Scientists have revealed incredible new insights into the 7.8 Kaikoura earthquake, including the most violent ground shaking recorded in New Zealand. GeoNet typically calculates the ground motion its seismometers detect with what's called peak ground acceleration (PGA), a measure often compared to acceleration due to gravity. Waiau School principal Mary Kimber said the power of the quake, which shook bricks from her home and ripped shelves off their bolts, was terrifying. Waiau Pub co-owner Lindsay Collins, who was in Christchurch for all of the major Canterbury quakes, said the shake was the most frightening he'd experienced. quakeforce1.jpg Graphic NZ HeraldIt collectively encompasses the Kekerengu Fault, the Jordan Thrust, the Upper Kowhai Fault, and the Needles Fault.

Source: Otago Daily Times April 09, 2017 21:00 UTC