Is there a formula to compute the destructiveness of an earthquake?

I am trying to find out if there is a way to compute if an earthquake is destructive. I am looking for a threshold formula which depends on magnitude and depth

for example

X = (some constant) * magnitude * depth


if X > (some constant) the earth quake is destructive or secondary effects (landslides, fires, floods or tsunamis) are destructive.

This can help in finding out if there is a fixed pattern for the locations of earthquake.

• You are trying to reduce a multi-dimensional problem to a single-dimensional variable. This is rarely a good idea. There are too many other factors that come into play for this too be possible. – bon Jun 29 '16 at 8:20