Earthquakes and Piezoelectricity

[last updated: 2020-01-23]
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• From Jan 2020 QSL magazine, definitely "out there"...
  Not exactly sure what the theory is. It seems to be related to the fact (theory) that rocks in the earth's crust generate piezoelectricity at RF frequencies when they move in preparation for an earthquake. However the data collection he's doing suggest that it's not the signals themselves but general propagation due to some interaction with the ionosphere.
• Alex Schwarz VE7DXW has an "RF Seismograph Project" (link 17)

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