The massive volcanic blast in the Pacific last year was felt 18,000km away on the other side of the world, on the floor of the Atlantic Ocean.
The eruption of Hunga-Tonga Hunga-Ha’apai on 15 January 2022 sent pressure waves through Earth’s atmosphere that connected with the sea surface and triggered 50 highly sensitive seismometers placed 5,000m below on the seabed.
Hunga-Tonga produced the highest ash cloud ever recorded, sending rocky particles more than halfway to space.
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