地理漫步·世界地理英语30篇（6）
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Coastal Upwelling Zones: Where Deep Currents Feed Rich Marine Ecosystems
上升流海岸带：深层洋流滋养富饶海洋生态
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Prevailing winds push surface water offshore, allowing cold, nutrient-rich deep water to rise along western continental margins.盛行风将表层海水吹离海岸，使富含营养的寒冷深层海水沿大陆西缘上升。
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Peru’s Humboldt Current supports one of Earth’s most productive fisheries through year-round upwelling.秘鲁洪堡寒流通过全年上涌，支撑着地球上生产力最高的渔场之一。
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Upwelling zones cover less than 1% of ocean area but generate over 20% of global fish catch.上升流区面积不足海洋总面积的1%，却贡献了全球逾20%的渔获量。
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Phytoplankton blooms here fuel food webs from krill to blue whales within narrow coastal bands.此处的浮游植物大量繁殖，为从磷虾到蓝鲸的食物网提供能量，范围局限于狭窄的近岸带。
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El Niño disrupts upwelling by weakening trade winds, collapsing anchovy stocks off South America.厄尔尼诺现象削弱信风，扰乱上升流，导致南美洲沿岸鳀鱼资源崩溃。
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Sediment plumes visible from space mark upwelling intensity and nutrient dispersion patterns.从太空可见的沉积物羽流标志着上升流强度及营养盐扩散模式。
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Marine fog forms where cold upwelled water meets warmer atmospheric layers near shorelines.当寒冷的上升流水体与近岸较暖的大气层相遇时，便形成海雾。
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Coastal cities like San Francisco rely on upwelling-driven productivity for tourism and seafood economies.旧金山等沿海城市依赖上升流驱动的海洋生产力，支撑其旅游业和海产品经济。
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Oxygen minimum zones deepen where upwelling fuels bacterial decomposition of sinking organic matter.上升流促进沉降有机物的细菌分解，导致最低含氧带加深。
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Geographers correlate seabed topography, wind regimes, and satellite chlorophyll data to forecast upwelling variability.地理学家结合海底地形、风场和卫星叶绿素数据，预测上升流变化。