Tritium and Carbon-14 Distributions in Seawater from Under the Ross Ice Shelf Project Ice Hole

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Science  02 Feb 1979:
Vol. 203, Issue 4379, pp. 445-446
DOI: 10.1126/science.203.4379.445


The tritium and carbon-14 activities of seawater samples collected from 22 to 200 meters below the ice at the Ross Ice Shelf Project ice hole are reported. The tritium results show that the waters below the ice have exchanged with Ross Sea water since the advent of nuclear testing. The carbon-14 results indicate that waters in the upper layer exchange in time periods of less than 6 years. Measurements of these isotopes in seawater under the Ross Ice Shelf in McMurdo Sound show that this water has a different history.