Table 1. — Observations at fronts 



Front 



Date 



Local time 

 of day^ 



Feature studied 

 or activity 



Method of 

 observation 



Part of 



front - 



warm (w), 



middle (m), 



or cool (c) 



side 



Observations , 

 surveys, or 

 casts (code in 

 parenthesis) 



1960 

 7 May 



7 May 



7 May 



10 May 



10 May 



10 May 



10 May 



10 May 

 10 May 



21 May 



22 May 



21 May 



22 May 



23 May 



23 May 

 23 May 



23 May 



0750-1A30 



0750-U30 



1000; 1035; 

 1150; 1310 



0750-1855 



0750-1855 



0800-0845; 

 0930-1020; 

 1115-1150 



1250-1306; 

 1430-U51 



1800; 

 1836 



1505-1540; 

 1705-1740 



0105(21)- 

 1700(22) 



0105(21- 

 1700(22) 



0255-1900 



0255-1900 



1500-1522; 

 1808-1827 



1150-1205; 

 1315-1340; 

 14^5-1455 



Track 



Sea surface tem- 

 perature 



Surface currents 



Track 



Sea surface tem- 

 perature 



Temperature to 

 ~ 100 m.; sur- 

 face salinity 

 (one pass only) 



Temperature, sa- 

 linity, oxygen, 

 phosphate, to 

 ~ 200 m. deep 



Surface currents 



Zooplankton stand' 

 ing crop 



Track 



Sea surface tem- 

 perature 



Track 



Sea surface tem- 

 perature 



Temperature, sa- 

 linity, oxygen, 

 phosphate, to 

 ~ 200 m. deep 



Chlorophyll a (as 

 measure of phyto- 

 plankton stand- 

 ing crop) 



D-r.2 navigation; 

 l.a.n.3 fix 



Thermograph survey 



GEK jog'^ 



D-r. navigation; 

 l.a.n.3 fix 



Thermograph 



BT passes with sur- 

 face water samples 

 on one pass 



Hydrocast' - 10 

 Hansen bottles 



GEK jog* 



Oblique, 1-m. net 

 tows, to ~ 300 m. 

 deep 



D-r.^ navigation; a 

 few bearings on land 

 marks 



Thermograph survey 



D-r.^ navigation; 

 l.a.n.3 fix 



Thermograph survey 



Hydrocast^ - 10 

 Nansen bottles 



Plastic sampler cast: 

 samples at 0,25,40 m. 



w, m, c 



w, m, c 



w, m, c 



w, m, c 



w, m, c 



Number 



See footnotes at end of table. 



