The major water transport at all levels in the Sulzberger Bay-Cape Colbeck area 
appears to be to the west along the Edward VII Peninsula. It flows past Cape Colbeck 
and merges with the southward moving component of the major clockwise circulation. 
It is suggested that the water of the Eastern Ross Sea flows southward against the 
Ross Ice Shelf, where the near-surface water is deflected to the west and the deeper 
water flows under the shelf, possibly around the southern tip of Roosevelt Island, and 
emerges well to the west. An examination of the dynamic analysis charts (Figs. 9 and 
10) supports such a postulation for the southward-flowing portion of this circulation. 
C. Amundsen Sea Area 
1. General 
The Amundsen Sea lies between Thurston Island (formerly believed to be a 
peninsula) on the east and Mount Siple 400 miles to the west. The area surveyed 
was about 250 miles north of the Amundsen Sea coastline between 105° and 120°W. 
Twenty-four stations were occupied during the period 27 January to 5 February 1961, 
most of which were taken in 7/10 to 9/10 rotten pack ice. 
The vertical distribution of observed physical and chemical properties is shown 
for the Amundsen Sea area stations in Figures 11 through 15. One west-east cross- 
section is presented for stations to the north (Fig. 11) and one for stations to the south. 
of 70°S (Fig. 12). Three north-south cross-sections are given (Figs. 13 through 15). 
Bottom contours in these sections are based on wire soundings taken on station. 
2. Physical Properties 
a. Temperature 
Temperature cross-sections show the thin layer of Antarctic Surface 
Water with Winter Water immediately beneath, and the rapid transition to Antarctic 
Circumpolar Water. Bottom Water with temperatures less than 0.4°C was present at 
several stations. 
Maximum temperatures were between 1.50° and 2.00°C, except at the two 
southernmost stations, 43 and 42, where temperatures were slightly colder than 1.50°C. 
Surface temperatures varied widely ranging from 0.23° to -1.77°C; a subsurface mini- 
mum (Winter Water) was observed in the upper 100 meters at all stations. Between 100 
and 200 meters, a rapid temperature increase, (the transition zone into Circumpolar 
Water), is indicated by the heavy concentration of isotherms. Farther south, this 
transition zone was found at greater depths. Below the temperature maximum, a 
gradual decrease to bottom temperatures of around 0.4°C was observed. 
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