First hydrographic evidence of the southeast Madagascar upwelling cell
First hydrographic evidence of the southeast Madagascar upwelling cell
复制标题
马达加斯加东南部上升流单元的第一个水文学证据
DOI：
--
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
H. V. Aken
中科院分区：
文献类型：
--
作者：
E. Machu;J. Lutjeharms;A. Webb;H. V. Aken
2001年3月，在Agulhas Current Sources Experiment（ACSEX-2）巡航调查期间，在马达加斯加南部进行了水文剖面测量。东马达加斯加海流（East Madagascar Current，简称EMC），可能是阿古拉斯海流的源头之一，曾四次穿越马达加斯加海脊。位于马达加斯加东南端（EMC近岸）的上升流单元在ACSEX-2期间首次在水文学上得到强调。马达加斯加南部的EMC的行为进行了研究，使用水文数据和卫星图像。在马达加斯加的东南端，EMC向西转向，大陆架形状的巨大变化有利于嵌入EMC核心和海岸之间的气旋涡流的发展。上升流则与该涡旋的存在和有利的风力条件相关联。
Hydrographic sections were conducted south of Madagascar during the Agulhas Current Sources EXperiment (ACSEX‐2) cruise survey in March 2001. The East Madagascar Current (EMC), presumably one of the sources of the Agulhas Current, was crossed four times over the Madagascar ridge. The upwelling cell, at the southeastern tip of Madagascar (inshore of the EMC), was hydrographically highlighted for the very first time during ACSEX‐2. The behavior of the EMC south of Madagascar is studied using both hydrographic data and satellite imagery. At the southeastern end of Madagascar, the EMC turns westward and the dramatic change in the shape of the shelf favours the development of a cyclonic eddy that is embedded between the EMC core and the coast. The upwelling is then associated to the presence of this eddy and to wind favorable conditions.