

Water 

 Mass 



Time Interval 





Number of Profiles 



Ship/Platform 



XBT 



Hydrocast 



CTD/SV 



DE STEIGUER 



1 



25-31 August 



28 



— 



- 





2 





57 



- 



- 





3 





47 



- 



- 





4 





45 



- 



- 



MOANA WAVE 



1 



18-31 August 



22 



1 



2 





2 





33 



- 



4 





3 





98 



1 



14 





4 





24 



1 



2 



FLIP 



1 



21-31 August 



8 



- 



- 



TOTALS 362 

 Table 4. CAPER measurements. 



22 



RAPLOC/DEEPTOW 



The RAPLOC/DEEPTOW measurements were made off the coast of Southern 

 California during October 1975 at the location shown in figure 4. The XBT measurements 

 were all made from the Marine Physical Laboratory research platform ORB. Measurements 

 were made at anchor at the location shown by the solid square and under tow at 5 knots 

 along the track shown as a solid line. Three independent XBT systems, comprising two 

 460-m systems (designated as A and B) and one 1830-m system (designated as C), were used 

 to make simultaneous measurements. These provide data for a special relative accuracy 

 study. Table 5 lists, for each XBT system, the time interval, the number of at-anchor 

 and in-transit XBT profiles attempted on each system, and the number of CTD/SV profiles. 

 The CTD/SV profiles were made with a Plessey Environmental Systems 9040-4C profiling 

 system. In addition, independent surface temperatures were measured with a bucket 

 thermometer. 





Time Interval 







Number of Profiles 





XBT 



XBT 





System 



In Transit 



At Anchor 



CTD/SV 



A 



17-30 October 



15 





67 



11 



B 



17-28 October 







49 





C 



17-28 October 







18 





TOTALS 15 134 



Table 5. RAPLOC/DEEPTOW measurements. 



11 



14 



