Modification of a Kenai eddy along the Alaskan Stream
Modification of a Kenai eddy along the Alaskan Stream
复制标题
阿拉斯加溪沿岸基奈涡流的变化
DOI：
10.1029/2011jc007506
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
and E. Oka
中科院分区：
文献类型：
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作者：
Ueno;H.;I. Yasuda;S. Itoh;H. Onishi;Y. Hiroe;T. Suga;and E. Oka
通过分析卫星高度计数据以及来自船上和 Argo 浮标观测的水文数据，对基奈涡流进行了研究。该涡流于 2006 年 12 月在基奈半岛以南形成，并沿着阿拉斯加溪向西南传播。 2007年1月，涡流保持水平均匀的温暖核心水。2007年冬末，该核心水从顶部冷却，在26.5σθ附近形成次表面温度最大值。两年后的 2009 年夏季，在涡流核心中再次观察到温暖的低溶解氧 (低 DO) 水，其特征是最高温度约为 26.5σθ，这很可能是原始核心水的残余物。与此同时，涡流核心中发生了寒冷和高溶解氧水的侵入，表明核心水的强烈改变正在进行中。 2009年夏天之后，核心水通过与另一个涡流的相互作用而完全改变。
A Kenai eddy was studied through analyses of satellite altimeter data and hydrographic data from shipboard and Argo float observations. This eddy formed in December 2006 south of the Kenai Peninsula and propagated southwestward along the Alaskan Stream. The eddy held horizontally uniform warm core water in January 2007. In late winter 2007, this core water was cooled from the top and a subsurface temperature maximum was formed around 26.5σθ. Two years later in summer 2009, warm and low‐dissolved‐oxygen (low‐DO) water characterized by a temperature maximum around 26.5σθwas observed again in the eddy core and was likely the remnant of original core water. At the same time, cold and high‐DO water intrusions occurred in the eddy core, suggesting that strong modification of core water was ongoing. After summer 2009, the core water was fully changed through interaction with another eddy.