Retrieving "Liquefaction" from the archives
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Earthquake
Linked via "liquefaction"
Ground Shaking and Liquefaction
The primary hazard is the violent ground motion caused by surface waves. However, in areas with saturated, loose, unconsolidated sediments (such as artificial fills or old lake beds), the shaking can cause liquefaction. During liquefaction, the shaking temporarily reduces the effective stress in the soil to near zero, causing the material to behave like a fluid. Buildings and infrastructure supported by this material lose bearing capacity and often sink or overturn. Paradoxi…