冰岛科学家如何用科技监听地下火山的呼吸
On the surface, Iceland looks like a frozen wilderness of glaciers and black lava fields. But underground, a restless pulse of molten rock stirs constantly. Scientists here are engaged in a quiet race: to measure and predict the movements of more than 30 active volcanic systems that sit beneath the island's ice.
Their main tool is a dense network of seismometers. These sensitive devices pick up tiny tremors — some too subtle for humans to feel — that signal magma pushing its way upward through cracks in the Earth's crust. When dozens of small earthquakes cluster beneath a single volcano within hours, researchers know something is brewing.
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