An interactive map of the New South Wales tsunami features, with many new photographs, is now available at: A last wave goodbye - An asteroid landing in the ocean would produce the tsunami to end them all, says Duncan Steel. Superfloods Controversial, But Aid Flood Prediction - The massive flood cut deep canyons, stripped away soils, and carried boulders all the way from Idaho to what is now Portland, Ore. In 48 hours, it transformed the landscape of the Pacific Northwest.
New analysis of Chicxulub asteroid suggests it may have struck in vulnerable spot November 10, by Bob Yirka, Phys. In their paper published in the journal Scientific Reports, Kunio Kaiho and Naga Oshima suggest that had the asteroid struck another part of the planet it is likely the dinosaurs would have survived.
Scientists around the world have reached a consensus regarding the reason that the dinosaurs except for bird relatives went An analysis of asteroid impact large asteroid struck the Earth just off what is now the Yucatan peninsula, hurling so much soot and other material into the atmosphere that the planet became too cold for approximately three years for the dinosaurs and most other land animals to survive.
But now, it appears that they might have survived had the asteroid struck almost anywhere else. To learn more about the event that had such a huge impact on the history of our planet, Kaiho and Oshima used a computer to analyze multiple data sources surrounding the impact and the location where it struck—the resulting simulation showed how much soot would have been generated based on the amount of hydrocarbon material in the ground near the impact site.
Such hydrocarbons would include not just oil or coal deposits, but other rocks that also contained oil—more hydrocarbons would mean more soot and gases making their way into the atmosphere. The research pair also created a map showing surface hydrocarbon densities across the globe at the time.
They found that the site where the asteroid struck was particularly dense in hydrocarbons—87 percent of the planet surface was less dense. That means, they claim, that if the asteroid had struck a place where it was less dense which would have been almost anywhere elsemuch less soot would have been generated, and thus, the planet would not have cooled as much.
And if the planet had not cooled so much, the dinosaurs might have survived, and that might have meant that we humans would never have had a chance to evolve. Mass extinction only occurred when the asteroid having 9-km diameter hit the orange areas.
Kunio Kaiho More information: Kunio Kaiho et al. Site of asteroid impact changed the history of life on Earth: Recent studies have shown that this impact at the Yucatan Peninsula heated the hydrocarbon and sulfur in these rocks, forming stratospheric soot and sulfate aerosols and causing extreme global cooling and drought.
These events triggered a mass extinction, including dinosaurs, and led to the subsequent macroevolution of mammals. The amount of hydrocarbon and sulfur in rocks varies widely, depending on location, which suggests that cooling and extinction levels were dependent on impact site.
Here we show that the probability of significant global cooling, mass extinction, and the subsequent appearance of mammals was quite low after an asteroid impact on the Earth's surface.
The site of asteroid impact, therefore, changed the history of life on Earth.Comet and Asteroid Threat Impact Analysis James A. Marusek* Impact, Bloomfield, Indiana, [Abstract] A comet or asteroid impact event can release tremendous destruction which.
(torosgazete.com)—A pair of researchers at Tohoku University has found evidence suggesting that if the asteroid that struck the Earth near Chicxulub 66 million years ago had landed almost anywhere else. An asteroid impact 66 million years ago wiped out life across the planet, but microorganisms quickly rebounded. New research has found evidence for a diverse array of plankton and other organisms. A collection of amazing space pictures featuring images from the Hubble telescope and time lapse photos of the night sky. Free wallpaper downloads.
Welcome to the Earth Impact Effects Program: an easy-to-use, interactive web site for estimating the regional environmental consequences of an impact on Earth.
This program will estimate the ejecta distribution, ground shaking, atmospheric blast wave, and thermal effects of an impact as well as the size of the crater produced.
Tsunami generated by impacts Although, for a given location on the Earth's surface, the risk of a "direct" hit from an asteroid is slight, researchers realized that an ocean impact had the potential to be much more destructive due to the effects of tsunami. An asteroid impact 66 million years ago wiped out life across the planet, but microorganisms quickly rebounded.
New research has found evidence for a diverse array of plankton and other organisms. A cosmic impact in what is now Chicxulub in Mexico dealt dinosaurs the final deathblow some 65 million years ago, say scientists who have fresh evidence supporting the case. After almost two years in space, NASA's groundbreaking spacecraft OSIRIS-REx is now on its final approach to its target—the asteroid Bennu, a mountain-sized, near-Earth object that scientists.