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A meteotsunami or meteorological tsunami [1] is a tsunami-like sea wave of meteorological origin. Meteotsunamis are generated when rapid changes in barometric pressure cause the displacement of a body of water.
Burckle Crater's position was determined in 2006 by the Holocene Impact Working Group using prehistoric chevron dune formations in Australia and Madagascar.Based on a hypothesis that these dunes were formed by a megatsunami resulting from an impact, the researchers were able to triangulate the location of Burckle Crater.
The giant meteorite caused a tsunami to sweep across the planet, the scientists found. Heat from the impact caused the topmost layer of the ocean to boil off, while also heating the atmosphere.
In 1998, a meteorite, approximately 2.5 millimeters (1 ⁄ 8 in) across, was described from a deep sea sediment core from the North Pacific, from a sediment sequence spanning the Cretaceous–Paleogene boundary (when the site was located in the central Pacific), with the meteorite being found at the base of the K-Pg boundary iridium anomaly ...
A recent study indicates that the meteor that created the 75-mile Lomonosov crater may have produced a "mega-tsunami" that left its mark on the planet. Its rim is the same height as the estimated ...
Oceans would have boiled away and everything would have been coated in a deadly dust – but still something thrived
A megatsunami is a tsunami with an initial wave amplitude measured in many tens or hundreds of metres.The term "megatsunami" has been defined by media and has no precise definition, although it is commonly taken to refer to tsunamis over 100 metres (330 ft) high. [2]
When the tsunami's wave peak reaches the shore, the resulting temporary rise in sea level is termed run up. Run up is measured in metres above a reference sea level. [58] A large tsunami may feature multiple waves arriving over a period of hours, with significant time between the wave crests.