On July 9, 1958, an earthquake with a magnitude of 8.3 on the Richter scale rocked a small inlet in Alaska called Lituya Bay. Miller, United States Geological Survey. The earthquake, measured at 7.9 on the M w scale, was approximately 280 kilometres southeast of Kodiak and happened at a depth of 25 kilometres. The wave then continued down the entire length of Lituya Bay, over La Chaussee Spit and into the Gulf of Alaska. 1958 Lituya Bay Tsunami Description. Images of the powerful 2011 Japanese tsunami sweeping along the Japanese coast shocked the world as it engulfed entire towns and coastal areas, reaching heights of up to an astonishing 133 feet (40.5 meters) However, that was dwarfed by a megatsunami that struck Lituya Bay, Alaska, on July 10, … The spur of land between Gilbert Inlet and Lituya Bay that received the full force of the wave. It hit the water with such force that it generated a humongous wave known as a megatsunami. Photo by D.J. The mountains were shaking something awful, with slide of rock and snow, but what I noticed mostly was the glacier, the north glacier, the one they call Lituya Glacier. People shake their heads when I tell them I saw it that night. It also caused a rockfall in Lituya Bay that generated a wave with a maximum height of 1,720 feet – the world’s largest recorded tsunami. It caused significant geologic changes in the region, including areas that experienced uplift and subsidence. The Landslide Blog (2008, July 9) Lituya Bay—50 Years On. 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. tumbled down a steep slope into the narrow inlet of Lituya Bay. After scrutinizing the bay’s geology and history for years, one scientist calculated giant waves happen there once every quarter century—a 1 in 9000 chance on any given day. Don J. Miller (1960), "Giant Waves at Lituya Bay, Alaska" Don Tocher (1960), "The Alaska Earthquake of July 10, 1958: Movement on the Fairweather Fault and Field Investigation of Southern Epicentral Region" Steven N. Ward and Simon Day (2010), "The 1958 Lituya Bay Landslide and Tsunami - A Tsunami Ball Approach" It seems to be solid, but it was jumping and shaking like crazy. There are no known survivors from this boat, and it was believed that there were two people on board. Trees and soil were stripped away to an elevation of 1720 feet (524 meters) above the surface of Lituya Bay. Miller, United States Geological Survey. The giant wave washed out trees to a maximum elevation of 1,720 feet (524 meters) at the entrance of Gilbert Inlet. 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. It is about seven miles long (11.3 kilometers) and up to two miles wide (3.2 kilometers). It caused significant geologic changes in the region, including areas that experienced uplift and subsidence. Biggest tsunami ever recorded was in Lituya Bay, Alaska, it’s height – astonishing 524 meters (1724 ft.) On July 9, 1958, an earthquake of magnitude 7.7 (on the Richter scale), caused 90 million tonnes of rock and ice to drop into the deep water at the head of Lituya Bay. The glacier had risen in the air and moved forward so it was in sight. Glacial scour has exploited the weak zone along the fault to produce a long linear trough known as the Fairweather Trench. It came after a powerful earthquake that measured 8.2 on the Richter scale triggerered a landslide of 30 million cubic meters of rock in the bay's inlet. About five megatsunamis are believed to have taken place in Alaska's Lituya Bay. The numbers are elevations (in feet) of the upper edge of the wave damage area and represent the approximate elevation of the wave as it traveled through the bay. This landslide created a local tsunami that washed away pretty much everything - soil and vegetation including trees - from elevations as high as 1720 feet above sea level. the T-shape of the bay. A full-grown Alaskan brown bear on the rocky slope looked the size of a mite. This damaged area is shown in yellow on the map above. Southeast Alaska Earthquake. The four eyewitnesses to the wave in Lituya Bay itself all survived and described it as … 221 likes. Accessed November 20, 2020. Extent and height of inundation by the giant wave generated in Lituya Bay on July 9, 1958 (modified graphic based on Miller's 1958 Survey and Captain Roberts' photogrammetry. MODELING THE 1958 LITUYA BAY MEGA-TSUNAMI Charles L. Mader Los Alamos National Laboratory Los Alamos, NM 87545 U.S.A. ABSTRACT Lituya Bay, Alaska