Ground slap - Earth movement

[Bijela]

I can't seem to find any info on this as a measurement from a nuclear device.
I was wondering how all the steel bunkers buried underground would deal with this ?
Would this make this end up being peoples tombs ?
Should you have some sort of plan on how to dig out from where you are ? Joinable pipes and some sort of compression to blow earth out that you dig away.

[Yorkshire Andy]

I can't seem to find any info on this as a measurement from a nuclear device.
I was wondering how all the steel bunkers buried underground would deal with this ?
Would this make this end up being peoples tombs ?
Should you have some sort of plan on how to dig out from where you are ? Joinable pipes and some sort of compression to blow earth out that you dig away.

Proper cold war era bunkers are built on a gravel "shock pad" (big hole dug filled with gravel before building the bunker )

http://studysupport.info/vulcanbomber/bunkers.htm

[Frnc]

I don't know what this means exactly, but it obviously depends how far you are from the blast, and the type of blast. If the blast is on the ground, nearby, I guess there would be a movement of the soil. It would probably behave more like a liquid. If it was water you'd get a tsunami. So I'm guessing some sort of wave movement of the soil. I know volcanic ash with chunks of rock can flow like a liquid - pyroclastic flow.

[Bijela]

I don't know what this means exactly, but it obviously depends how far you are from the blast, and the type of blast. If the blast is on the ground, nearby, I guess there would be a movement of the soil. It would probably behave more like a liquid. If it was water you'd get a tsunami. So I'm guessing some sort of wave movement of the soil. I know volcanic ash with chunks of rock can flow like a liquid - pyroclastic flow.

I'm wondering if when the soil moves in it loose state, if there would be force to bend the stair well to a bunker. Plus, as I'm not that high above sea level. Right now at home I'm near the highest point of the town and I'm upstairs with my watch reporting I'm 30 metres above sea level. Google the town and its only 12, which it could be down the bottom of the hill. So, if I did ever build something I would need to consider water flow. I'm also only 5 miles in land.

[Frnc]

I don't know what this means exactly, but it obviously depends how far you are from the blast, and the type of blast. If the blast is on the ground, nearby, I guess there would be a movement of the soil. It would probably behave more like a liquid. If it was water you'd get a tsunami. So I'm guessing some sort of wave movement of the soil. I know volcanic ash with chunks of rock can flow like a liquid - pyroclastic flow.

I'm wondering if when the soil moves in it loose state, if there would be force to bend the stair well to a bunker. Plus, as I'm not that high above sea level. Right now at home I'm near the highest point of the town and I'm upstairs with my watch reporting I'm 30 metres above sea level. Google the town and its only 12, which it could be down the bottom of the hill. So, if I did ever build something I would need to consider water flow. I'm also only 5 miles in land.

Nuclear explosions in the sea seem to only create small waves, 3-5m high. Most of the energy creates steam, causes vertical fountains above the water, and creates compressional waveforms.
Tsunamis (characterised by a large wave) are caused by underwater eathquakes and landslides into water.
I don't know how useful a bunker might be, it's not somethink I've thought about. I don't have the money or land.