Blocking of the Kuroshio large meander by baroclinic interaction with the Izu Ridge
Blocking of the Kuroshio large meander by baroclinic interaction with the Izu Ridge
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DOI：
10.1175/jpo2945.1
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发表时间：
2006-11
影响因子：
3.5
通讯作者：
H. Mitsudera;B. Taguchi;T. Waseda;Y. Yoshikawa
中科院分区：
文献类型：
--
作者：
H. Mitsudera;B. Taguchi;T. Waseda;Y. Yoshikawa
本文讨论了伊豆洋脊在阻挡黑潮大弯曲向东跨越洋脊传播中的作用。结果表明，斜底与斜压性相结合的黑潮流是重要的阻塞大曲流。当大曲流撞击到伊豆脊的西坡时，在其上产生一个气旋性扭矩，即气旋性扭矩在大曲流之前形成，导致大曲流在伊豆脊上游被阻塞和放大。脊上黑潮的斜压性是由大弯曲遇到脊时产生的斜压地形Rossby波引起的。
This paper discusses the role of the Izu Ridge in blocking the Kuroshio large meander from propagating eastward across the ridge. It is shown that a combination of the sloping bottom with baroclinicity in the Kuroshio flow is important for blocking of the large meander. It produces a cyclonic torque over the western slope of the ridge when the large meander impinges upon it. That is, the cyclonic torque is formed ahead of the large meander, which results in blocking and amplification of the meander upstream of the Izu Ridge. The baroclinicity of the Kuroshio over the ridge is caused by baroclinic topographic Rossby waves generated when the large meander encounters the ridge.