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"Noon Boom" acoustic seismic signals recorded in the Clear Lake Volcanic Field

By California Volcano Observatory
A series of seismograms with lines showing the recorded motion of the ground at these sites in light gray. The measurements are ordered by distance from the source of the noise, with the closest at the bottom and furthest at the top. Darker, slanted lines show the speed that sound would travel in the air from that source to each of the seismometers, one for each burst, that line up with when the ground shakes. This example shows data from the Clear Lake Volcanic Field on 26 June 2023.
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Detailed Description

A series of seismograms shows the geographical progression of acoustic signals caused by munitions detonations at Nevada's Hawthorne Army Depot (26 June 2023).

Sources/Usage

Public Domain.