Terrawatch: Asteroid that worn out dinosaurs triggered international mega-tsunami | Asteroids


Any dinosaur that survived the Chicxulub asteroid affect 66m years in the past then confronted a mega-tsunami that washed across the complete world and started as a mile-high wave, a examine reveals.

It’s no shock {that a} 14km-wide asteroid slamming into the Gulf of Mexico would generate one hell of a tsunami however that is the primary time anybody has labored out how large and the way far-reaching it could have been.

Utilizing crater affect and international tsunami fashions, researchers present that inside 10 minutes of affect a 1.5km-high wall of water was racing out of the Gulf of Mexico. Inside 24 hours the shores of New Zealand – greater than 10,000km away – had been engulfed by towering 10-metre excessive waves and inside 48 hours few coastlines remained untouched.

Their outcomes, printed in AGU Advances, are corroborated by the jumble of rocks washed up by the tsunami in far-flung areas. A 66m-year-old rock mashup alongside the japanese shores of New Zealand had initially been attributed to earthquake exercise however is now regarded as tsunami particles.

The researchers estimate the tsunami was about 30,000 instances extra energetic than the Indian Ocean tsunami on 26 December 2004. β€œAny traditionally documented tsunamis pale compared with such international affect,” they write.


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