Thanks everyone. I appreciate your responses. I am not sure, though, if you didn't understand me or if I don't understand you. So, let me re-phrase my question and maybe I can learn more. (Diane: I will look at the Stanford site- thank you!)

When you buy a model airplane, you select a model that is fashioned to a particular scale. For example 1/16 to one or some other ratio. The model then, is built in direct proportion to its real-life counterpart.

If, during a quake, the earth vibrates at a particular frequency, does that frequency change with magnitude? For example, does a 2.5 cause waves that oscillate at 10 cycles per second and a 3.5 cause waves that oscillate at 20 cycles per second?(my numbers here are just for discussion - I have no idea of the frequencies involved).

Whatever the frequency, the waves propogate over an area that covers miles and miles of terrain. So, the waves are huge in scale. If I strike a piano key, the string vibrates and produces a wave that moves through the air and causes my ear to vibrate in response and I perceive the sound. These waves are much smaller, cover a much smaller distance and are faster in their oscillations.

So, my question is: Is there a porportional ratio that can be applied to the two waves much like the ratios of model airplanes to real airplanes? Is the size of an earthwave 10 times, 132 times, 14.8234 times larger than the waves created by middle C? Can a 3.0 be mathematically porportional to middle C and a 3.8 mathematically porportional to E#?

If the answer is "yes", then it seems to me that some interesting music could be created by playing the "notes" of the earth movements over a period of time in a particular geographic area. Any predictive value? I doubt it - unless of course California was playing "Hey Jude".

Thanks again all. I appreciate the chance to learn something.

Russell