Seismometer coverage is very thin here, so we won't learn much.
I am more impressed about how many really weak walls still stood. You can't have any worse construction for earthquakes. However, the specific area probably hasn't had a big earthquake for hundreds of years, or the construction would be better.
As such, I'm willing to guess that the peak ground velocity (pgv) would have been measured as the lowest ever to cause housing damage. Perhaps 10 cm/s. To me that implies the actual epicentre was more in the mountains. There is a huge error band for the seismometer-determined location. Somewhere a goat herder 'heard' gunshot noises, and that would be the epicentre.
Still, a tragic loss of life.
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