12/10/2023 0 Comments Comet deep ocean waves![]() If you think your post has disappeared, see spam or an inappropriate post, please do not hesitate to contact the mods, we're happy to help. ![]() Spam, machine-generated content, and karma farming are not permitted. more >ĭo not post harmful misinformation. more >Ĭomment replies consisting solely of images will be removed. Mods reserve the right to remove content or restrict users' posting privileges as necessary if it is deemed detrimental to the subreddit or to the experience of others. Soliciting money, goods, services, or favours is not allowed. tagged posts are off-limits to jokes or irrelevant replies. more >ĪskReddit is not your soapbox, personal army, or advertising platform. ![]() Posting, or seeking, any identifying personal information, real or fake, will result in a ban without a prior warning. more >ĪskReddit is for open-ended discussion questions. more >Īny post asking for advice should be generic and not specific to your situation alone. Your thoughts/responses to the question can go in the comments section. The title may contain two, short, necessary context sentences. For more information, see the original University of Michigan press release, NOAA release, or AGU Advances Research Article.You must post a clear and direct question in the title. In a future study, PMEL’s Vasily Titov plans to model the extent of coastal flooding caused by this tsunami, which will further inform tsunami impact forecasts. In addition, the ability to reproduce mega-events like this is an important validation that the models can help scientists forecast global impacts of more conventional tsunamis that humanity has to deal with. This study helps to assess and quantify the risk of future large asteroid impacts. Additionally, the research team reviewed the geological record at more than 100 sites worldwide and found evidence that supports the models’ predictions of the tsunami’s path and power - a remarkable verification of the model for the megatsunami event of 66 million years ago. A large computer program that models details of complex fluid flows, called a hydrocode, simulated the first 10 minutes of the tsunami generation, and two NOAA-developed models were then used to simulate the tsunami propagation around the global ocean. Numerical analysis of the event used three different models to reproduce tsunami generation and propagation. This dataset presents the first global simulation of the Chicxulub asteroid impact tsunami. How the simulation was made to How the simulation was madeĪn international group of researchers from academic institutions and government agencies, including NOAA’s Pacific Marine Environmental Lab and Geophysical Fluid Dynamics Lab, combined numerical modeling and analysis of geological records to recreate the global impact of the tsunami generated by the asteroid. Ten minutes after the projectile hit the Yucatan, and 220 kilometers (137 miles) from the point of impact, a 1.5 kilometers high (0.93 miles) tsunami wave-ring-shaped and outward-propagating-began sweeping across the ocean in all directions, according to the U-M simulation. Two and a half minutes after the asteroid struck, a curtain of ejected material pushed a wall of water outward from the impact site, briefly forming a 4.5 kilometers high (2.8 miles) wave that subsided as the ejecta fell back to Earth. Note that even though the color bar numerical values top out at +/- 5 meters, the wave amplitudes were much more extreme in some places. ![]() The colors on the tsunami animation are associated with both positive (red) and negative (blue) wave amplitudes, highlighting how the ocean ripples with both higher and lower water levels in the ocean basins during a catastrophic tsunami. After the first 48 hours, the tsunami had mostly subsided except near the point of impact. The animation shows tsunami wave amplitude 10 minutes after impact until 48 hours after impact, shown in hours below the scale. The white country borders show where the land masses are today - moving at approximately 2.5 cm (1 inch) per year, the continents are constantly drifting. In this dataset, the black continents depict the land masses at the time of the impact, around 66 million years ago. Recent historical tsunamis pale in comparison with this globally catastrophic event, thought to be 30,000 times more initial energy than any recorded events. The 6+ miles wide asteroid that hit Earth 66 million years ago, widely accepted to have wiped out nearly all the dinosaurs and roughly three-quarters of the planet’s plant and animal species, also triggered a megatsunami with mile-high waves. ![]()
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