You’ll find an old post from when I had to the energy to make diagrams. These are the most devastating of all earthquakes because the pgv (velocity) is higher for magitude of any other mechanism.
These earthquakes happen around the world, whenever there is compression on a mountain range. For this, the compression is Africa jamming up against Europe. You can count on one of these at a given spot every 500 years. The pgv is about 1 m/s and throws houses into the air, and sends down boulders.
Speaking of engineering physics, we can talk about old dams, rotting away, without an adequate spillway. That’s called ‘dam safety’, and poor Libya. Sad.
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