The natural history of the Hawaiian island chain clearly shows the movement of the Pacific plate over a fixed plume.

夏威夷岛链的自然历史清楚地显示了太平洋板块在一个固定的羽流上的运动。

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The explosion and fire at Chernobyl sent parts of the reactor core high into the atmosphere in a plume that drifted over Ukraine, Belarus, Russia and western Europe.

发生在切尔诺比利的爆炸和大火将反应堆的内核炸到了高空中，陷入气流中并漂浮到乌克兰，白俄罗斯，俄国和西欧地区。

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On this day, skies are clear northwest of Baghdad. A thick plume of dust, however, hovers over the Iraq-Iran border, and obscures the coastline of the Persian Gulf.

此时巴格达西北方向的天空已经转晴，但两伊边境地区和波斯湾的海岸线都笼罩在了厚厚的沙尘之下。

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Their Dornier 288 plane tracked the edge of the plume over East Anglia and the North Sea, and towards the Dutch coastline.

BBC: Flight ban 'not over-reacting' say Wiltshire scientists

Models by the National Oceanographic and Atmospheric Administration project that the plume will head over the Pacific for a few days before gradually dissipating into the sea.

FORBES: Tracking Radioactive Drift from Fukushima Nuclear Plant

The plume moved south and east over the 12-hour period of 0600 UTC to 1800 UTC on March 15.

FORBES: Tracking Radioactive Drift from Fukushima Nuclear Plant