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2018-12-20. Huge Global Tsunami Followed Dinosaur-Killing Asteroid Impact.

posted Dec 31, 2018, 9:18 PM by Alan Gould
By Katherine Kornei, Eos/AGU. [https://eos.org/articles/huge-global-tsunami-followed-dinosaur-killing-asteroid-impact] For GSS Life and Climate chapter 9 and A Changing Cosmos chapter 1. Excerpt: The devastating tsunamis that struck the coastlines of Chile, Haiti, Indonesia, and Japan in recent decades produced waves tens of meters high, unimaginable to most people accustomed to gentle seas. But millions of years ago, a truly inconceivable set of waves—the tallest roughly 1,500 meters high—rammed through the Gulf of Mexico and spread throughout the ancient ocean, producing wave heights of several meters in distant waters, new simulations show. The enormous waves were triggered by a large asteroid slamming into the shallow waters of the modern-day Yucatán Peninsula. That asteroid impact, which occurred about 66 million years ago and created the Chicxulub crater, contributed to the demise of the dinosaurs....