radio. Distance along the line was measured using the 

 "Autotape" positioning system. Alternately, the helmsman 

 steered a predetermined course while the transit operator 

 turned angles from a known backsight. As above, all 

 positional data were automatically recorded on paper tape 

 with angles logged into the field notes. 



Specification sheets for the "Autotape" system, the 

 "Maretrack" system, and the theodolite are provided in 

 Append ixl. 



2 . 4 In Situ Current, Temperature, and Salinity Monitoring 



Continuous measurements of current speed and direction, water 

 temperature, and salinity were obtained by installing an 

 Endeco Type 174 in situ recording current meter on each of 

 two su rf ace- f 1 1 owi ng moorings deployed at stations east and 

 southeast of Millstone Point (Figure 1). The meters were 

 positioned 5 feet below the surface on a suspended taut line 

 which was itself moored to the bottom (Figure 2). Two 

 stations (JCE and JCIJ) were occupied on 24 and 25 August 1987 

 and two stations (TTIC and HP) were occupied on 26 August. 

 Data was recorded in digital form on magnetic tape for later 

 process i ng . 



The Endeco type 174 instrument has been designed to eliminate 

 the considerable effects of surface waves. The ducted 

 iinpellor cancels the action of wave induced orbital 

 velocities while a flexible tether decouples the instrument 

 from mooring line motion. A specification sheet for the 

 Endeco 174 current meter is included in Appendix I. 



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