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RH likes his trip gigatons so I'm gonna organize this. Plus, accepted calcs don't like RH's blog
I don't really mind using his radius of 14km.
2*atan(tan(70/2)*(770/189) = 141.364237292408
Ignore his 47px value and look at my 17px value.
Plug those numbers into the Angsize calculator and we get...
Use these measurements to scale the last panel in the next scan, rather than the scaling that's already there. Ignore all lines but the red one.
Dunno if I really agree with scaling from two different panels, but whatever.
Height of rock mass
Length of rock
Width of rock
For density (rho) I'll use 2700kg/m^3.
Now we calc the area of the cross section, which is an ellipse.
Now the surface area of the blast.
or about 3.35 gigatons.
The final number
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