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.