P aper 19 



data plotted directLy from the traces/ except section 7 

 based on mechanical bathythermograph data. 



which is 



The bottom temperature diagram (Fig. 19. Z)/ prepared by the same 

 method as in previous years/ is an interpretation of where 

 isothermal surfaces intersected the bottom throughout the year 

 (Chamberlin 1978). 



The occurrence of warm core Gulf St 

 accordance with Mizenko and Chamberli 

 as duration Lines at the bottorr, of Fi 

 were determined from the Experimen 

 (EOFA)^ and from infrared iTiaqery 

 satellites. The duration lines are 

 used for the 1975 analysis (Chamberlin 

 of each line is on the approximate d 

 boundary of the eddy crossed 70Wlb' an 

 eddy completely passed south of 39N30' 

 apparently passed south of New England 

 (eddy 76 D ) showed a clear surface 

 satellite imagery/ and thus could be t 

 duration lines of the first two (edd 

 in Figure 19. Z because their times 

 uncertain. Less strongly developed th 

 surface temperature contrast in the 

 their passages and were detectable 

 occasions from tongues of Shelf Water 

 Water in the pattern generally associ 

 eddy . 



ream eddies/ numbered in 



n (Paper 15)/ are indicated 



gure 19.2. The durations 



tal Ocean Frontal Analysis 



from NOAA environmental 



based on the same criteria 



1978)/ that is/ the start 



ay when the western surface 



d the Line ends the day the 



Of the three eddies that 



during 1976/ only the Last 



temperature contrast in the 



racked with assurance. The 



ies 76B and 76C) are dashed 



of passage are rather 



an eddy 76D/ they showed no 



satellite imagery during 



only by inference on a few 



projecting into the Slope 



ated with entrainment by an 



HIGHLIGHTS OF TEMPERATJRE SECTIONS 



The folLouinq sections are illustrated in Appendix 19.1. 



Section 1. NJAA RV Keiez Cruise 76-01/ 4 February. 



Temperatures in this short section from the inner shelf were 3C 

 colder offshore to 7C colder inshore than in mid-December/ seven 

 weeks earlier (Chamberlin 1978). The water was mixed to a depth 

 of about 20 m . The 1-2C temoerature inversion in the underlying 

 water indicated the presence of warm Slope Water near bottom on 

 the outer sheL f . 



Section 2. 

 Thermal 



NOAA RV Kelez Cruise 76-02/ 9-1C February, 

 structure in this detailed section was 



unusually 



^Issued weekly by the U.S. Niavy Oceanogr aph i c 

 tions Research Division/ Suitland/ MD 20374. 



Office/ App L i c a- 



316 



