Surface exchange between the Weddell and Scotia Seas
Surface exchange between the Weddell and Scotia Seas
复制标题
威德尔海和斯科舍海之间的海面交换
DOI：
10.1002/2013gl058114
复制
发表时间：
2013
影响因子：
5.2
通讯作者：
Madeleine K. Youngs
中科院分区：
文献类型：
--
作者：
A. Thompson;Madeleine K. Youngs
在德雷克海峡内，南极环极流（ACC）的南侧承载着深水的通风、南极陆架水的注入以及西、东边界流的相互作用。这种交流是通过2012年1月在威德尔海西北部释放的40只水面漂浮物的轨迹来探索的。漂流者详细描述了南极半岛东部和斯科舍海叶绿素含量升高的地点之间的拉格朗日运输路径。ACC锋面流，特别是南部ACC锋面，作为漂浮物的动力运输屏障，影响了表面叶绿素分布，表明ACC锋面在斯科舍海分割威德尔源水域。南斯科舍海和北威德尔海表层叶绿素的年际波动变化。这表明，斯科舍海的生态系统动态与从南极半岛尖端注入的水的性质有关，并对威德尔环流的变化作出反应。
Within Drake Passage, the southern flank of the Antarctic Circumpolar Current (ACC) hosts the ventilation of deep water, the injection of Antarctic shelf waters and interactions between westward and eastward boundary currents. This exchange is explored through the trajectories of forty surface drifters released in January 2012 in the northwestern Weddell Sea. The drifters detail Lagrangian transport pathways between the eastern Antarctic Peninsula and sites of elevated chlorophyll in the Scotia Sea. ACC frontal currents, in particular the Southern ACC Front, act as dynamical transport barriers to the drifters and influence surface chlorophyll distributions, indicating that ACC fronts partition Weddell source waters in the Scotia Sea. Interannual fluctuations in surface chlorophyll in the south Scotia Sea and the northern Weddell Sea covary. This suggests that Scotia Sea ecosystem dynamics are linked to water properties injected from the tip of the Antarctic Peninsula and respond to Weddell Gyre circulation changes.