How Strong Is This: The Reboot

[ZoroNotZolo]

I remember when I did a series of these before the forum move lol. Well, I guess I'm going to bring it back for the following question.

If there was an island the size of Greenland that was completely destroyed by a single shockwave, and that same shockwave destroys the coastline of an island 10 kilometers away, how powerful would that be?

 

[ZoroNotZolo]

bump

 

[Setsuna_tenma]

High 6B+. There was a calc about destroying india being High 6B+. Greenland is 1.5 times smaller so it should still be in these ranges

 

[ZoroNotZolo]

Neat.

 

[Setsuna_tenma]

By following this Calc
Greenland is 2670 KM long
((2670÷.28)^3)÷2=433540520226 kilotons
about 400 teratons