If pressure builds in an area it will ‘squeeze’ the minerals in the crust. If you squeeze (change pressure ) certain types of rock (minerals), they produce electricity.
This electrical ‘charge’ creates an electro-magnetic field. Observers have long reported that just prior to earthquakes there are electrical ‘flashes’ in the sky.
It is a wonderful planet we live on, and we really have a lot to learn about it.
I agree, and I’m all for it unless Leftists make the observations and read all sort of political nonsense into them.
It's called piezoelectricity. It results from the deformation of certain crystalline minerals. Some practical uses include mechanisms that create the spark to start gas stoves and BBQs. One of the minerals that has strong piezoelectric properties is quartz, one of the most common minerals on Earth.
I strongly believe there's something to this hypothesis. During the Northridge quake my wife and I were transfixed by the amazing light show while the ground was shaking. It resembled sheet lighting and continued for the duration of the quake. Critics have told me I was seeing electrical transformers exploding. Good trick, since all our utilities are underground.
That is plausible. The hard part for me is how does the stress induced electromagnetism penetrate miles of crust?