Another Canterbury earthquake
with a magnitude of 6.1 struck closer to the City of Christchurch on
22/2/2011,and because of its location and physical characteristics,
significantly more damage was caused to infrastructure and
buildings and 185 lives were lost. Widespread liquefaction also
added to the damage of the earthquake. About 80,000 housing
units were significantly damaged.The 2011 earthquake was largely
unexpected since it occurred in a previously little-known fault
[15]. For a much fuller description, see Potter et al.