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根据 1 999年和 2 0 0 3年中国北极科学考察航次 ,从Canada海盆收集温、盐、深和营养盐浓度数据 ,用文献报道的低浓度1 2 9I和高浓度金属钡 (Ba)来指示太平洋源水、用相应的高浓度1 2 9I和低浓度Ba来指示大西洋源水 ,划分了该海盆物理化学特征的 4个水团。表层水 ( <40m)的盐度从 2 5至 31 .6;硝酸盐处于耗尽水平 ,而磷酸盐和硅酸盐处于最低水平。营养盐再生水大致位于 40— 2 0 0m ;盐度特征为 31 .6— 33.1 ;营养盐浓度一致增至最高 ;极大峰的盐度在 33.1附近 ,其位温则处于最低水平 (约 - 1 .5°C)。混合水 (深约 2 0 0— 385m)盐度从 33.1至 34.8;位温从局域最低升至整个水柱最高的 0 .5 0— 0 .65 7°C ;营养盐则逐渐降低。深层水深度变化较大 ( 385m至 1 90 0m以下海底 ) ;但其盐度变化较小 ( 34.8— 34.9) ;位温则从最高降低到 - 0 .4至 - 0 5 4°C ;营养盐均轻微增加。结合文献中对于营养盐极大的年际观测 ,1 2 9I、Ba与氯氟烃CFC 1 1的浓度及3H 3He示踪年龄的结果分析表明 ,营养盐再生水是无季节性变化的、高年龄 (约 8— 1 5年 )的太平洋源水 ;深层为大西洋源水 ;而混合水团即为上述 2大源水的混合层。硅酸盐和磷酸盐的强极大指示优势种硅藻及其再生主导太平洋源水。
Based on the 1999 China Arctic Scientific Survey voyage in 1999 and 2003, data on temperature, salt, depth and nutrient concentrations collected from the basin in Canada are indicated by the low concentration of 1,219 I reported in the literature and the high concentration of metallic barium (Ba) Source water from the Pacific Ocean, corresponding to the high concentration of 129 I and the low concentration of Ba, indicate the source water of the Atlantic and divide the four water masses in the basin’s physico-chemical characteristics. Surface water (<40m) salinity from 25 to 31.6; nitrate at the depletion level, while phosphate and silicate at the lowest level. Nutrients reclaimed water is located at 40-2000m, salinity is 31.6-33.1, and the nutrient concentration is the highest. The maximum salinity is around 33.1 and the lowest temperature is about -1. 5 ° C). The salinity of the mixed water (depth of 200 ~ 385m) ranged from 33.1 to 34.8; the bit temperature increased from the lowest in the local area to 0.50-0.657 ° C at the highest water column; Deep water depth varies widely (from 385 m to 1 90 m below sea level); however, the salinity varies little (34.8-34.9); the bit temperature decreases from highest to -0.4 to -0.44 ° C; nutrients Are slightly increased. Based on the literature’s extensive interannual observations of nutrient values, analysis of the concentrations of 129I, Ba, CFC-11 with CFCs, and the 3H 3He tracing age showed that there was no seasonal change in nutrient-reclaimed water, (About 8 to 15 years) of the Pacific source water; the deep is the Atlantic source water; and the mixed water mass is the mixture of the two major source water. Strongly indicative of silicates and phosphates The dominant species of diatoms and their regeneration dominate Pacific source waters.