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本文研究了 980 32 6航次厦门浔江湾海水中2 2 4Ra和2 H的含量与分布 ,揭示其水体交换特征。表层水体中2 2 4Ra的放射性比度介于 4.94～ 1 3.70Bq/m3之间 ,平均值为 7.2 6Bq/m3 ;δD测值介于 - 8.9× 1 0 -3 ～ - 5 .7× 1 0 -3 之间 ,平均值为 - 7.3× 1 0 -3 。表层水2 2 4Ra和2 H的分布表明 ,浔江湾在一定程度上受到西港水的入侵 ,湾内外水体的不完全交换造成外海水在该湾中部的滞留。
In this paper, the content and distribution of 2 2 4 Ra and 2 H in 980 32 6 sea voyage of Xiamen Qijiang Bay were studied to reveal the water exchange characteristics. The radioactivity ratio of 2 2 4Ra in the surface water ranged from 4.94 to 1.70 Bq / m 3 with an average of 7.2 6Bq / m 3. The δD value ranged from-8.9 × 10 -3 to -5.7 × 10 -3, with an average of - 7.3 × 10 -3. The distribution of surface water 2 2 4Ra and 2 H shows that Qijiang Bay is to some extent affected by the intrusion of the West Hong Kong Water and incomplete exchange of water bodies inside and outside the bay causes the retention of open seawater in the central part of the Bay.