We could measure the temperature, we could measure the pH of the air, and we could measure how loud is the sound in the air. There are quite a few possible physical parameters that could be monitored. But it does not mean an earthquake prediction program should blindly sample everything.

We are spending a lot of money on GPS and drilling because looking at the strain in the Earth and looking at fault material in situ will be helpful.

If you have some evidence your ideas have merit, propose to the EarthScope initiative at NSF, for the mid-July deadline. They are giving out money to promising proposals, and I'll probably put one in. But you'd better have more facts and observations at your disposal than you've shown here.

John