PREFACE 



This report reviews wave-current interaction, a phenomenon which may affect 

 wave height and wave direction in unexpected ways. Wave-current interaction 

 has received relatively more attention from Europeans than from Americans 

 because of the greater importance of tides to countries bordering the North Sea. 

 A comprehensive review of the literature, much of it foreign, will increase 

 awareness among U.S. engineers of the important aspects of wave-current inter- 

 action. An annotated bibliography on this subject is provided by Peregrine, 

 Jonsson, and Galvin (1983). The work was carried out under the U.S. Army 

 Coastal Engineering Research Center's (CERC) Waves at Entrances work unit. 

 Harbor Entrances and Coastal Channels Program, Coastal Engineering Area of 

 Civil Works Research and Development. 



The report was prepared by D. Howell Peregrine of the University of Bristol, 

 England, with assistance from Ivar G. Jonsson of the Institute of Hydrodynamics 

 and Hydraulic Engineering (ISVA) , Technical University of Denmark, under CERC 

 Contract No. DACW72-80-C-0004 with Cyril Galvin, Coastal Engineer. 



The authors acknowledge the assistance of many colleagues all over the 

 world and the particular efforts of Dr. B. Herchenroder and B.R. Hall, CERC; 

 M. Matthes, P.E. Balduman, S.J. Weinheimer, and S. Zukor of C. Galvin, 

 Coastal Engineer. 



Dr. B. Herchenroder was the contract monitor for the report, under the 

 general supervision of Dr. C.L. Vincent, Chief, Coastal Oceanography Branch, 

 and Mr. R.P. Savage, Chief, Research Division, CERC. 



Technical Director of CERC was Dr. Robert W. Whalin, P.E. 



Comments on this report are invited. 



Approved for publication in accordance with Public Law 166, 79th Congress, 

 approved 31 July 1945, as supplemented by Public Law 172, 88th Congress, 

 approved 7 November 1963. 



^Jfl- 



TED E. BISHOP 



Colonel, Corps of Engineers 



Commander and Director 



