ARCTIC OCEAN WATER MASS BALANCE FROM ISOTOPE DATA
ARCTIC OCEAN WATER MASS BALANCE FROM ISOTOPE DATA
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DOI：
10.1029/jc089ic04p06373
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发表时间：
1984-01-01
影响因子：
3.6
通讯作者：
HUT, G
中科院分区：
文献类型：
--
作者：
OSTLUND, HG;HUT, G
氧18和氚同位素的分布以及盐度的分布表明，北极海盆表层水和盐跃层沃茨的停留时间为10年。我们发现，每年净生产0.59米的海冰和输入的1.16米的淡水从大陆河流径流，当地降水，和白令海峡盐度不足。使用这些数字的流域面积值得出长期平均总净生产和运输率为0.15 Sv的冰和0.18 Sv的大气成分，不包括白令海峡水。如果，此外，一个合理的深度剖面的相对流速是假定的外流，每年输入的2.8西弗的大西洋和白令海峡的水需要补充上层和盐跃层沃茨。这些数字应该好到±20%，并且是多年平均值。同位素数据清楚地表明，巴伦支海是大西洋水流入该盆地的流入区，但那里发生了冰的净出口。
The distributions of the oxygen 18 and tritium isotopes, and of salinity, yield a residence time of 10 years for the surface and halocline waters of the Arctic Basin. We find a yearly net production of 0.59 m of sea ice and an input of 1.16 m of freshwater from continental river runoff, local precipitation, and Bering Strait salinity deficiency. Using the basin area value with these numbers gives long‐term average total net production and transport rates of 0.15 Sv of ice and 0.18 Sv of meteoric component, Bering Strait water not included. If, in addition, a reasonable depth profile of relative current velocity is assumed for the outflow, a yearly input of 2.8 Sv of Atlantic and Bering Strait water is needed to replenish the upper and halocline waters. These numbers should be good to ±20% and are multiyear averages. The isotope data clearly indicate that the Barents Sea is an inflow area for Atlantic water to the basin, but that net export of ice occurs there.