Mexico cityAccording to the first global simulation of this event, the asteroid Chicxulub, which killed dinosaurs 66 million years ago, caused a tsunami that spread throughout the world.
Scientists led by Molly Range from the University of Michigan Ann Arbor used two models for modeling. One for the initial impact of an asteroid with a diameter of 14 kilometers in shallow water, and the other for the subsequent distribution of water displaced throughout the ancient ocean.
According to the model, the first effect of an asteroid hit would be a tsunami wave about 1500 meters high. The study was presented at the autumn meeting of the American Geophysical Union.
The impact of the tsunami quickly spread from the Gulf of Mexico to the Atlantic and through the sea routes of Central America to the Pacific during the first 24 hours. Reflection and refraction of waves create a more complex pattern of tsunami propagation 48 hours after the impact with a height of 14 meters.
The flow velocities exceeded 20 centimeters per second along the shores of the whole world and could change the bottom sediments by more than 6 thousand kilometers from the impact source.
Compared with the tsunami in the Indian Ocean of December 26, 2004, one of the largest tsunami in modern history, the impact of the tsunami was about 2,600 times more energetic.
This model suggests that the asteroid impact not only had a significant impact on the global atmosphere and biosphere, but also created a tsunami of such magnitude that its impact was felt in most of the global ocean.