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1. REPORT NUMBER 

 TP 81-2 



2. GOVT ACCESSION NO 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE (and Subtitle) 



LONGSHORE SAND TRANSPORT STUDY AT 

 CHANNEL ISLANDS HARBOR, CALIFORNIA 



5. TYPE OF REPORT a PERIOD COVERED 



Technical Paper 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfa; 



R.O. Bruno, R.G. Dean, 



C.G. Gable, and T.L. VJalton, Jr. 



8. CONTRACT OR GRANT NUMBERC«; 



PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CEREN-EV) 



Kingman Building, Fort Belvoir, Virginia 22060 



F31232 



11. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building, Fort Belvoir, Virginia 22050 



12. REPORT DATE 



March 1981 



13. NUMBER OF PAGES 

 48 



14. MONITORING AGENCY NAME a ADDRESSC// d;//oron( from ControUIni Oltice) 



15. SECURITY CLASS, (ot thia report) 



UNCLASSIFIED 



16. DISTRIBUTION STATEMENT (ol Ihle Report) 



Approved for public release; distribution unlimited. 



17. DISTRIBUTION STATEMENT (ol the absli 



ntered in Block 20, II diflerent Irom Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Can 



sary and Identify by block i 



Channel Islands, California 

 Littoral processes 



Longshore energy flux 

 Longshore sand transport 



20. ABSTRACT (Continue an reveree side It neceeaary and Identity by block number) 



A field experiment was conducted to develop correlations between wave 

 characteristics and longshore sediment transport. The waves were measured 

 by two near-bottom mounted pressure transducers and by visual observation 

 when pressure transducers were not in operation. The average longshore 

 sediment transport rates were determ.ined from sequential volumetric surveys 

 behind an offshore breakwater which was regarded as a total trap. The data 

 analyzed encompass a period of 2 years, 1 year after each dredging cycle. 



(Continued) 



DD ,^5 



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