UNCLASSIFIED 



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REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



MP 12-75 



2. GOVT ACCESSION NO. 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE (end Subtitle) 



WAVE RUNUP ON A 1 ON 10 SLOPE 



5. TYPE OF REPORT ft. PERIOD COVERED 



Miscellaneous Paper 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORf*; 



John Ahrens 



8. CONTRACT OR GRANT NUMBER(s) 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-SP) 



Kingman Building, Fort Belvoir, Virginia 22060 



10. PROGRAM ELEMENT. PROJECT. TASK 

 AREA & WORK UNIT NUMBERS 



E31229 



1 1. CONTROLLING OFFICE NAME AND ADDRESS^ 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building, Fort Belvoir, Virginia 22060 



12. REPORT DATE 



December 1975 



13. NUMBER OF PAGES 

 25 



14. MONITORING AGENCY NAME 4 ADDRESSf// different from Controlling Olllce) 



15. SECURITY CLASS, (ol thle report) 



UNCLASSIFIED 



15a. DECLASSIFI CATION/ DOWN GRADING 

 SCHEDULE 



16. DISTRIBUTION STATEMENT (of this Report) 



Approved for public release; distribution unlimited. 



17. DISTRIBUTION STATEMENT (ol the abstract entered tn Block 20, It dltlerent from Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue on reverse aide if necessary and Identify by block number) 



Waves Runup slope 

 Wave gages Shore structures 



20. ABSTRACT (Continue on reverse aide if neceaaary and Identify by block number) 



This study was directed towards comparing the runup caused by monochroma- 

 tic and simple irregular waves on a smooth 1 on 10 slope. Wave runup was 

 measured by use of a modified step-resistance wave gage which gave reliable" 

 measurements of extreme values and also provided a complete time history of 

 the runup-air interface on the slope. Irregular waves caused considerably 

 higher extreme values of runup than monochromatic waves even when runup was 

 normalized by dividing by the standard deviation of the incident wave water 



DD,^ 



1473 



EDITION OF 1 NOV 65 IS OBSOLETE 



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