Table I, — Salinity {°/oo) of ice core sauiples at Kainan Bay 



(Salinity of surface sea water at edge of fast ice — 33. U6 °/oo) 



with little evidence of loose or drifting snow. The area was relatively 

 flat with 6-inch sastrugi present, which were probably caused by recent 

 strong winds from the south. Resiilts of temperature, density, and 

 Rammsonde hardness tests are shown in figure 23. A general picture of 

 snow stratigraphy is presented for station 1 (fig. 2U). At station 1 

 the neve was of moderately high density (between O.ij and 0,5 gm./cm.3) 

 below the first 50 cm, Rammsonde hsr-dness test^ showed highly resistant 

 subsurface layers as shown in the p tratigraphic picture of the pit. At 

 station 2 there was exceptional hardness as shown by Rammsonde teste 

 100 cm. below the s\trface. 



Admiral Byrd Bay had about l/2 mile of fast ice, which was estimated 

 to be from 15 to 20 feet in thickness, at the head of the bay. Along 

 the margins of the bay the shelf ice was from 15 to 50 feet in height. 

 On the south side of the bay a 2-meter snow pit was dug in the neve 

 of the shelf ice h miles south of the bay (station O). The snow sur- 

 face was level with 12-inch sastrugi present 10 - 20 feet apart. 

 A covering of loose snow from 2 to 6 inches deep was present. Tempera- 

 ture, density, and Pammsonde profiles were obtained at station (fig. 25). 

 Snow stratigraphy at the pit is shovm in figiu-e 26. Densities obsejrved 

 in the snow pit (station O) varied greatly, being very high near the sub- 

 surface ice layers and low in the fluffy snow of the surface. Rammsonde 

 profiles also were made at points 1 and 2 miles south, 1 mile east, and 

 2 miles went of the snow pit. The average hardness profile of the five 

 Admira3. Byrd Bay stations is compared with the profile obtained at sta- 

 tion in fji.gure 25. An ice layer below a depth of 100 cm. at the snow 

 pit was apparent in the Pammsonde profiles for the other four stations 

 and appeared to be typical of locality. This ice layer provided a 

 hard sub-base in the snow below 100 cm. 



66 



