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REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



I. REPORT NUMBER 



TP 79-1 



2. GOVT ACCESSION NO 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE (and Subtitle) 



RELATION BETWEEN IMMERSED WEIGHT AND VOLUME 

 RATES OF LONGSHORE TRANSPORT 



5. TYPE OF REPORT & PERIOD COVERED 



Technical Paper 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfaJ 



Cyril J. Galvin 



8. CONTRACT OR GRANT NUMBERfsJ 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-CP) 



Kingman Building, Fort Belvoir, Virginia 22060 



D31196 



11. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building, Fort Belvoir, Virginia 22060 



12. REPORT DATE 



May 1979 



13. NUMBER OF PAGES 

 15 



14. MONITORING AGENCY NAME & AOORESS(ll different from Controlling Office) 



15. SECURITY CLASS, (of thlm report) 



UNCLASSIFIED 



16. DISTRIBUTION STATEMENT (ot thle 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 side II necessary and Identity by block i 



Energy flux methods 

 Littoral material 



Longshore transport 

 Sand 



20. ABSTRACT fCarrrrmie mat reverse aftfe If nece— qr and Identity by block number) 



As presently used, the immersed weight rate, 1^, is the volume rate, Q, 

 of longshore transport, multiplied by a constant. For use in engineering prob- 

 lems, I;, must be converted back to the equivalent Q. The 1^ formulation may 

 be important where the unit weight of sand differs significantly from the unit 

 weight of sand at the open-coast sites contributing data to the design curve. 

 Increase in void ratio may result in a 10- to 20-percent increase in actual (as 

 compared to predicted) shoaling volumes where sand accumulates in protected 

 water. Void ratio should be measured in field studies of longshore transport. 



on FC 



1473 



EDITION OF 1 NOV 65 IS OBSOLETE 



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