of 25 feet. The speed calculated from these assumptions is 0.85 knot 

 as compared to the measured speed of 0.65 knot. Similar assumptions 

 and calculations for the waves shown in Figures 9 through 12 provide 

 the following comparisons: 



Figure 



Calculated 



Measured 



Speed 





Speed 



0.45 





1.25 



0.80 





1.15 



0.88 





1.00 



0.87 





0.90 



9 

 10 

 11 

 12 



The cases shown in Figures 7 through 12 were selected to illustrate 

 various wave forms rather than as a statistical basis for speed 

 comparison. Computed speeds may not be truly representative but 

 considering assumptions and data limitations the results are believed 

 to be sufficiently indicative of reasonable agreement between observed 

 and computed speeds. 



The above comparisons are not intended to prove that observed 

 temperature signatures correspond to internal waves that comply 

 closely with solitary wave theory. The partially subjective simplifica- 

 tions required to reduce the actual density structure to a two-layer 

 system preclude such expectations. Simultaneous and continuous 

 measurement of ocean currents and a more detailed network of 

 temperature and salinity sensing devices would also be required. It 

 is believed, however, that sufficient evidence has been presented to 

 strongly indicate a close correspondence of the measured temperature 

 variations to internal wave theory presented by Keulegan. 



VI. CONCLUSIONS 



This report is pertinent to internal temperature variations observed 

 at one site only — Texas Tower No. 4 in 185 feet depth off New York. 

 The conclusions drawn from analysis of the data may be considered 

 applicable only to that locality until studies elsewhere reveal the 

 presence of similar "solitary signatures." 



The following specific conclusions are drawn from the studies at 

 Texas Tower No. 4: 



10 



