LIQUEFACTION – WHAT IS IT

LIQUEFACTION – WHAT IS IT

Liquefaction is a process where by firm ground takes on a liquid form temporarily. This generally happens during seismic events such as earthquakes. A notable example of this was during the Canterbury earthquakes of September 2010 and February 2011. In these events liquefaction caused silt and fine sand to ‘boil’ up and cause widespread damage. Entire streets were buried with this silt and sand, swallowing vehicles and buildings alike. Causes of liquefaction Over the course of thousands of years, rivers and streams deposit layers of silt and sand. Low-lying areas such as swampland and peaty marsh have higher concentrations of this silt and sand. Coastal areas also generally have higher […]

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