and momentum from the meanders to the main Gulf Stream, 

 exactly opposite to what one would expect if the meanders were 

 frictionally driven (see also Starr, 1961). There arises the 

 problem of the source of energy for the meanders. 



The present work forms an extension of Webster's 

 study of the kinetic energy of the meanders to a consideration of 

 the available potential energy in the Gulf Stream System, Current 

 velocity, temperature and salinity measurements from three 

 cruises along different sections of the stream are used to compute 

 the eddy transports of heat and density across the Gulf Stream. 

 The total number of crossings of the current exceeded 200. 



Data and their reduction 



Figure 1 shows the position of each cruise with 

 respect to the coast line and the mean axis of the Gulf Stream 

 (according to the U.S. Hydrographic Office), Except for the 

 cruise south of Cape Hatteras the different crossings were made 

 along the same line at right angles to the mean current and 

 therefore overlapped each other, 



(1) Cruise 18 of the research vessel "Crawford" 

 by W, S, von Arx, D. F, Bumpus and C, G. Day during May 



