What Made the Volcanic Eruption in the Pacific So Destructive?南太平洋火山喷发为何破坏力大？

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Most of the world’s volcanism takes place underwater. This is not just because most of the world’s surface is underwater. It is because plate tectonics1 has placed the seams where the Earth’s crust is created and destroyed： in the ocean’s depths. The volcanic activity associated with creation is slow and steady， and it takes place a long way beneath the waves， all of which makes it very benign. That which accompanies the destruction is a lot more troublesome.

世界上大部分火山活动都发生在海底。（剩余5416字）

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