PROPAGATION OF INTERNAL TIDES FROM THE UPPER SLOPES OF THE BAY OF BISCAY
PROPAGATION OF INTERNAL TIDES FROM THE UPPER SLOPES OF THE BAY OF BISCAY
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DOI：
10.1038/321154a0
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发表时间：
1986-05-08
期刊：
影响因子：
64.8
通讯作者：
NEW, AL
中科院分区：
文献类型：
--
作者：
PINGREE, RD;MARDELL, GT;NEW, AL
凯尔特海（比斯开湾北部）的陆架断裂区的特点是整个夏季的海面温度降低（101 °C）。凉爽的区域沿着斜坡延伸沿着300公里，并显示出表面浮游植物丰度的增强水平。据推测，2物理混合通过混合季节性温跃层以下的无机营养物，为浮游植物生长创造了有利的环境，使植物细胞在光照良好的表面沃茨中更有利地生长。一种可能性是混合是由于内潮的产生和传播3 -6。本研究进行了检测和观察的性质内潮在凯尔特海陆架断裂。我们在这里表明，内潮，在接近200米的轮廓春潮产生7 -9，同时传播到大陆架和海洋中的扭曲前进波，当这种情况发生时，营养物质混合向海面。
The shelf-break region of the Celtic Sea (north of the Bay of Biscay) is characterized by a reduced sea-surface temperature (∼1 °C) throughout the summer months1. The cool region stretches for ∼300 km along the slopes and exhibits enhanced levels of surface phytoplankton abundance. It has been postulated2that physical mixing creates this favourable environment for phytoplankton growth by mixing inorganic nutrients from below the seasonal thermocline, allowing the plant cells to grow more favourably in the well-illuminated surface waters. One possibility is that the mixing is due to the production and propagation of internal tides3–6. The present study was undertaken to detect and observe the nature of the internal tide at the Celtic Sea shelf break. We show here that internal tides, generated at spring tides close to the 200-m contour7–9, propagate simultaneously both on shelf and into the ocean as distorted progressive waves, and when this happens, nutrients are mixed towards the sea surface.