Quote:
Originally Posted by oil pan 4
All you need is a few minutes warning to get outta buildings and away from stuff that can fall on you.
The sensors appear to sit at ground level, maybe as deep as a water well. No special technology required.
If they had some government money then maybe it could be a thing. But according to the government earthquakes can't be predicted, even by a few minutes.
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There are, what are called 'deep focus' earthquakes. Seismic activity happening at depths of 400- kilometers below surface level can effect triggers along fault boundaries.
No one has ever drilled a hole any deeper than 10-miles ( 16-kilometers ). With present technology, it's impossible to instrument these areas.
All 20,000 quakes / year would need to be predicted. On the continents and undersea.
Emptying thousands of people out of skyscrapers and safely getting millions of them out of urban areas and above tsunami levels might require larger time domains. Mass burial sites are already designated for these victims in California.
The US NAVY has the ocean floor littered with hydrophones which can detect a whale fart at 2,000-miles, but in the event of 'hearing' even a tremor, they wouldn't be allowed to communicate its existence, as doing so, could give away state secrets to our adversaries. One downside to secrecy/ national security.