Listen to Japan’s massive quake.

Ever wonder what the fourth-largest recorded earthquake since 1900 sounds like? The Laboratory of Applied Bioacoustics (LAB) has posted the eerie sound online. The Japan Agency for Marine-Earth Science and Technology (JAMSTEC),  a network of underground observatories more than a thousand meters below sea level, made the chilling recording as the quake struck.

According to Science Daily, the sounds of Japan’s 9.0-magnitude quake “have been accelerated 16 times so that they can be audible to human ears.” The red and yellow colors on the spectogram represent the most intense parts of the quake. You can also listen to the first and second aftershock on the LIDO site.

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Miyake footage