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Spectrogram of Mammoth Mountain earthquake swarm, November 28, 2024

By California Volcano Observatory
A row of 5 spectrograms show time on the horizontal and frequency on the vertical. Earthquakes are visible as bright colors.
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Detailed Description

These spectrograms of seismic stations near Long Valley's Mammoth Mountain show the brightly-colored punctuated spasms of small earthquakes happening within a 10 minute period.

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Public Domain.

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