These requirements have been met by using 

 recording stations of type A modified by the 

 installation of telemetering thermometers 

 along the mooring wire (fig. 3,C). For these 

 installations the mooring wire is insulated 

 from the sea by a coating of polyethylene and 

 by special fittings at each end of the wire so 

 that the wire can carry electrical power and 

 telemetered signals to and from the ther- 

 mometers. That is to say, the mooring wire 

 and instrument string are the same. 



As many as 10 thermometers can be operated 

 simultaneously without ambiguity of the tele- 

 metered signals. The ultimate accuracy ap- 

 pears to be of the order of 0.005° C. but 

 practical difficulties have reduced this to 

 0.012° C. in the field. 



A complete mooring was installed for test 

 in 125 ft. of water, 3,000 ft. offshore from the 

 Scripps Institution. Two thermometers were 

 used and fastened 2 ft. apart at a depth of 

 80 ft. A pressure gauge was also installed, 

 but developed various faults so that no record 

 was obtained. Satisfactory temperature rec- 

 ords were obtained from April 5-25 and May 

 12-20, 1960. During these periods, wind and 

 sea conditions were gentle to moderate except 

 for a period of 2 days during which there was 

 a 20-knot onshore wind. The skiff rode at its 

 mooring well but 11 hours of thermometer 

 data were illegible, presumably because jerk- 

 ing of tape reels in the tape recorder spoiled 

 the recording. 



The short section of temperature record 

 from one thermometer (fig. 4) shows a charac - 

 teristic feature of the entire observation: 

 the existence of two regimes. In one, saw- 

 tooth temperature fluctuations of semidiurnal 

 tidal periodicity are prominent. At a later 

 time the second regime, in which the fluc- 

 tuations become more irregular, sets in. This 

 behavior is in close accord with thenearshore 

 observation of internal tides, reported by 

 Arthur (1954). 



Subsequently, a series of temperature read- 

 ings was obtained over a 2-day period from 

 each of nine thermometers along a 1,100-m. 

 mooring cable in the San Diego Trough. 

 Temperature oscillations were large and 

 showed a roughly semidiurnal periodicity, at 

 depths of 50 m. and 450 m. The records were 

 analyzed to describe and measure the internal 

 waves responsible for the oscillations. 



Galapagos Islands Station (p. Richardson) 



The STOR program during 1957-58 helped 

 to establish a tide gauge station in the Gala- 

 pagos Islands (fig. 1) as part of the Scripps 

 Institution's IGY Island Observatories Pro- 

 gram. It did this partly in the belief that it 



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