Soil Liquefaction During Earthquakes

Hi folks. There was a terrifying earthquake in Sulawesi recently. Over 70 people died. Damage has been extensive. I hope the people will be able to pick up their lives and move on as quickly as they can. I am sure there are those among you who can get together and organise some aid to the stricken folks. Rebuilding damaged homes will be a priority.

I received the following video, originating from Indonesia. It is believed to be Sulawesi.  This is known as soil liquefaction.

When the earth moves, there is extreme compression under the soil surface. Ground water can get squeezed out, lubricating layers of soil and causing mudslides and in this case movement of the soil surface - substantial movements. 

This is not a tsunami receding. A large stone house and an intact, vertically standing steel communications tower are seen travelling quite a distance across the land.

Here is a similar video from Fukushima, Japan although on a smaller scale.




Link :  https://www.youtube.com/watch?v=RJCidfj-x9M&feature=youtu.be

posted by Syed Akbar Ali

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