is a T-Shaped bay… CONTRIBUTIONS TO GENERAL GEOLOGY GEOLOGICAL SURVEY PROFESSIONAL PAPER 354-C A timely account of the nature and possible causes of certain giant waves, with eyewitness reports of their destructive capacity UNITED STATES GOVERNMENT PRINTING OFFIC.E, WA:SHIN:GTON : 1960 This tree is located about seven miles (11.3 kilometers) from where the wave originated. The highest wave ever recorded occurred on July 9, 1958 in Lituya Bay, Alaska reaching a height of 524 meters (1,720 feet), 470 feet taller than the Empire State Building. Photo by D.J. This mass of rock plunged from an altitude of approximately 3000 feet (914 meters) down into the waters of Gilbert Inlet (see map below). The strong shaking set loose an enormous rockfall, in which 40 million cubic yards of material (9 Superdomes!) On July 8, 1958, an 8.3 magnitude earthquake along the Fairweather fault triggered a major subaerial rockslide into Gilbert Inlet at the head of Lituya Bay on the South coast of Alaska. Photo by D.J. July 9, 1958, a large earthquake along the Fairweather Fault struck Southeastern Alaska. On the night of July 9, 1958, an earthquake along the Fairweather Fault in the Alaska Panhandle loosened about 40 million cubic yards (30.6 million cubic meters) of rock high above the northeastern shore of Lituya Bay. Biggest tsunami ever recorded was in Lituya Bay, Alaska, it’s height – astonishing 524 meters (1724 ft.) On July 9, 1958, an earthquake of magnitude 7.7 (on the Richter scale), caused 90 million tonnes of rock and ice to drop into the deep water at the head of Lituya 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. He took the photographs shown above in July and August and documented the older waves in United States Geological Survey Professional Paper 354-C, Giant Waves in Lituya Bay, Alaska, 1960. Lituya Bay, Alaska’s “Tsunami Alley ... but In 1958, a 7.7 earthquake shook the entire region and caused a huge slab of the mountain to fall into the T-shaped end of the inlet. Mr. Miller was in Alaska when the July 1958 wave occurred and flew to Lituya Bay the following day. Facebook Twitter Instagram Pinterest YouTube. Photo by D.J. This is the talk page for discussing improvements to the 1958 Lituya Bay, Alaska earthquake and megatsunami article. The chaos of deadly mother nature could be heard by locals more than 50 miles away. I can’t help it if they don’t believe me.

It also caused a rockfall in Lituya Bay that generated a wave with a maximum height of 1,720 feet – the world’s largest recorded tsunami. 1958 Lituya Bay, Alaska earthquake and megatsunami - Wikipedi . The head of the slide was at an altitude of about 3,000 feet (914 meters), just below snowfield in upper center. Miller, United States Geological Survey. Les dommages causés par la baie Lituya 1958 Mégatsunami peut être vu sur cette photographie aérienne oblique de la baie Lituya, en Alaska que les zones plus claires sur la rive où ont été dépouillés des arbres loin When will the next one occur. The cliff on the northeast wall of Gilbert Inlet showing the scar of the 40 million cubic yard (30.6 million cubic meters) rockslide that occurred on the day before this photo. Inlet. On July 9, 1958, an earthquake caused a landslide in the Gilbert Inlet at the head of the bay, generating a massive megatsunami which had sufficient energy to run up the hill slope just opposite of the landslide to a height measuring 1,722 feet (525 m), taller than the Empire State Building and snap off all the trees. This mega-tsunami was triggered by a strong 8.3 earthquake at the Fairweather Fault , which resulted in a huge landslide that fell into the narrow inlet of Lituya Bay. In 1958, a giant landslide at the head of Lituya Bay in Alaska, caused by an earthquake, generated a wave with an initial height of 1,719 feet. Photo looking down the Fairweather Fault Trench at the head of Lituya Bay.

It also caused a rockfall in Lituya Bay that generated a wave with a maximum height of 1,720 feet – the world’s largest recorded tsunami. This is the highest wave ever recorded, and surged over the headland opposite, stripping trees and soil down to bedrock, and surged along the fjord which forms Lituya Bay. The red arrow shows the location of the landslide, and the yellow arrow shows the location of the high point of the wave sweeping over the headland. Lituya Bay a few weeks after the 1958 tsunami. Millions of trees were uprooted and swept away by the wave.

