Tuesday, April 23, 2024

Taiwan M7.4 earthquake - strong ground motion

 I just picked this out of some reports that aren't very good.  It's the best I can do with Taiwan.  I conclude it is exactly the same as the famous Chile earthquake with the same tilted buildings.

This is the 'firm ground' record.  You can see that the velocity time history is clean, and two pulses.  If there were a ground motion on rock, I would expect a single pulse.

This is a soil basin motion.  Note the very long rumble, and a high acceleration.  This the stuff of California earthquake history.

ps. this is an interesting earthquake.  I'm learning from it, but nobody else is.  We wait for the next one.

No comments: