Source: wikibot/1977-tonga-earthquake
= 1977 Tonga earthquake
{wiki=1977_Tonga_earthquake}
The 1977 Tonga earthquake occurred on November 19, 1977, and was a significant seismic event that struck the region known as the Tonga Trench in the South Pacific. This area is known for its tectonic activity due to the subduction of the Pacific Plate beneath the Indo-Australian Plate. The earthquake had a moment magnitude of approximately 7.2 to 7.8, though estimates can vary.