地理漫步·世界地理英语30篇（4）
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The Kuroshio Extension: Western Boundary Current Instability and Mesoscale Eddy Fields
黑潮延伸体：西边界流不稳定性与中尺度涡旋场
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This energetic current separates from Japan’s east coast and meanders across the North Pacific Gyre.这股活跃洋流从日本东海岸分离，蜿蜒穿越北太平洋环流。
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Instabilities generate warm-core and cold-core eddies that persist for months and travel hundreds of kilometers.不稳定性产生暖核与冷核涡旋，可持续数月并移动数百公里。
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Eddy kinetic energy peaks where the current narrows and accelerates over seafloor ridges near the Izu-Ogasawara Arc.当洋流在伊豆-小笠原弧附近的海岭上变窄加速时，涡旋动能达峰值。
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Satellite altimetry reveals how eddy trains modulate heat exchange between ocean and atmosphere regionally.卫星高度计揭示了涡旋列如何区域性调制海洋与大气间的热量交换。
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Zooplankton biomass concentrates along eddy edges where nutrient-rich waters upwell near convergence zones.浮游动物生物量集中在涡旋边缘，即营养丰富的海水在辐合区附近上升之处。
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Fish larvae use eddy circulation to disperse across otherwise hostile open-ocean environments.鱼卵和仔鱼借助涡旋环流，在原本不利的开阔大洋环境中扩散。
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Thermohaline structure inside eddies differs sharply from surrounding water, altering acoustic propagation for marine surveys.涡旋内部的温盐结构与周围海水差异显著，从而改变海洋勘测中的声波传播。
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Chlorophyll-a anomalies trace phytoplankton blooms triggered by eddy-induced vertical mixing mechanisms.叶绿素a异常反映了涡旋引发的垂向混合机制所触发的浮游植物水华。
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Surface drifters deployed in the extension show path divergence reflecting underlying eddy vorticity fields.在延伸段布放的表层漂流浮标显示路径分叉，反映出底层涡旋涡度场。
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Model simulations confirm that eddy heat transport contributes significantly to interannual sea-surface temperature variability east of Japan.模型模拟证实，涡旋热输送对日本以东海表温度的年际变率贡献显著。