In this explainer, we look at what a mega tsunami is, what the study has found, and which areas are most at risk. Here’s a look: What is a mega - tsunami ? Mega - tsunamis are not like regular tsunamis, which usually produce waves only a few feet high. These waves can reach hundreds of feet in height. False-color Landsat 8 image of Lituya Bay, 2020. The damaged trimline is still imprinted in the forest. The lighter green areas along the shore indicate places where forests are younger than older trees (darker areas) that were not affected by the tsunami. The 1958 Lituya Bay earthquake occurred on July 9, 1958, at 22:15:58 PST with a moment magnitude of 7.8 to 8.3 and a maximum Mercalli intensity of XI (Extreme). [4] The strike-slip earthquake took place on the Fairweather Fault and ... Scientists are warning that a 1,000-foot-tall “ mega tsunami ” could potentially wipe a large chunk of America off the map – if a strong enough earthquake hits a specific active fault line over... Unlike an ordinary tsunami, a megatsunami is characterized by extremely large wave heights , often hundreds of meters, and is typically caused by massive underwater displacements like large...
