SECURITY CLASSIFICATION OF THIS PAGE (When Data Entered) 
READ INSTRUCTIONS 
REPORT DOCUMENTATION PAGE 
1. REPORT NUMBER 2. GOVT ACCESSION NO.} 3. RECIPIENT'S CATALOG NUMBER 
MR 77-7 (VI) 
4. TITLE (and Subtitle) 5. TYPE OF REPORT & PERIOD COVERED 
‘LABORATORY EFFECTS IN BEACH STUDIES 
Volume VI. Movable-Bed Experiments With 
H,/Lo = 0.004 
Miscellaneous Report 
6. PERFORMING ORG. REPORT NUMBER 
8. CONTRACT OR GRANT NUMBER(s) 
7. AUTHOR(s) 
Charles B. Chesnutt 
Robert P. Stafford 
10. PROGRAM ELEMENT, PROJECT, TASK 
AREA & WORK UNIT NUMBERS 
9. PERFORMING ORGANIZATION NAME AND ADDRESS 
Department of the Army 
Coastal Engineering Research Center (CERRE-CP) 
Kingman Building, Fort Belvoir, Virginia 22060 
11. CONTROLLING OFFICE NAME AND ADDRESS 
Department of the Army 
Coastal Engineering Research Center 
Kingman Building, Fort Belvoir, Virginia 22060 
14. MONITORING AGENCY NAME & ADDRESS(if different from Controlling Office) 
D31192 
12. REPORT DATE 
March 1978 
13. NUMBER OF PAGES 
BT Elo 
15. SECURITY’ CLASS. (of thie report) 
UNCLASSIFIED 
1Sa. DECL ASSIFICATION/ DOWNGRADING 
SCHEDULE 
16. DISTRIBUTION STATEMENT (of thie Report) 
Approved for public release; distribution unlimited. 
17. DISTRIBUTION STATEMENT (of the abstract entered in Block 20, if different from Report) 
- SUPPLEMENTARY NOTES 
- KEY WORDS (Continue on reverse side if necessary and identify by block number) 
Breakers Movable-bed experiments Wave height variability 
Coastal engineering Wave envelopes Wave reflection 
Currents Wave generators Wave tanks 
Model studies 
ABSTRACT (Continue on reverse side ff neceseary and identify by block number) 
Two experiments with long low waves on 0.2-millimeter sand slopes in tanks 
6 and 10 feet wide showed very different profile development, apparently be- 
cause current circulation, present only in the 6-foot tank, was more effective 
in distributing sand in the onshore-offshore direction. In the 6-foot tank, 
the profile developed a more distinct shelf separated by two relatively steep 
seaward-facing slopes. The clockwise circulation pattern occurred over the 
shelf between the foreshore and the first seaward antinode of the standing 
(Continued ) 
FORM 
DD , 1473 ~~ EprTiom OF 1 Nov 65 1S OBSOLETE 
sae 23 UNCLASSIFIED 
SECURITY CLASSIFICATION OF THIS PAGE (When Data Entered 
