3 ms·

> days or perhaps weeks before a quake How long before a quake do you think something theoretically measurable occurs, and what might that thing be? Unlike the

> days or perhaps weeks before a quake How long before a quake do you think something theoretically measurable occurs, and what might that thing be? Unlike the EM effects on the time scale you describe which we might readily figure out how to monitor, for my question I'm not limiting the scope of answers to just those things that are potentially practical to detect with current technology! Any physical change is fair game as a response. For example, maybe an answer is the likes of "X phenomenon probably has an inflection point exactly halfway between each quake, so potentially years of advanced notice if only we had a way to detect it" or some such.

hilbert42 3y ago
"How long before a quake do you think" I don't know, I'm not a geologist, vulcanologist nor any type of earth scientist. Moreover, I reckon it'd be impossible to generalize as every instance would be different. The only thing one could say in the absence of data would be that EM effects would build up over time to a tipping point and then quickky release like a sawtooth waveform but if you want more accurate info then ask the experts. The point I was making was that because of stresses on rock forces build up and produce EM waves before the tipping point occurs. It's detecting the build-up before its release that has the potential to save people. I've lost track of those original papers that influenced me. If anyone comes across them I'd like the references.