2011 Christchurch Earthqauke
Scientists have tried many different ways of predicting earthquakes, but none have been successful. One basic idea behind quake prediction is that faults send out subtle but detectable warnings before they slip. Scientists have looked at a host of potential warning signals, or "precursors," including foreshocks, weird animal behavior, and changes in the water table, stream flow, well levels, and patterns of electrical currents in the ground. However, on any particular fault, scientists know there will be another earthquake sometime in the future, but they have no way of telling when it will happen.
At 4:53 pm on January 12 2010, the worst earthquake to hit the Caribbean in 200 years struck the impoverished nation of Haiti. The epicentre of the 7.0-magnitude earthquake was only 25 kilometres from the country’s capital, Port-au-Prince. The damage was massive and immediate, with the death toll to reach 230,000.