242 
PACIFIC SCIENCE, Vol. XX, April 1966 
TABLE 2 
Physical Environment of Antarctic Ocean Plankton Stations 
DEPTH 
( meters ) 
TEMPERATURE 
(°C) 
SALINITY 
(o/qo) 
6t 
SAd 
OXYGEN 
(ml/1) 
Station Ed-1. Entrance of Kainan Bay. Color, 20. Transparency, 4. 
Surface 
-0.50 
33.93 
2729 
0000 
10.94 
50 
-1.25 
34.08 
2744 
0036 
8.88 
100 
-1.66 
34.15 
2751 
0066 
8.22 
150 
-1.87 
34.21 
2756 
0094 
8.45 
200 
-1.91 
34.22 
2757 
0120 
8.48 
300 
-1.87 
34.35 
2767 
0166 
8.04 
400 
-1.83 
34.39 
2770 
0205 
7.85 
500 
-1.82 
34.38 
2770 
0243 
7.99 
600 
-1.83 
34.47 
2783 
0277 
7.90 
Station Ed-2. 40 km north of Kainan Bay. Color, 20. Transparency, 4. 
Surface 
0.47 
34.21 
2746 
0000 
10.59 
50 
-1.37 
34.22 
2755 
0031 
9.25 
100 
-1.78 
34.27 
2761 
0056 
8.23 
150 
-1.86 
34.32 
2765 
0079 
8.31 
200 
-1.88 
34.39 
2770 
0100 
8.04 
Station G-l. 
156 km north of Kainan Bay. Color, 
14. Transparency, 9. 
Surface 
-0.93 
34.11 
2745 
0000 
not 
50 
-0.60 
34.15 
2750 
0030 
observed 
100 
-1.72 
34.23 
2757 
0057 
150 
-1.75 
34.29 
2762 
0082 
200 
-1.79 
34.32 
27 64 
0104 
250 
-1.85 
34.31 
2764 
0127 
300 
-1.89 
34.31 
2764 
0149 
Station Ed- 
-8. 1 km off Cape Crozier. Color, 20. Transparency, 3. 
Surface 
-1.39 
34.20 
2754 
0000 
9.97 
50 
-1.39 
34.27 
2760 
0026 
9.88 
100 
-1.28 
34.43 
2772 
0047 
9.40 
150 
—1.16 
34.31 
2762 
0068 
9.60 
200 
-1.27 
34.35 
2766 
0091 
8.68 
300 
-1.86 
34.54 
2783 
0119 
8.61 
tion Ed-8, off Cape Crozier, the diatom Trigo- 
nium arcticum was found only in the 200—300 
m (bottom) cast. Moreover, it occurred in bot- 
tom surface samples together with fragments of 
decaying algae. 
An investigation was then made of vertical 
circulation at station Ed-1, to determine if sink- 
ing could account for these biota living beneath 
the compensation depth. According to Vowin- 
ckel (1957) the prevailing wind at Kainan Bay 
(Little America), Ross Ice Shelf, is easterly dur- 
ing the month of January. Considering the mag- 
nitude of the Coriolis force at this high latitude, 
it seems the light shallow layer would be trans- 