Some of the megatsunamis experienced recently include the 1958 Lituya Bay megatsunami and the 1883 eruption of Krakatoa. But a record-breaking tsunami of a different sort occurred in 1958, in a remote part of Alaska known as Lituya Bay — and was witnessed by only six people, two of whom died. The 1958 Lituya Bay megatsunami occurred on July 9 at 10:15:58 p.m., following an earthquake with a moment magnitude of 7.8 and a maximum Mercalli Intensity of XI (Extreme) On July 9, 1958, an earthquake with a magnitude of 8.3 on the Richter scale rocked a small inlet in Alaska called Lituya Bay. light to sound live performance. Lituya Bay is an ice-scoured tidal inlet on the northeast shore of the Gulf While the average tsunami can generate wave heights of around 30 or event 50 feet, megatsunamis are on A COMPLETELY DIFFERENT SCALE! On July 9, 1958, the largest wave in modern history occurred in Lituya Bay, on the northern Southeast Alaska coast about halfway between Cape Spencer and Yakutat. On July 9, 1958, an earthquake (7.9 to 8.3 on the Richter scale) struck Alaska, shaking off a 90 million (long) ton block of rock and ice into Lituya Bay in southern Alaska, … At 10:15 pm on July 10, 1958, the ground shook violently as an M7.8 earthquake occurred along the Fairweather Fault in Southeast Alaska. This tsunami is analogous to the tallest ever recorded tsunami, which hit Lituya Bay, Alaska in 1958. It must have risen several hundred feet. The largest tsunami ever recorded on Earth occurred on July 9, 1958. The elevation of water in Lituya Bay is sea level. A third boat was in Lituya Bay at the time of the tsunami. Perhaps the most famous occurred on July 9, 1958, in Lituya Bay on Alaska’s southeast coast, when a nearby earthquake caused 40 million cubic yards of rock to slide 2,000 feet into the narrow bay. The seven miles long and two miles narrow Lituya … Gilbert Inlet and Crillon Inlet occupy the Fairweather Trench on the northeast end of Lituya Bay. (+39) 0436 868615 Piazzetta San Francesco N°1 - 32043 Cortina d'Ampezzo (BL). The earthquake, measured at 7.9 on the M w scale, was approximately 280 kilometres southeast of Kodiak and happened at a depth of 25 kilometres. Lituya Bay’s steep walls, the geometry of its seafloor, and the fact that it intersects a fault that is often a source of earthquakes suggests that Lituya Bay will see more tsunamis in the future. On the night of July 9, 1958, an earthquake along the Fairweather Fault in the Alaska Panhandle loosened about 40 million cubic yards (30.6 million cubic meters) of rock high above the northeastern shore of Lituya Bay. University of Alaska (2018, July 13) 60 Years Ago: The 1958 Earthquake and Lituya Bay Megatsunami. The effect of the tsunami still visible in 2010. On July 10, 1958, a magnitude 7.7 earthquake occurred on the Fairweather Fault in southeast Alaska. Big chunks of ice were falling off the face of it and down into the water. The 1853-54 wave was estimated at 395 feet, the 1874 wave at 80 feet, the 1899 wave at 200 feet, the 1936 wave at 490 feet and the 1958 behemoth swept trees off a hillside at more than 1,720 feet. Union de i Ladis de Anpezo – U.L.d'A. However, that was dwarfed by a megatsunami that struck Lituya Bay, Alaska, on July 10, 1954, which annihilated vegetation up to 1,720 feet (524 meters.) The Fairweather Fault trends across the northeast end of the Bay and is responsible for Damage from the 1958 Lituya Bay megatsunami can be seen in this oblique aerial photograph of Lituya Bay, Alaska as the lighter areas at the shore where trees have been stripped away. The impact of 40 million cubic yards (30.6 million cubic meters) of rock hitting the water produced a local tsunami that swept the entire length of the Lituya Bay and over the La Chaussee Spit. Scar at the head of Lituya Bay and wave damage on the north shore, from southwest of … Lituya Bay has a history of megatsunami events, but the 1958 event was the first for which sufficient data was captured at the time. On July 9, 1958… On the evening of July 9th, 1958 the largest tsunami ever observed occurred in Lituya Bay in Southeast Alaska. This location is seven miles (11.3 kilometers) away from where the wave originated. On this date, in Lituya Bay, Alaska, an earthquake along the Fairweather Fault triggered a landslide of some 40 million cubic yards with some 