Paper 19 



temperatures alonj the Atlantic coast in February and subsequent 

 moderate air temperatures during the spring (Dickson 1976; 

 T auben see 1 97t> ) . 



Section 5. Polish RV Wieczno Cruise 76-o1r 10-11 April. 



The first rise in Shelf Water temperatures (<1C) was evidenced 

 in this section shoreward of the 6j-m isobath. At the bottom/ 

 the slope front was withdrawn offshore to the greatest depth 

 observed during the year. As a result/ bottom temperatures were 

 at their observed annual mininuTi in depths of S0-15C m. 



Section 6. Duke University 9\J Eastward Cruise E2B76/ 11-12 May. 



Development of the seasonal thermocline had defined the 

 underlying cold core which had a temperature minimum of about 

 5.5C. A "bubble" of water colder than 7C appeared to be 

 separated from the seaward side of the cold core. The slope 

 front/ with the lUC isotherm contacting bottom at a depth of 

 <b5 m/ was at a more nornial shoreward position than in the 

 previous section. 



Section 7. Sea Education Association PV Westward/ 16-17 May. 



This section/ constructed from mechanical bathythermograph 

 data/ resembled the previous one made five days earlier/ although 

 on the shelf the minimum temperature in the cold core was about 

 1C lower (A.2C) and the maximum in the warm Slope Water was 1C 

 higher (14. 6C). Detachment of w?ter from the offshore side of 

 the cold core appeared to be in progress. The elevation in 

 bottom temperature to 13C at depths below about 120 m/ as well as 

 the 14. 5C water/ indicated the presence of Gulf Stream warm core 

 edoy 76a beyond the offshore end of the section (Fig. 19.2). 



Section S. WHOl RV Kngrr Cruise 58/ 1-2 August. 



Surface temperatures/ as well as the steepness and shallowness 

 of the thermocline/ were at their observed annual maximums. Five 

 separate bodies of minimum te-nperature water (colder than 9C) 

 appeared in the cold core bottom water on the shelf/ and a 

 "bubble" of 9-5-10C water appeared to have "calved" from the 

 offshore side of the core. The slope front Lay shoreward of the 

 1jQ-m isobath/ as in the previous two sections/ but had an 

 unusually vertical configuration at depths below about 25 m. 



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