Paper 15 



for sea surface temperature (about 6 to 8 images available per 

 day)/ and the Experimental Gulf Streati Analysis^ issued weekly by 

 the National environmental Satellite Service. For the special 

 analysis of the February-April periods NOAA-4 satellite imagery 

 was also used. 



Pos it 

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Eddies that made surface contact with the Gulf Stream were still 

 regarded as eddies^ so long as it appeared from the imagery that 

 their circulation was largely separate from that of the Stream. 

 In the Experimental Ocean Frontal Analysis^ eddies which later 

 made such contact were labeled as meanders. 



tiylhile the metnods used here are basically similar to those of 

 Bisagni (see footnote 2)/ there are some important differences in 

 detail. On his "trajectory" Tiapsx Bisagni shows all positions^ 

 sure and estimated^ from several sources. We have avoided 

 plotting esti .Bated positions except where long time gaps exist 

 between sure positions/ and have given only one position for an 

 eddy on any given date. 



Though similar data sources were used/ their quality has improved 

 markedly since the period 1974-75 studied by Bisagni. This is 

 especially true of the Experimental Ocean Frontal Analysis 

 charts/ which during 1974 lacked the detail/ accuracy/ and 

 documentation .which has since been incorporated — especially 

 during 197o. This improvement has allowed more accurate data to 

 be presented here than was av=iil3ble to Bisagni. 



The dates of eddy formation and destruction were interpolated 

 when necessary. For example/ if a feature was clearly a Gulf 

 Stream meander on 15 October and an eHdy on 19 October/ it is 



Chamberlin/ J. L. 1977. Monitoring effects of Gulf Stream 

 meanders and warm core eddies on the continental shelf and slope. 

 Int. Comm. Northwest Atl. Fish./ Sel. Pap. 2:145-153. 



260 



