What is the significance of the depth being reported as 10km?
Is that some sort of minimum for a quake, or did they dig down 10,000m to fire this thing off? That seems rather deep even for a large bomb, which this wasn't.
Initial reports had it at 10km deep -- which would've been far too deep for a bomb test -- they've since been revised to 0km deep, which is what you'd expect for a test beneath the surface.
The 10km was interesting since if it held up, it would have likely ruled out a test, but it turns out that the first readings were wrong.
Is that some sort of minimum for a quake, or did they dig down 10,000m to fire this thing off? That seems rather deep even for a large bomb, which this wasn't.