ClearLake_20230626-2050.png

By California Volcano Observatory June 26, 2023

A spectrogram made up of five bars dark blue background, each overlain by a black-and-white helicorder trace. About halfway across each bar, a series of small, regularly-spaced arrowheads appear on the helicorder, with bright aqua stripes appearing below each in the spectrograms. The stripes are brightest between 5 and 10 Hz.

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Detailed Description

Spectrogram and helicorder signals of "Noon Booms" recorded at California's Clear Lake Volcanic Field on 26 June 2023.

Sources/Usage

Public Domain.