📖 what
What is liquefaction in geology?
Quick Answer
Liquefaction is when water-saturated soil temporarily loses strength and behaves like a liquid during shaking. It often happens during strong earthquakes.
The Full Story
During an earthquake, loose sandy or silty ground with plenty of water can lose its ability to support structures. The shaking increases pore water pressure, reducing friction between grains and causing the soil to act like a fluid. This can make buildings sink, tilt or collapse and can crack roads and pipelines. Liquefaction was a major factor in damage from earthquakes such as the 1964 Alaska quake and the 2011 Christchurch earthquake.
Key Facts
1.Occurs in water-saturated loose soil
2.Can happen during strong earthquakes
3.Damaged Christchurch in 2011 and Alaska in 1964
YouTube Angle
Suggested video title for this topic:
"Why solid-looking ground can turn to mush in an earthquake"
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