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Photo looking down the Fairweather Fault Trench at the head of Lituya Bay. The wave damaged areas along the edges of the bay. The giant wave runup of 1,720 feet (524 m.) at the head of the Bay and the subsequent huge wave along the main body of Lituya Bay which occurred on July 9, 1958, were caused primarily by an enormous subaerial rockfall into Gilbert Inlet at the head of Lituya Bay, triggered by dynamic earthquake ground motions along the Fairweather Fault. History and science books consider it to be the largest tsunami of modern times. It must have risen several hundred feet. Wave damage areas along the shorelines of Lituya Bay, viewed from the south. This caused a massive wave, reaching in some points to a height of 1,720 feet. Differently-aged vegetation is visible on the ridge separating Lituya Glacier from the main part of the bay – looking north from the head of the bay, Lituya Glacier to the right. It is marked on the map above in red. The Lituya Glacier and North Crillon Glacier have scoured portions of the Fairweather Trench in the area of Lituya Bay. The actual crest of the wave would have been lower. The effect of the tsunami still visible in 2010. All of these waves were significant in size, but shoreline evidence for all of them was removed by the 1958 wave. The largest tsunami ever recorded on Earth occurred on July 9, 1958. Accessed November 20, 2020. Photo by D.J. The glacier had risen in the air and moved forward so it was in sight. A fishing boat anchored in the cove at lower left was carried over the spit in the foreground; a boat under way near the entrance was sunk; and a third boat, anchored near the lower right, rode out the wave. 2018 Gulf of Alaska earthquake On January 23, 2018, at 00:31 AKST, an earthquake occurred in the Gulf of Alaska near Kodiak Island. On the night of July 9, 1958, an earthquake along the Fairweather Fault in Alaska loosened about 40 million cubic yards of rock about 3,000 feet above the northeastern shore of Lituya Bay. On October 27, 1936, a megatsunami occurred in Lituya Bay in Alaska with a maximum run-up height of 490 feet (149 m) in Crillon Inlet at the head of the bay. The opposite valley wall on the left side of Gilbert Inlet received the full force of the big wave, stripping it of soil and trees. – 10.

Miller, United States Geological Survey. Megatsunami yleisyys 1958 Lituya Bay Megatsunami Simulation (Short) - YouTub . Lituya Bay was in the area of XI intensity. A 1958 landslide in the region resulted in what's often referred to as the tallest tsunami wave in modern times. Miller, United States Geological Survey. The large earth quake triggered a land slide of 30 million cubic meters of rock down the mountain and into the bay. Miller, United States Geological Survey. There were three fishing boats anchored near the entrance of Lituya Bay on the day the giant wave … light to sound live performance. The rocks fell from an elevation of about 3000 feet (914 meters). Lituya Bay a few weeks after the 1958 tsunami. At the head of Lituya Bay, Alaska, on July 10, 1958, an earthquake of magnitude 7.3 triggered a gigantic rock fall, later estimated as measuring forty million cubic yards, at the headland of the bay and a resultant 1,700-foot-high tsunami wave because of the water that was displaced. This is a Landsat Geocover image of Lituya Bay produced with Landsat data collected by NASA about forty years after the tsunami. I can’t help it if they don’t believe me. Its super wave reached 1720 feet (524 meters) and destroyed parts of Lituya Bay in Southeast Alaska. Obviously, megatsunamis will happen again, and possibly without warning. depth of about 720 feet (219 meters), but a sill of only 32 feet (9.7 meters) in depth separates it from the Gulf of Alaska between La Chaussee Spit and Harbor Point. The area was sparsely inhabited, but there were reportedly 5 casualties who were onboard a boat that was in the path of the megatsunami.. This damaged area is shown in yellow on the map above. 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