[CindyDawg]

Is that good or bad? (depth, not Iran)

[nuconvert]

Shallow, strong quakes cause the most damage.

[NorCalRepub]

depth is called a hypocenter and for instance in Calif usually shallow like 15 miles or so.....in Alaska where the biggest quakes are, they are deeper.....you will feel a shallow quake more than a deep on given the same magnitude,, and deep ones are harder to measure.....though a deep one of significant magnitude would do severe damage as well......a 6.0 at that depth wouldn't be much in Calif but is still bad in Iran.....

[bd476]

"...The destructive power of an earthquake depends on the depth of its point of focus. For the most common quakes, known as "shallow-focus" events, the focus is just a few dozen kilometres below the surface. Because the crust is in motion so close to the surface, these are the most powerful and deadliest quakes.

In contrast, "deep focus" earthquakes originate hundreds of kilometres below the surface, and cause less damage..."

CBC News Online: Earthquakes