On 15 January, the eruption of a submarine volcano in the Tonga archipelago destroyed 90% of the uninhabited island of Hunga Tonga Ha’apai and formed an ash plume half the size of France. It also generated an atmospheric shock wave that circled the Earth several times, and, more classically, seismic waves recorded by monitoring stations around the world.
Click here for original story, Tonga Islands: A seismic algorithm reveals the magnitude of the January 2022 eruption
Source: Phys.org