Science

 What Happened? At 12.51 p.m. on Tuesday 22 February 2011, a magnitude 6.3 earthquake caused severe damage in Christchurch and Lyttelton, killing 185 people and injuring several thousand. The earthquake's epicentre was near Lyttelton, just 10 km south-east of Christchurch's central business district.

Where and when was it? It Happened on the 22nd of February 2011 The earthquake struck the Canterbury region in New Zealand's South Island and was centred 6.7 kilometers (4.2 mi) south-east of the centre of Christchurch, New Zealand's second-most populous city. The earthquake caused widespread damage across Christchurch, killing 185 people in the nation's fifth-deadliest disaster.

 

Why was it a disaster? The earthquake was caused by the rupture of a 15-kilometer-long fault along the southern edge of the city, from Cashmere to the Avon–Heathcote estuary. The fault slopes southward beneath the Port Hills and did not break the surface – scientists used instrument measurements to determine its location and movement.

What is the science behind what happened? Here is a Link about the science behind it all 

https://www.livescience.com/12943-zealand-earthquake-christchurch-110222.html

https://storymaps.arcgis.com/stories/bce482b753d5491dae13b7b8c5654ead