in the water, and a large amount of trapped infill (subglacial and proglacial sediment) that was trapped under the glacier and had already been loosened by the earthquake was released as an almost immediate and many times larger second slide. The debris released was estimated by the study as being between 5 and 10 times the volume of the initial rockfall, a bulking ratio comparable with that of other events such as the September 2002 Kolka-Karmadon rock ice slide (estimated ratio between 5 and 10), the November 1987 Parraguirre landslide (est. ratio 2.5) and the May 1970 Huascarán landslide (est. ratio 4). This additional volume would explain the large changes in the underwater shape of the sea floor in the bay, and the additional energy of waves, especially at the western end of the bay. The paper's authors suggest that core samples may show a deep layer of reworked sediment if this model is correct. See also Icy Bay (Alaska) for a very similar event in 2015 List of earthquakes in 1958 List of earthquakes in Alaska List of earthquakes in the United States List of tsunamis Lituya Mountain References Notes Further reading External links Gary Griggs, "Our Ocean Backyard: Tsunami rocked Alaska's Lituya Bay in 1958", Santa Cruz Sentinel, April 9, 2011 Dave Kiffer, "Surviving the Biggest Wave Ever 50 Years Ago, 1,700 Foot Wave Devastated Lituya Bay", SitNews, July 8, 2008. Sonny and Howard Ulrich, Video retelling of their surviving the event & simulated megatsunami Horizon, BBC, first broadcast October 12, 2000. (Mega-tsunami: Wave of Destruction) Lituya Bay earthquake and megatsunami Lituya Bay earthquake and megatsunami Lituya Floods in the United States Tsunamis in the United States Lituya Bay megatsunami Lituya Bay earthquake and megatsunami Lituya Bay earthquake and megatsunami Lituya Bay earthquake and megatsunami Lituya Bay earthquake and megatsunami Megatsunamis pl:Megatsunami w Zatoce Lituya