this post was submitted on 19 Jun 2023
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Title is worded a bit misleadingly, it sounds like something from outer space causes earthquakes, but it's not the case:
So as I understand, when an earthquake happens, it also disturbs the magnetic field of Earth, and you can measure this disturbance by measuring cosmic radiation.
The magnetic field changes ~15 days before an earthquake happens.
Stuff moving around in the outer core changes the magnetic field.
So looking for patterns in the data from cosmic ray detectors can tell us something about what's going on in the core, which is predictive of when an earthquake is about to happen . . . somewhere.
Seems like it’s a useful predictive tool, maybe a bit more refinement of the method will let them tell where it will be.