Deep-Water Flow over the Lomonosov Ridge in the Arctic Ocean
Deep-Water Flow over the Lomonosov Ridge in the Arctic Ocean
复制标题
北冰洋罗蒙诺索夫海脊上的深水流
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
J. Whitehead
中科院分区：
文献类型：
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作者：
M. Timmermans;P. Winsor;J. Whitehead
北冰洋可能通过其对深水形成速度的影响以及随后对全球温盐环流的影响来影响全球气候。在这里，与世隔绝的加拿大盆地的深层沃茨的更新被量化了。利用水力学理论和水文观测，作者计算了这种更新的程度，迄今为止的情况下，无法直接测量。体积流量Q 0.25 - 0.15 Sv（Sv 10 - 6 m-3 s-1）从欧亚盆地到加拿大盆地通过一个深的差距在划分罗蒙诺索夫海岭的估计。深水更新时间估计的基础上，这一流量是一致的14 C隔离年龄。流量是足够大的，它有一个更大的impac n加拿大盆地深水比地热通量或扩散通量在深水边界。
The Arctic Ocean likely impacts global climate through its effect on the rate of deep-water formation and the subsequent influence on global thermohaline circulation. Here, the renewal of the deep waters in the isolated Canadian Basin is quanitified. Using hydraulic theory and hydrographic observations, the authors calculate the magnitude of this renewal where circumstances have thus far prevented direct measurements. A volume flow rate of Q 0.25 0.15 Sv (Sv 10 6 m 3 s 1 ) from the Eurasian Basin to the Canadian Basin via a deep gap in the dividing Lomonosov Ridge is estimated. Deep-water renewal time estimates based on this flow are consistent with 14 C isolation ages. The flow is sufficiently large that it has a greater impac to n the Canadian Basin deep water than either the geothermal heat flux or diffusive fluxes at the deep-water boundaries.