摘要
根据1994年海上观测资料讨论东海磷酸盐的分布。指出黑潮水与沿岸水有一明显界面，而黑潮次表层水在此西北部沿陆架涌升并使用平流一扩散模型探讨200～600m层磷酸盐的再生速率的范围和平均逗留时间。
The distribution of phosphate in the East China Sea is preliminarily studied on the basis of the observation data during the early spring of 1994. The concentration of phosphate in the stirface water is very low (less than 0. 2 μmol. dm-3), except in the coastal area (higher than 0. 4 μmol. dm-3), and has a uniform distribution.On the contrary, the high concentration of phosphate is found in the bottom water,and it is found that the phosphate content increases with depth. A dense horizontal gradient zone of phosphate is found at 50m, which indicates the different chemical character of water masses and the moving direction of the water system. A section of phosphate in the southern side of the Survey area is studied, and it is shown thatthere is a clear boundary between the Kuroshio water and the coastal water, and a Kuroshio suhsurface water has uplifted along the shelf in the northwest part. The regeneration of phosphate in the layer between 200m to 600m is studied using the advection --diffusion model. The results are as follows: the phosphate regeneration rates are in the range of 6. 7~20pmol. dm-3. a-1, and the value of average resident time of phosphate is in the range of 15 to 80 days.
关键词
东海
磷酸盐
分布
再生速率
Phosphate
East China Sea
regeneration rate
distribution
average resident time