90 million cubic tons of debris. It came after a powerful earthquake that measured 8.2 on the Richter scale triggerered a landslide of 30 million cubic meters of rock in the bay's inlet. This is an isoseismal map showing the impact of the Magnitude 7.7 Alaska Earthquake of July 9, 1958 in Modified Mercalli Scale units. The areas of destroyed forest along the shorelines are clearly recognizable as the light areas rimming the bay. On July 10, 1958, a magnitude 7.7 earthquake occurred on the Fairweather Fault in southeast Alaska. Images of the powerful 2011 Japanese tsunami sweeping along the Japanese coast shocked the world as it engulfed entire towns and coastal areas, reaching heights of up to an astonishing 133 feet (40.5 meters), However, that was dwarfed by a megatsunami that struck Lituya Bay, Alaska, on July 10, 1954, which annihilated vegetation up to 1,720 feet (524 meters.). They came off the glacier like a big load of rocks spilling out of a dump truck. 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. As the Lituya bay is located on the fair-weather fault, it is prone to earthquakes and in 1958 it was struck by an earthquake measuring 9 on the Richter scale. A megatsunami is defined as a wave reaching more than 100 meters (328 feet) in the deep ocean. The highest wave ever recorded occurred on July 9, 1958 in Lituya Bay, Alaska reaching a height of 524 meters (1,720 feet), 250 feet taller than the Empire State Building. 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. The world's tallest tsunami - Lituya Bay, Alaska, 1958 Arctic & Northern History 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. I know you can’t ordinarily see that glacier from where I was anchored. On July 9, 1958, an earthquake (7.9 to 8.3 on the Richter scale) struck Alaska, shaking off a 90 million (long) ton block of rock and ice into Lituya Bay in … On 9 July 1958, a giant landslide at the head of Lituya Bay in Alaska, caused by an earthquake, generated a wave with an initial amplitude of up to 520 metres (1,710 ft). The biggest wave ever recorded by humans was documented on July 9, 1958, in Lituya Bay, on the southeast of Alaska, when an earthquake triggered a series of events that resulted in a megatsunami. That went on for a little while—its hard to tell just how long—and then suddenly the glacier dropped back out of sight and there was a big wall of water going over the point. La Palma is currently the most volcanically.. Megatsunami. Its super wave reached 1720 feet (524 meters) and destroyed parts of Lituya Bay in Southeast Alaska. Megatsunami is meant to refer to a tsunami with an initial wave amplitude (wave height) measured in several tens, hundreds, or possibly thousands of meters. 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. A megatsunami is defined as a wave reaching more than 100 meters (328 feet) in the deep ocean. Accessed November 20, 2020. Map information from Seismicity of the United States, 1568-1989 (Revised), by Carl W. Stover and Jerry L. Coffman, U.S. Geological Survey Professional Paper 1527, United States Government Printing Office, Washington: 1993. – 10. Miller, United States Geological Survey. ... 1720 ft is the maximum height of water damage due to the wash. Photo by D.J. The isoseismal contours near the epicenter parallel the Fairweather Fault. It was anchored near the mouth of the bay and was sunk by the big wave. There's one recorded eyewitness account that was made by Bill and Vivian Swanson who were onboard their fishing boat when the earthquake struck: With the first jolt, I tumbled out of the bunk and looked toward the head of the bay where all the noise was coming from. My ship seemed very small there beneath the steep walls of ice and stone. The 1958 Lituya Bay earthquake took place on June 9, 1958, on the Fairweather Fault, causing a rockslide of about 40 million cubic yards into the Lituya Bay. There were three fishing boats anchored near the entrance of Lituya Bay on the day the giant wave … The rocks fell from an elevation of about 3000 feet (914 meters). This massive tremor triggered around 30.6 million cubic meters of rock to fall 3,000 feet into the Lituya Glacier, causing a torrent of displaced water to rear up and form a monstrous wave which, miraculously, only killed five people. 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