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首页> 外文期刊>Journal of oceanography >Variations of the Kuroshio Axis South of Kyushu in Relation to the Large Meander of the Kuroshio
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Variations of the Kuroshio Axis South of Kyushu in Relation to the Large Meander of the Kuroshio

机译：九州南部黑潮轴的变化与黑潮大曲折的关系

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摘要

The characteristics of the Kuroshio axis south of Kyushu, which meanders almost sinusoidally, are clarified in relation to the large meander of the Kuroshio by analyzing water temperature data during 1961–95 and sea level during 1984–95. The shape of the Kuroshio axis south of Kyushu is classified into three categories of small, medium, and large amplitude of meander. The small amplitude category occupies more than a half of the large-meander (LM) period, while the medium amplitude category takes up more than a half of the non-large-meander (NLM) period. Therefore, the amplitude and, in turn, the curvature of the Kuroshio axis is smaller on average during the LM period than the NLM period. The mean Kuroshio axis during the LM period is located farther north at every longitude south of Kyushu than during the NLM period, with a slight difference west of the Tokara Islands and a large difference to the east. A northward shift of the Kuroshio axis in particular east of the Tokara Islands induces small amplitude and curvature of the meandering shape during the LM period. During the NLM period, the meandering shape and position south of Kyushu change little with Kuroshio volume transport. In the LM formation stage, the variation of the Kuroshio axis is small west of the Tokara Islands but large to the east due to a small meander of the Kuroshio. In the LM decay stage, the Kuroshio meanders greatly south of Kyushu and is located stably near the coast southeast of Kyushu.
机译：通过分析1961-95年的水温数据和1984-95年的海平面数据，阐明了九州以南的黑潮轴线几乎呈正弦形弯曲的特征。九州以南的黑潮轴的形状分为小，中，大曲折三类。小幅度类别占据了大弯道（LM）周期的一半以上，而中幅度类别占据了非大弯道（NLM）周期的一半以上。因此，在LM周期内，黑潮轴的振幅和曲率平均小于NLM周期。 LM时期的平均黑潮轴比NLM时期的九州以南每经度更北，在Tokara群岛以西略有不同，在东部则有很大的差异。黑土轴线的北移，特别是在托卡拉群岛以东，导致LM时期曲折形状的幅度和曲率较小。在NLM时期，九州以南的曲折形状和位置随黑潮体积运输而变化不大。在LM形成阶段，黑潮轴的变化在Tokara群岛以西较小，但由于黑潮的曲折较小，所以向东较大。在LM衰变阶段，黑潮在九州以南蜿蜒而行，并且稳定地位于九州东南海岸附近。

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