Science. 1959 Apr 3;129(3353):901-3. doi: 10.1126/science.129.3353.901.
Tritium measurements in the Arctic Ocean confirm a marked near-surface stratification. Sea water at 400 meters' depth, however, is less than 3 years old, suggesting a contribution to this water mass due to sinking along the continental shelf. The top ice layer on the Ward Hunt Island ice field is older than 25 years.
在北冰洋进行的氚测量证实了明显的近表面分层现象。然而，400 米深处的海水的年龄不足 3 年，这表明由于沿着大陆架下沉，这部分海水对该水体有一定的贡献。沃德亨特岛冰原上的最顶层冰的年龄超过 25 年。
