Thanks for sharing this information. I had no idea where Ishikawa was so I had to look it up on Google Maps. That area seems quite remote compared to the larger cities like Tokyo, so it makes sense that there would be much older infrastructure there. My heart breaks for both the people, and the destruction of history in that area. I hope that the people can afford to rebuilt rather than move away, and hopefully with more modern buildings
In terms of earthquake preparation, I lived in BC for awhile and we had to do earthquake training at work. There really isn't that much you can do in the moment other than hide under a sturdy surface so that people can find you when the roof caves in. Preparation is the key factor really.
If you want a spooky story to read before bed,
(you need an account to see links) is a great read. Its about a huge fault line called Cascadia that spans from California all the way to Vancouver Island.