3, Density- 

 Densities followed almost identical patterns with salinities at 

 each area. In the Bay of Whales a sharp drop in both salinity and 

 density was observed near the shelf ice face, and in Kainan Bay a 

 mass of water having lower salinity and lower density was pushing 

 in from the north, 



km Sound Velocity 



In the Bay of Whales area so\md velocities showed regular contours 

 shoreward with a slight upward trend at the station nearest shore 

 because of lower salJuities near the shelf ice edge, Sound velocity 

 decreased rapidly from the surface to about 100 meters depth and then 

 slowly increased to the bottom at 600 meters, A well defined sound 

 channel axis existed between $0 and 100 meters depth. This compares 

 favorably with similar shallow sound channels found in the Bering Sea 

 and in the eastern Arctic, In Kainan Bay, sound velocities were of 

 the same order of magnitude as at Little America. However, below 300 

 meters the velocities found at station 5 wei^ much lower than those 

 found at equivalent depths at stations 6 and ?• This marked decrease 

 in velocity may be accounted for by the cold water extending toward 

 the surface at station 5» The sound channel axis was present between 

 50 and 100 meters, as at little America, However, approaching shore 

 a difference in the depth of the sound channel was observed. The 

 depth of the sound channel at little America remained at about 100 

 meters until shore where there was a marked upward rise to 50 meters. 

 At Kainan Bay the reverse was truej the sound channel dropped from 

 $0 meters depth in the two seaward stations to 100 meters at the 

 station next to the fast ice of the bay. 



5 



