For more information, see the Wikipedia Selection for Schools page. "Any historically documented tsunamis pale in comparison with such global impact.A subset of Wikipedia articles were taken offline and hand-checked by a group of volunteer educators targeted around the UK National Curriculum. An hour after the impact, the tsunami had. "Depending on the geometries of the coast and the advancing waves, most coastal regions would be inundated and eroded to some extent," the authors wrote in the study. At the 10 minute mark, a 0.93-mile-high (1.5 km) tsunami wave about 137 miles (220 km) away from the impact site swept through the gulf in all directions. While the models didn't assess coastal flooding, they did reveal that open-ocean waves in the Gulf of Mexico would have exceeded 328 feet (100 m), and waves would have reached heights of more than 32.8 feet (10 m) as the tsunami approached the North Atlantic's coastal regions and parts of the South America's Pacific coast, according to the statement.Īs the water became shallow near the coast, wave heights would have risen dramatically. ![]() "We feel these deposits are recording the effects of the impact tsunami, and this is perhaps the most telling confirmation of the global significance of this event," Range said. Photos: Dinosaur tracks reveal Australia's 'Jurassic Park' 10 extraordinary dinosaur discoveries from 2021 ![]() The 5 mass extinction events that shaped the history of Earth ![]() Related: 52-foot-tall 'megaripples' from dinosaur-killing asteroid are hiding under Louisiana The Fibonacci spiral gets closer and closer to a Golden Spiral as it increases in size because of the ratio of each number in the Fibonacci series to the one before it converges on Phi, 1.618, as the series progresses (e.g., 1, 1, 2, 3, 5, 8 and 13 produce ratios of 1, 2, 1.5, 1.67, 1.6 and 1.625, respectively) Fibonacci spirals and Golden. Four hours following the impact, the tsunami passed through the Central American Seaway - a passage that separated North from South America at the time - and into the Pacific.Ī full day after the asteroid's collision, the waves had traveled through most of the Pacific and the Atlantic, entering the Indian Ocean from both sides, and touching most of the globe's coastlines 48 hours after the strike. An hour after the impact, the tsunami had left the Gulf of Mexico and rushed into the North Atlantic. Just 2.5 minutes after the strike, a curtain of ejected material pushed a wall of water outward, briefly making a 2.8-mile-tall (4.5 km) wave that crashed down as the ejecta plummeted back to Earth, according to the simulation.Īt the 10 minute mark, a 0.93-mile-high (1.5 km) tsunami wave about 137 miles (220 km) away from the impact site swept through the gulf in all directions. Once the asteroid struck Earth, it created a 62-mile-wide (100 km) crater and kicked up a dense cloud of dust and soot into the atmosphere. The initial energy from the impact tsunami was up to 30,000 times larger than the energy released by the December 2004 Indian Ocean earthquake tsunami that killed more than 230,000 people, the researchers found. These boundary sections matched the predictions of their model of wave height and travel, Range said. Neither Hokusai nor his contemporaries is likely to have seen Under the Wave off Kanagawa as a tsunami and most Japanese today resist such a reading We use cookies to enhance your experience on our website.By continuing to use our website, you are agreeing to our use of cookies. ![]() To learn more about the resulting tsunami, Range and her colleagues analyzed the Earth's geology, successfully analyzing 120 "boundary sections," or marine sediments laid down just before or after the mass extinction event, which marked the end of the Cretaceous period. Researchers are aware of many of the asteroid's pernicious effects, such as sparking raging fires that cooked animals alive and pulverizing sulfur-rich rocks that led to lethal acid rain and extended global cooling. The modeled tsunami sea-surface height perturbation(in meters) four hours after the end-Cretaceous asteroid impact.
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