摘要
伯劳特湾中沉积物的沉积速率在０．１３～０．３３ｃｍ ／ａ 之间，平均值为０．２３ｃｍ ／ａ。事故释放的２３９Ｐｕ 在各个站位中的垂直分布在次表层都有一个最大值，这个值出现在５～７ｃｍ 深处。在最大值之前２３９Ｐｕ 的比活度随深度的增加呈指数增加，最大值之后迅速下降到本底水平。事故释放的２３９Ｐｕ 在沉积物中的垂直分布与沉积速率和生物的混合速率有关。
The sedimentary rate of the sediments in Bylot Sound ranges from 0.13～0.33 cm/a, averaging is 0.23cm/a. The vertical distributions of 239 Pu released by accidents are quite similar, having a maximum volume in the sublayers of sediment which appears in the depths of 5～7cm. Before the maximum volumes the specific activities of 239 Pu increase exponentially with depth, and after the maximum volumes they descend to background rapidly. The vertical distributions of 239 Pu released by accident are related to the sedimentary rate and bioturbation, which can be simulated by a simple mathematical model.
出处
《黄渤海海洋》
CSCD
1999年第4期48-53,共6页
Journal of Oceanography of Huanghai & Bohai Seas
关键词
沉积速率
钚239
比活度
垂直分布
伯劳特湾
Sedimentary rate Specific activities of 239 Pu Vertical distribution of 239 Pu
