On the eddy statistics in a ring-rich area: A hypothesis of bimodal structure
On the eddy statistics in a ring-rich area: A hypothesis of bimodal structure
复制标题
富含环区域的涡旋统计：双峰结构的假设
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
T. Rossby
中科院分区：
文献类型：
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作者：
Kuh Kim;T. Rossby
在构造涡度场统计量时引入了一个假设，它把墨西哥湾流环作为一个独立的异常特征与中尺度涡度场区分开来。对纽约市和百慕大之间去除环的XBT剖面的分析表明，从百慕大和r.rn.s. 15°C等温线的位移为50 m或更小。尽管靠近墨西哥湾流，但斜压振幅并不比更南部的斜压振幅大。涡流场的时间和空间尺度似乎也非常类似于海洋中部的尺度。Dantzler（1977）提出的涡动位能向北迅速增加的原因是环的地理分布。
A hypothesis is introduced in constructing the statistics of an eddy field, which distinguishes Gulf Stream rings as a separate anomalous feature from the rnesoscale eddy field. Analysis of XBT sections between New York City and Bermuda with rings removed indicates that the therrnocline deepens toward the Gulf Stream from Bermuda and the r.rn.s. displacement of the 15°C isotherm is 50 m or less. Despite proximity to the Gulf Stream this baroclinic amplitude is not larger than those found farther south. Temporal and spatial scales of the eddy field appear to be also very similar to mid-ocean scales. Geographical distribution of rings is suggested as the cause of the rapid northward increase of eddy potential energy found by Dantzler (1977).