Color variations ranged from 2% to 20^ yellow, with two observa- 

 tions of 2%y eleven of 5%, six of 9%, six of 1U%, and one of 20^. 

 The bluest water (2^ yellow) was found in the Weddell Sea, and the 

 one observation of 20^ yellow (greenish-blue water) was taken in late 

 December in McMurdo Sound during a period of heavy plankton growth. 



Table 1, Transparency and Water Color 



Date 



8 Nov 1956 



9 Nov 1956 

 9 Nov 1956 



10 Nov 1956 

 18 Dec 1956 



1 ^iar 1957 



28 Oct 1956 

 4 Nov 1956 

 10 Nov 1956 

 21 Dec 1956 

 27 Dec 1956 



8 Feb 1957 

 14 Feb 1957 



9 Dec 1956 

 10 Dec 1956 



10 Dec 1956 



11 Dec 1956 



11 Dec 1956 



12 Dec 1956 



13 Dec 1956 



15 Dec 1956 



17 Dec 1956 



18 Dec 1956 

 20 Dec 1956 



27 Dec 1956 



28 Dec 1956 



16 Jan 1957 

 16 Jan 1957 

 20 Jan 1957 



13 Feb 1957 



14 Feb 1957 



Position 



Transparency 





(Meters) 



Ross Sea 





76°18'S, 174°56'E 



20 



74°55'S, 174°53'E 



22 



73°47'S, 175°08'E 



20 



72°25'S, 174°10'E 



22 



69°10«S, 177°55'E 



38 



Kainan Bay 



78°10'S, 167°26'E 



KcMurdo Sound 



77°36'S, 166°07'E 



77°40'S, 166°14'E 



77°49'S, 166°29'E 



770391s, 166°C2'E 



77°43'S, 166°22'E 



Vincennes Bay 



66°16'S, 110033 'E 

 66°12'S, 109°56'E 



Weddell Sea 



55°18 

 56°44 

 57°34 

 58°37 

 59°37 

 60°19 

 60°33 

 59°28 

 61°01 

 62°39 

 67°33 

 71°18 

 72°00 

 75°35 

 76°02 

 77°21 

 75°C7 

 72°47 



'S 



61°12' 



'S 



55°32' 



«S 



53°10' 



•Sj 



44°49' 



'S 



27°25' 



'S 



44°23' 



'S 



37°20' 



'S 



25O091 



'S 



15039, 



'S 



14°21' 



'S 



11°41' 



'S 



13°32' 



'S 



15°14' 



'S 



57°48' 



'S 



56°30' 



'S 



44°30' 



'S 



25°55' 



t 5 



21°07' 



20 

 47 

 15 

 5 

 15 



12 



7 

 6 

 9 

 9 

 7 

 6 

 14 

 15 



9 



20 

 15 

 18 

 21 

 17 

 16 

 10 



Water Color 

 (Percent yellow) 



14 



14 



14 



5 



14 



5 

 5 

 9 



20 



2 

 5 



9 

 9 



14 

 9 

 2 

 5 

 2 



14 

 5 

 5 

 9 

 5 

 5 

 5 

 9 



59 



