Seismic scream precedes volcanic eruptions

The transcript describes the events leading up to a 2009 volcanic eruption. It details a series of tremors occurring two kilometers below the crater, which escalated into a swarm of 1,600 drumbeat earthquakes in the 10 hours before the eruption. The frequency and occurrence of these tremors increased, culminating in a continuous scream that peaked 30 seconds before the eruption.

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