A plume of steam flows upward from Bogoslof volcano, a partially submerged volcano that created giant underwater bubbles when it erupted in 2017. (Credit:
Dave Withrow, Alaska Volcano Observatory)

(Inside Science) — As a geophysicist at the Alaska Volcano Observatory, John Lyons spends much of his days trying to decipher the music of volcanic eruptions. Sensitive microphones scattered across the Aleutian Arc — a chain of over 80 volcanoes that sweeps westward from the Alaskan peninsula —