Ice-Cover and Ice-Ridge Contributions to the Freshwater Contents of Hudson Bay and Foxe Basin
Ice-Cover and Ice-Ridge Contributions to the Freshwater Contents of Hudson Bay and Foxe Basin
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冰盖和冰脊对哈德逊湾和福克斯盆地淡水含量的贡献
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
S. Prinsenberg
中科院分区：
文献类型：
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作者：
S. Prinsenberg
径流和降水每年为哈德逊湾增加65厘米的淡水。冰盖在一年的时间内并没有对淡水的新贡献做出贡献;然而，在每周的时间尺度上，它的贡献与径流一样多或更多。海湾平均冰的最大厚度为160厘米，当考虑升华时，代表140厘米的淡水层。这些淡水是每年径流和降水量的两倍，在春季增加到表层，在秋季从表层移走。哈德逊湾和福克斯盆地的淡水收支表明，产生的冰比冰厚数据显示的多90%。这种差异的部分原因可以归因于冰脊中积累的冰，哈德逊湾的冰厚为25厘米，福克斯盆地的冰厚高达58厘米，那里出现了极端粗糙的冰况。关键词：哈德逊湾，福克斯盆地，冰盖，冰脊，淡水含量
Runoff and precipitation add 65 cm of fresh water to Hudson Bay annually. The ice cover does not account for a new contribution of fresh water over a one-year period; however, on weekly time scales, it contributes as much or more than runoff. The maximum thickness of ice averaged over the bay is 160 cm and represents a 140 cm layer of fresh water when sublimation is accounted for. This fresh water is twice as large as the amount annually brought in by runoff and precipitation and is added to the surface layer in the spring and removed from the surface layer in the fall. Freshwater budgets of Hudson Bay and Foxe Basin indicate up to 90% more ice is produced than indicated by ice thickness data. Part of this difference can be attributed to the ice accumulated in ice ridges, which for Hudson Bay accounts for 25 cm of ice and as much as 58 cm of ice for Foxe Basin, where extreme rough ice conditions occur. Key words: Hudson Bay, Foxe Basin, ice cover, ice ridges, freshwater content