;ENT X 



LIE ] 



Wood? 



Unclassified 



SECURITY CLASSIFICATION OF THIS PAGE 



REPORT DOCUMENTATION PAGE 



Form Approved 

 OMB No. 0704-0188 



la. REPORT SECURITY CLASSIFICATION 

 Unclassified 



lb. RESTRICTIVE MARKINGS 



2a. SECURITY CLASSIFICATION AUTHORITY 



2b. DECLASSIFICATION / DOWNGRADING SCHEDULE 



3. DISTRIBUTION /AVAILABILITY OF REPORT 



Approved for public release; distribution 

 unlimited 



4. PERFORMING ORGANIZATION REPORT NUMBER(S) 

 Technical Report CERC-90-10 



5. MONITORING ORGANIZATION REPORT NUMBER(S) 



6a. NAME OF PERFORMING ORGANIZATION 



USAEWES, Coastal Engineering 

 Research Center 



6b. OFFICE SYMBOL 

 (If applicable) 



7a. NAME OF MONITORING ORGANIZATION 



6c ADDRESS (City, State, and ZIPCode) 

 3909 Halls Ferry Road 

 Vicksburg, MS 39180-6199 



7b. ADDRESS (City, State, and ZIPCode) 



8a. NAME OF FUNDING /SPONSORING 

 ORGANIZATION 



US Army Corps of Engineers 



8b. OFFICE SYMBOL 

 (If applicable) 



9. PROCUREMENT INSTRUMENT IDENTIFICATION NUMBER 



8c ADDRESS (City, State, and ZIPCode) 



Washington, DC 20314-1000 



10. SOURCE OF FUNDING NUMBERS 



34321 



1 1 . TITLE (Include Security Classification) 



SUPERDUCK Surf Zone Sand Transport Experiment 



12. PERSONAL AUTHOR(S) 

 Rosati, Julie Dean; Gingerich, Kathryn J.; Kraus , Nicholas C. 



13a. TYPE OF REPORT 



?inal report 



13b. TIME COVERED 

 FROM 1 



14. DATE OF REPORT (Year, Month, Day) 

 July 1990 



15. PAGE COUNT 



76 



16. SUPPLEMENTARY NOTATION 



Available from National Technical Information Service, 5285 Port Royal Road, Springfield, 



COSATI CODES 



18. SUBJECT TERMS (Continue on reverie if necessary and identify by block number) 

 Field experiment SUPERDUCK experiment, Duck, NC 



Longshore sand transport Surf zone 

 Streamer trap 



1 9. ABSTRACT (Continue on reverie if necessary and identify by block number) 



The procedures and results of an experiment performed to measure the longshore sand 

 transport rate in the surf zone as part of the SUPERDUCK field data collection project are 

 described in this report. Cross-shore distributions of the longshore sand transport rate, 

 as well as its variation at a point in the surf zone through time, were measured with 

 portable sand traps. Comparison of measurements made with two closely spaced traps indicates 

 trap reliability and consistency. The longshore sand transport rate measured at SUPERDUCK 

 was found to be closely related to the product of wave height and longshore current speed, 

 consistent with previously derived theoretical models of transport. The correlation was 

 considerably improved, however, by including corrections due to energy dissipation intro- 

 duced by breaking waves and the variation in the longshore current speed, A complete 

 listing of the sand transport rate, wave height, longshore current, and sand grain 

 size data is given. 



20. DISTRIBUTION /AVAILABILITY OF ABSTRACT 

 Q UNCLASSIFIED/UNLIMITED D SAME AS RPT. 



D DTIC USERS 



21. ABSTRACT SECURITY CLASSIFICATION 



Unclassified 



22a. NAME OF RESPONSIBLE INDIVIDUAL 



22b. TELEPHONE (Include Are* Code) 22c. OFFICE SYMBOL 



OD Form 1473, JUN 86 



Previous editions are obsolete. 



SECURITY CLASSIFICATION OF THIS PAGE 



Unclassified 



MBL/WHOI 



D3D1 00=11271 3 



