PREFACE 



The work in this report was authorized by the Office, Chief of Engineers 

 (OCE) , Coastal Engineering Functional Area of Civil Works Research and 

 Development, under Waves at Entrances Work Unit 31673, Harbor Entrances and 

 Coastal Channels Program, at the Coastal Engineering Research Center (CERC) of 

 the US Army Engineer Waterways Experiment Station (WES). Messrs. John H. 

 Lockhart, Jr., and John G. Housley were OCE Technical Monitors. Dr. Charles L. 

 Vincent is CERC Program Manager. 



This report was prepared by Dr. H. S. Chen, Coastal Oceanography Branch 

 (CR-O) , Research Division (CR) . Work was performed under direct supervision 

 of Dr. Edward F. Thompson, Chief, CR-O, and Mr. H. Lee Butler, Chief, CR; and 

 under general supervision of Dr. James R. Houston and Mr. Charles C. 

 Calhoun, Jr., Chief and Assistant Chief, CERC, respectively. 



This study was initiated after a discussion by Dr. Vincent and the au- 

 thor on the possibility of implementing a scheme to redistribute wave energy 

 behind islands in numerical models. The author acknowledges and appreciates 

 the review and comments provided by Drs. Edward F. Thompson and Norman W. 

 Scheffner. This report was edited by Ms. Shirley A. J. Hanshaw, Information 

 Products Division, Information Technology Laboratory, WES. 



Commander and Director of WES is COL Dwayne G. Lee, CE, and Technical 

 Director is Dr. Robert W. Whalin. 



