Transformation of the Labrador Sea Water in the subpolar North Atlantic
Transformation of the Labrador Sea Water in the subpolar North Atlantic
复制标题
北大西洋副极地拉布拉多海水的转变
DOI：
10.1029/2007gl031812
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发表时间：
2007
影响因子：
5.2
通讯作者：
M. Bersch
中科院分区：
文献类型：
--
作者：
I. Yashayaev;H. V. van Aken;N. P. Holliday;M. Bersch
本文描述了拉布拉多海水（LSW）的两类温盐特性的发展、扩展和衰减。在发展阶段，一个特定的LSW类反复混合的冬季对流在拉布拉多海变得更冷，更密，更厚，更深。一旦对流减弱，LSW类变得孤立于上层，并开始衰减，迅速失去其体积，同时保持相同的密度，由于等密度混合与邻近的温暖盐水中间沃茨。在其他盆地中也看到了类似的温度、盐度和密度模式，但时滞不同，从Irminger海的大约两年到北方冰岛盆地和Rockall海槽地区的十年不等。LSW对其他北大西洋水团的温盐特性的影响也进行了讨论。
Development, spreading and decay of the thermohaline properties of two Labrador Sea Water (LSW) classes are described. During the development phase, a specific LSW class repeatedly mixed by winter convection in the Labrador Sea becomes colder, denser, thicker and deeper. Once convection weakens, the LSW class becomes isolated from the upper layer and starts to decay, rapidly losing its volume while retaining the same density due to isopycnal mixing with the neighbouring warm saline intermediate waters. A similar pattern in temperature, salinity and density is seen in the other basins with different time lags from about two years in the Irminger Sea to ten years in the northern Iceland Basin and Rockall Trough regions. The influence of LSW on the thermohaline properties of other North Atlantic water masses is also discussed.