PerspectiveGeophysics

Seismicity from the deep magma system

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Science  15 May 2020:
Vol. 368, Issue 6492, pp. 708-709
DOI: 10.1126/science.abc2452

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Summary

A systematic scan of seismic waveform archives on the Island of Hawai'i has revealed subtle but persistent near-periodic pulses originating within the deep magma plumbing system of Mauna Kea, a dormant volcano that last erupted ∼4500 years ago. On page 775 of this issue, Wech et al. (1) report the detection of over a million of the deep (22 to 25 km below sea level) long-period seismic events, which have been occurring continuously and repetitively, often with precise regularity (every ∼7 to 12 min), for at least 18 years. This discovery offers new views into the origin of this mysterious type of deep volcanic seismicity.

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