National Geographic : 1965 Nov
Later I saw a team of men lower meters equipped with propellerlike vanes through the ice to record even the slightest current at various levels. Relatively warm Atlantic currents flow north toward the Arctic, mostly between Iceland and Greenland. Becoming cooler, they sink and enter the polar ocean below the surface. Cold currents flowing south, also east of Greenland, carry icebergs into Atlantic shipping lanes. This was the path Arlis II was to follow to its demise. U. S. and Russian scientists have located two main current systems in the Arctic. One sweeps west from the East Siberian and Laptev Seas toward Vest Spits bergen and Greenland. The other broad stream swirls clockwise around the Beaufort Sea on the North Amer ican side of the ocean (see Top 'of the World map). It is this last current that holds the ice islands in "orbit." This is no rapid stream: T-3 has taken more than ten years to make one circuit. Arctic Ocean ice islands average two to three miles 685 EKTACHROME(ABOVE) AND KODACHROMESBY TED SPIEGEL © N.G .S .