地理漫步·世界地理英语30篇（1）

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黑潮与日本远洋渔业

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