The Inhomogeneous Distribution of Tritium and Radiocarbon in the Abyssal Southern Ocean

南冰洋深層水中氚及碳14之不均衡分布

陳鎮東(Chen-Tung A. Chen) ； Michael R. Rodman

《Terrestrial, Atmospheric and Oceanic Sciences》 1卷1期 (1990/03) Pp. 91-109

摘要

本文分析GEOSECS計畫中取得之南冰洋氚及碳14數據。將GEOSECS於大西洋之測站76，77，82，85，87，89，9l及SOMOV-8l航次之所有測站所得之過量二氧化碳與碳14資料作對比後發現，這些資料與氚一樣，均顯示於深水中之分佈不平均。本文最後計算出南極底層水當形成時，其中所含表層水中碳14之原始値爲-139.3×10^(-3)。

並列摘要

The tritium and radiocarbon measurements taken at the Southern Ocean GEOSECS stations were analyzed. Excess CO2 for the Atlantic GEOSECS stations 76,77,82,85,87,89,91 and for all the stations of the SOMOV-81 cruise were correlated with the radiotracer data. Radiocarbon and excess CO2 support the tritium data showing that these tracers are not homogeneously distributed in the deep-water column. The preformed radiocarbon value of the Antarctic Surface water component in the Antarctic Bottom Water was estimated to be-139.3×10^(-3).