UNCLASSIFIED 



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REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



CETA 81-8 



2. GOVT ACCESSION NO 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE fand Subt(t/o; 



AN INEXPENSIVE, PORTABLE VIBRACORING SYSTEM 

 FOR SHALLOW-WATER AND LAND APPLICATION 



5. TYPE OF REPORT a PERIOD COVERED 



Coastal Engineering 

 Technical Aid 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfsJ 



Kenneth Finkelstein 

 Dennis Prins 



8. CONTRACT OR GRANT NUMBERfs) 



PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CEREN-GE) 



Kingman Building, Fort Belvoir, Virginia 22060 



D31665 



11. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Arm.y 



Coastal Engineering Research Center 



King.Tian Building, Fort Belvoir, Virginia 22060 



12. REPORT DATE 



July 1981 



13. NUMBER OF PAGES 

 16 



U. MONITORING AGENCY NAME & /^OORESS(l f dilterent from Conlrotllng Ollice) 



15. SECURITY CLASS, (at this report) 



UNCLASSIFIED 



16. DISTRIBUTION ST ATEMENT Co/ Ihio ReporfJ 



Approved for public release; distribution unlimit 



ed, 



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



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue 



ssary and identity by block t 



Cores 

 Sampling 



Sediment 



Vibratory coring device 



20. ABSTRACT (Continue an reverse side It necessary and Identify by block number) 



A portable vibracoring system provides an efficient, rapid, and safe means 

 of extracting cores up to 33 feet (10 meters) long. Short cores (< 10 feet or 

 3 meters long) are also obtained with a part of the system. This report de- 

 scribes the system and the coring procedures for intrusion, extraction, and 

 packaging. 



The coring system is composed of the following modifications of existing 

 designs: (a) a quick f asten-release clamp that attaches the vibrator head to 



(Continued) 



DD,^^ 



1473 



EDITION OF I NOV 65 tS OBSOLETE 



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