地理漫步·世界地理英语30篇（1）
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Kuroshio Current and Japanese Pelagic Fisheries
黑潮与日本远洋渔业
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The Kuroshio Current flows northward along Japan’s Pacific coast, transporting warm, nutrient-poor tropical water.
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Where it meanders offshore, cold, nutrient-rich water rises near the Izu-Ogasawara Ridge to support plankton blooms.
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These upwelling zones attract sardines, mackerel, and skipjack tuna, forming the backbone of Japan’s pelagic catch.
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Fishermen track the Kuroshio’s seasonal shifts using satellite sea-surface temperature data and buoy networks.
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The current’s western boundary intensifies eddy formation, creating temporary feeding hotspots that migrate yearly.
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Overfishing pressure has increased as warming pushes species like Pacific bluefin tuna farther north into new zones.
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Coastal ports such as Kushiro rely on consistent Kuroshio-influenced currents to predict fish aggregation timing.
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Marine heatwaves linked to Kuroshio anomalies have recently reduced anchovy spawning success in the East China Sea.
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Japan’s exclusive economic zone extends 200 nautical miles, but stock migration crosses jurisdictional boundaries regularly.
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Fisheries scientists now model Kuroshio–Oyashio confluence dynamics to forecast annual catch potential for key species.