In the Niven/Pournelle book "Lucifer's Hammer" from the 1970s they talk about this. If it hits land, it's pretty much tough luck for anyone under it. If it hits water, it's very bad globally. Besides the tsunami, it would also instantly vaporize a huge volume of water into the atmosphere.
Great book.
Great Book...great survival guide
How do you know this? Has this been proven by MIT scientists?
"Besides the tsunami, it would also instantly vaporize a huge volume of water into the atmosphere."
Wonder how long it would take, for such a huge volume of seawater to precipitate back to ground? I''d think that salt damage to productive agricultural lands would be a potential problem lasting long after other damage is repaired as well.
Also Footfall, except the aliens are using the rock to wpe us out.
I've got that one on one of my bookcases somewhere...
I havent read the book in a while and cant find my copy, does anyone rememer why the US and the Soviets nuked China in that book after the asteroids hit?