Tuesday, July 28, 2026

Fine ordinary Japan Earthquake

 I got some coffee when I went after Phil and Vennie.  Now, I go after Japan.  But they are so insular, I don't even get phoney hits from them.


We expect much better from Japan, but they are the ones who put backup generators in the basement.  Also, they have a lot of 'legacy builds' in areas that aren't regularly wiped clean.

This was a strike-slip earthquake in the stressed zone behind the main subduction zone.


You can see the fault zone is about 100 km long, which puts it into the 6+ category.  I estimate the ground motion to be 10 cm/s because of the light damage.

This is where we have fun because I always say we should ride out 20 cm/s, and their damage is ridiculous.


This is fun because it looks like a cantilever concrete beam with no steel.  Really?  Was it built by the mob?


Really?  What is this construction?  Pick-up sticks?  Oh well, we must allow for corruption.  

Since this seems to be the only damage, that's why I give it 10 cm/s.  Japan is good for publishing the strong ground motion, but I don't want to go through all the barriers for this little guy.

ps they are the best for reporting


Looks like 20-40 cm/s for most of the area, but lots of recordings with very high pgv.  I will suppose these are on soft soils.  So, it is best to make fun while ignorant.


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