As somebody who has been through more than 10 thousand quakes, it's as significant as the force itself.
7.4 @ 300km deep you just yawn and roll over. @10km deep you pray your concrete roof tiles don't come through the ceiling and kill you in your bed... you basically just lie on top of your wife, give thanks for the time you did have, and hope for the best.
7.4 @ 300km deep you just yawn and roll over. @10km deep you pray your concrete roof tiles don't come through the ceiling and kill you in your bed... you basically just lie on top of your wife, give thanks for the time you did have, and hope for the best.