UNCLASSIFIED 



SECURITY CLASSIFICATION OF THIS PAGE (When Dale Entered) 



REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 

 TR 80-1 



2. GOVT ACCESSION NO, 



3. RECIPIENT'S CATALOG NUMBER 



4. rni.e (and Subtitle) 



TWO-DIMENSIONAL TESTS OF WAVE TRANSMISSION 

 AND REFLECTION CHARACTERISTICS OF 

 LABORATORY BREAKWATERS 



5. TYPE OF REPORT 4 PERIOD COVERED 



Technical Report 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfs; 



8. CONTRACT OR GRANT NUMBERCe; 



William N. Seelig 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-CS) 



Kingman Building, Fort Belvoir, Virginia 22060 



F31538 



11. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building, Fort Belvoir, Virginia 22060 



12. REPORT DATE 



June 1980 



13. NUMBER OF PAGES 



187 



14. MONITORING AGENCY NAME ft ADDRESS^'/ d'/'erenf Irom Controtllne Office) 



15. SECURITY CLASS, (of thia report) 



UNCLASSIFIED 



16. DISTRIBUTION STATEMENT fo/ thU Report) 



Approved for public release; distribution unlimited. 



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



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue on reverse sida If neceaaary and identify by block number^ 



Breakwaters 

 Wave reflection 

 Waves 



Wave transmission 



Wave transmission coefficients 



20^ ABSTRACT (Xlantirme aa rm-reraa ai^a ft na^ce-aaary and Identify by block number) 



Monochromatic and irregular wave transmission and reflection measurements 

 were made for various subaerial and submerged breakwater cross sections. 

 These two-dimensional laboratory tests included smooth impermeable breakwaters, 

 rubble-mound breakwaters, and breakwaters armored with dolos units. Wave 

 transmission by overtopping was found to be related to breakwater freeboard 

 wave runup, and breakwater crest width; a method of estimating transmission by 

 overtopping coefficients is presented. The Madsen and White (1976) numerical 



(continued) 



on ""^ 



EDITION OF t MOV 65 IS OBSOLETE 



UNCLASSIFIED 



SECURITY CLASSIFICATION OF THIS PAGE (When Data Entered) 



