台风对黑潮大弯曲影响的观测证据
Impacts of Typhoons on the Kuroshio Large Meander: Observation Evidences
摘要：
利用巡航资料、Argo剖面资料和卫星遥感资料，对2004年夏季黑潮大弯曲的形成进行了研究。验证了气旋性涡旋对大弯曲的贡献。此外，还研究了台风对黑潮弯曲的影响。7月29日至8月4日，台风搅动海洋，使深水上涌，增强了已存在的气旋性涡旋，使黑潮立即发生剧烈弯曲。此外，2004年6月的意外台风也促成了托卡拉海峡的初始弯曲。结果表明，黑潮路径的曲折机制可能是通过台风-涡旋-黑潮相互作用实现的。认为伴随气旋性涡旋的台风对黑潮的弯曲起着重要作用。这将提供一个更全面的了解西边界流的动力学，如黑潮和湾流，并将在涡分辨率模式有用。
英文摘要：
The formation of the Kuroshio large meander in summer 2004 was investigated by using the cruise data, Argo profiles data, and satellite remote sensing data. We validated the point that cyclonic eddy contributes to the large meander. Besides, the impacts of typhoons on Kuroshio meanders were studied. From 29 July to 4 August, the typhoons stirred the ocean and upwelled the deep water, which enhanced the existed cyclonic eddy, and immediately made a drastic meander of the Kuroshio. Moreover, the unexpected typhoons in June 2004 also contributed to the initial meander at Tokara Strait. The result suggests an alternative meander mechanism of Kuroshio path via typhoon-eddy-Kuroshio interactions. It is argued that typhoons accompanied with cyclonic eddies, might play crucial roles in meanders of the Kuroshio. This will provide a more comprehensive understanding of the dynamics of the west boundary flows like the Kuroshio and the Gulf Stream, and will be useful in eddy-resolution models.
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