Friday, February 25, 2011

Login Edit Feedback Christchurch earthquake: Levels of liquefaction 300 - 500 pc worse

The level of liquefaction after Tuesday's 6.3 magnitude aftershock dwarfs the amount caused by the original earthquake that hit Christchurch in September, Mayor Bob Parker says. He says the amount of damage is particularly high in the city's eastern suburbs. "The scale of this is huge. "Possibly 300 to 500 per cent the level of liquefaction we had in September." Liquefaction happens when soil is subjected to severe shaking, causing it to lose strength or stiffness. It is most likely to occur in soils with poor drainage. At a press conference this evening, Mr Parker also reminded Christchurch residents to conserve water amid efforts to repair


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