

XBT 



System 



Time Interval 



Number of Profiles 







XBT 





Experiments 



In Transit 



At Anchor 



STD/SV 



ORB-3 

 ORB-4 



A 

 B 



12-18 December 

 15-21 February 



23 

 23 



27 



33 

 33 



98 



12 

 16 



TOTALS 73 164 



Table 3. ORB-3 and ORB-4 measurements. 



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CAPER* 



The CAPER measurements were made off the west coast of Southern California 

 during six propagation loss runs (reference 10). The locations of these runs are shown by 

 the solid lines in figure 5. The dashed lines show the locations of near-surface water mass 

 boundaries crossed by the indicated runs, and the solid square shows the location of the 

 anchored FLIP, the receiving platform used during the propagation loss runs. XBT 

 profiles were made along the propagation loss tracks, shown in figure 5, by the USNS DE 

 STEIGUER, by the FLIP, and by the R/V MOANA WAVE in the vicinity of the propaga- 

 tion loss runs. Hydrocast and CTD/SV measurements were also made by the MOANA 

 WAVE. The CTD/SV measurements were made with a Plessey Environmental Systems 

 90404C CTD/SV profiling system. Table 4 lists the number of XBT profiles attempted by 

 the DE STEIGUER, MOANA WAVE, and FLIP, as well as the number of hydrocast and 

 CTD/SV measurements made by the MOANA WAVE. The FLIP measurements were 

 made with an 1830-m XBT system. In addition, when each XBT profile was made, an 

 independent surface temperature was measured with a bucket thermometer. 



*Combined Acoustic Propagation in EASTPAC Region. 



10. Naval Undersea Center TP 485, Combined Acoustic Propagation in EASTPAC Region (Exercise 

 CAPER): Sound-Speed Profiles, by E.R. Anderson and P.O. Hansen, September 1975. 



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