Abstract
THE work of the United States ice patrol on the Atlantic shipping routes during 1931 (International Ice Observation and Ice Patrol Service, 1931. Coast Guard Bulletin, No. 21) records a most unusual year. The normal number of icebergs coming south of lat. 48° N. during the year is 419; this is the mean of thirty-two year's records. During 1931 only 13 icebergs came so far south and ten of these were in May, which is the month of widest spread ice distribution on the Grand Banks. March showed two bergs and April one south of the 48th parallel. There is only ono record of another year so free from ice—in 1924 only eleven bergs were recorded. These figures may be contrasted with more than a thousand in 1929, 1912, and 1909. The report contains the usual chart of the distribution of ice on the routes frequented by shipping and also the records of oceanographical observations. An interesting appendix gives an account of the ice observations made in the polar seas during the cruise of the Graf Zeppelin in July 1931 over the Barents and Kara Seas.
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Atlantic Ice. Nature 130, 995 (1932). https://doi.org/10.1038/130995a0
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DOI: https://doi.org/10.1038/130995a0