TECHNICAL REPORTS 



Teclmical Report No. 1 — ^A Study of Progressive Oscillatory Waves 

 in Water, 1941. 



Technical ReportNo. 2 — A Summary of the Theory of Oscillatory 

 Waves. 



The authority for publication of this report was granted by an act 

 for the improvement and protection of the beaches along the shores 

 of the United States (Public, 834, 74th Cong.), approved June 26, 

 1936. 



September 18, 1940. 

 This paper was prepared by Prof. Morrough P. O'Brien, member of 

 the Board, with the assistance of Dr. Martin A. Mason and the staff 

 of the Beach Erosion Board, in order to bring into one pubhcation the 

 various basic theories of oscillatory wave motion in water. While 

 it was prepared primarily for departmental use, the Board believes 

 that it will be of material value to engineering and research agencies 

 engaged in work involving wave action. 



A. C. Libber, jr., 

 Major, Corps oj Engineers^ 



Resident Member. 



(IV) 



