if you were airborn, would you feel any effects of an earthquake if there was one on the ground below you? my guess is that nothing would happen to you, but it would be cool to see building collapsing from the air!!!
You wouldn't know that anything had happened. You probably wouldnt even be able to see that anything was happening even if you were really low to hte ground. This is especially true up at cruise altitude. You are 7 miles from the ground up there...any movement..no matter how sudden would be hardly noticeable from up there.
That question ranks up there with...
1. If there's a fly in your airplane is the gross weight of the aircraft reduced by the fly's weight whenever it's flying around in the cabin?
2. Why can't you feel it when an airplane flys directly overhead?
A few years ago I was on a trip to the east coast. It was about 11 pm and we were cruising over a large city at FL410 when they had a power failure. It was pretty interesting to be looking at the lights of the city one moment then then next moment half of the city went completely dark. The lights just flickered on and off a couple of times then darkness. Oh well, just thought that I'd add that comment.
Actually, what IS the answer to the second one? If an airplane is on final approach, just 30-50 meters above my head, why don't I feel it? After all, shouldn't at least my ears pop a bit due to the increased pressure under the wing or something? The only thing I felt yesterday at LHR was bone-shattering noise when that DC10 landed...