On the waters upstream of Nares Strait, Arctic Ocean, from 1991 to 2012
On the waters upstream of Nares Strait, Arctic Ocean, from 1991 to 2012
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DOI：
10.1016/j.csr.2013.11.025
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发表时间：
2014-02-01
影响因子：
2.3
通讯作者：
Schlosser, Peter
中科院分区：
文献类型：
--
作者：
Jackson, Jennifer M.;Lique, Camille;Schlosser, Peter
林肯海是一个分叉点，来自加拿大和欧亚盆地的沃茨在这里流向纳雷斯或弗拉姆海峡。控制在林肯海及其大陆架发现哪些沃茨的机制尚不清楚。利用传导性-温度-深度（CID：来自水文和冰系剖面仪调查）、营养物和系泊数据以及DRAKKAR全球3-0耦合海洋/海冰模型，从1991年到2012年对林肯海进行了检查。虽然在北埃尔斯米尔和北格陵兰大陆架上都观察到太平洋和大西洋沃茨。北格陵兰大陆架的大西洋海水较浅。因此，在125米以上的深度，北格陵兰大陆架的海水比北埃尔斯米尔大陆架的海水更温暖、更咸。1992、1993、1996、2005和2012年，在加拿大海盆的北埃尔斯米尔大陆架沃茨上发现了三种不同的水类型，2003、2004和2008年，在加拿大和欧亚海盆的沃茨上发现了三种不同的水类型，1991年，在表面混合层以下发现了没有温度最低值或最高值的沃茨，2006年、2009年和2010年。在大陆坡观测到垂直平流速度为1x 10（-4）ms（-1）的混合，这种混合可能导致最高温度消失。模式结果表明，在北埃尔斯米尔大陆架的电流弱（小于10 cm s（-1）），斜压，并指向远离纳雷斯海峡，而在北格陵兰大陆架的电流较强（小于15 cm s（-1）），并主要指向纳雷斯海峡。CTD，系泊，和模型的结果表明，水平流到纳雷斯海峡主要是从北格陵兰陆架，而在北埃尔斯米尔陆架的水向西平流。(C)2013爱思唯尔有限公司保留所有权利。
The Lincoln Sea is a bifurcation point, where waters from the Canadian and Eurasian Basins flow to Nares or Fram Strait. Mechanisms that control which waters are found in the Lincoln Sea, and on its continental shelves, are unknown. Using conductivity-temperature-depth (CID: from hydrographic and ice-tethered profiler surveys), nutrient, and mooring data with the DRAKKAR global 3-0 coupled ocean/sea-ice model, the Lincoln Sea was examined from 1991 to 2012. Although both Pacific and Atlantic waters were observed on the North Ellesmere and North Greenland shelves. Atlantic water was shallower on the North Greenland shelf. Thus, deeper than 125 m, water was warmer and saltier on the North Greenland shelf than the North Ellesmere shelf. Three different water types were identified on the North Ellesmere shelf waters from the Canadian Basin were observed 1992, 1993, 1996, 2005, and 2012, waters from both the Canadian and Eurasian Basins were observed in 2003, 2004, and 2008, and waters with no temperature minima or maxima below the surface mixed layer were observed in 1991, 2006, 2009, and 2010. Mixing with vertical advection speeds of 1 x 10(-4) ms(-1) were observed on the continental slope and this mixing could cause the disappearance of the temperature maxima. Model results suggest that currents on the North Ellesmere shelf were weak (less than 10 cm s(-1)), baroclinic, and directed away from Nares Strait while currents on the North Greenland shelf were stronger (less than 15 cm s(-1)), and primarily directed towards Nares Strait. CTD, mooring, and model results suggest that the water advected to Nares Strait is primarily from the North Greenland shelf while water on the North Ellesmere shelf is advected westward. (C) 2013 Elsevier Ltd. All rights reserved.