES 

 73 



14. MONITORING AGENCY NAME S ADDRESSfJ/ d(«orBn( from ControlUng Olllce) 



15. SECURITY CLASS, (ol thia report) 



UNCLASSIFIED 



16. DISTRIBUTION ST UTEUEHT (of thi a Report) 



Approved for public release; distribution unlimited. 



17. DISTRIBUTION STATEMENT (of the abatract entered In Block 20, II ditterent from Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue 



aary and identity by block number) 



Irregular waves 

 Monochromatic waves 



Wave breaking 

 Wave crests 



ABSTRACT fCozrt&ni* an r^nrmm atA ff rtmcvaamiy aod tdetUify by block number) 



The Stream-function wave theory of Dean (1974) is used together with 

 monochromatic and irregular laboratory wave data to develop methods for 

 estimating the elevation and duration of wave crests. The resulting predic- 

 tion techniques are applied to a wide range of wave conditions measured at 

 CERC's Field Research Facility in Duck, North Carolina, and are shown to give 

 reliable and often conservative estimates of crest elevation. The techniques 

 presented in this report can be used for both nonbreaking and breaking wave 

 conditions. 



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