Lituya Bay is a T-shaped fjord on the coast of the Alaskan Panhandle, west of Glacier Bay and about 120 miles west-northwest of Juneau. It measures 7 miles lengthy by 2 miles at its widest level and has a slim mouth that makes navigation troublesome throughout excessive tides. Water from three glaciers empties into Lituya Bay, which is over 700 toes deep in locations.
At 22:15 hours on July 9, 1958, an earthquake with a magnitude of seven.9 struck the Lituya Bay space, the strongest in over 50 years for this area. The earthquake triggered a rockslide of 30 million cubic metres to fall from a number of hundred metres into the slim inlet of Lituya Bay. The rockfall generated a wave with a most peak of 1,720 toes (524 meters) – the world’s largest recorded tsunami. The massive mass of rock struck with nice drive the sediments at backside of Gilbert Inlet on the head of the bay. The wave then continued down your complete size of Lituya Bay, over La Chaussee Spit and into the Gulf of Alaska. The drive of the wave eliminated all bushes and vegetation from elevations as excessive as 1720 toes (524 meters) above sea stage. The influence created a big crater and displaced and folded latest and Tertiary deposits and sedimentary layers to an unknown depth. After the earthquake it was noticed subglacial lake, positioned northwest of the bend within the Lituya Glacier on the head of Lituya Bay, had dropped 100 ft (30 m). Scientists have been puzzled for a while by the sheer measurement of the wave, as a result of they might not establish a mechanism that would have created such a large response. Ultimately, it was found piece of rock, 2,400 toes by three,000 toes, and 300 toes thick, had dislodged from the face of the northern wall of the inlet, and fallen 2,000 toes into the bay. Incredibly, a number of eyewitnesses on the bay on the time the tsunami struck, lived to inform the story. Only two individuals from a fishing boat died because of having been caught by a wave within the bay.
The 1958 wave was by far the biggest to devastate Lituya Bay, nevertheless it was solely the most recent to be documented there by the U.S. Geological Survey. Previous monster waves struck the fjord in 1853, 1874, 1899 and 1936.
(South aspect of Lituya Bay, quickly after the tsunami. This trimline is 180 toes above sea stage and 1000 toes from the excessive tide mark/Photo: USGS)
The submit JULY 9 1958 – LITUYA BAY WORLD’S LARGEST RECORDED TSUNAMI appeared first on Energy Global News.