2 ms·
https://en.wikipedia.org/wiki/Richter_magnitude_scale https://en.wikipedia.org/wiki/Richter_magnitude_scale "9.0 and greater. At or near total destruction – se
by thangalin 5y ago
https://en.wikipedia.org/wiki/Richter_magnitude_scale https://en.wikipedia.org/wiki/Richter_magnitude_scale
"9.0 and greater. At or near total destruction – severe damage or collapse to all buildings. Heavy damage and shaking extends to distant locations. Permanent changes in ground topography. One per 10 to 50 years."