Gisborne would experience particularly strong and long shaking in this scenario due to the different rock types in the area that increase the shaking's intensity and duration. The earthquake rupture continues north and south creating long and strong shaking along the east coast of the North Island. White shows extreme shaking and red shows strong to severe shaking. The scenario is run at double the actual speed and the scale bar shows the level of shaking. The earthquake's rupture begins 70 kilometres off the coast Porangahau, Hawke's Bay at a shallow depth of nine kilometres.Īn earthquake like this would release around 45 times more energy than the 2016 magnitude 7.8 Kaikoura Hurunui earthquake. This scenario is based on a magnitude 8.9 earthquake and shows the potential levels of ground shaking. It is unlikely that a Hikurangi Subduction Zone earthquake and tsunami will happen exactly like this. ![]() It is one of many possible scenarios and does not predict the future. The scenario shows impacts from the earthquake and tsunami for the most effected areas across the North Island's East Coast in New Zealand. The scenario, further developed by GNS Science experts, helps emergency responders to plan and prepare for a magnitude 8.9 earthquake and tsunami on the Hikurangi Subduction Zone which is off the east coast of the North Island. ![]() Leading New Zealand scientists have designed a credible scenario for an earthquake and tsunami on the Hikurangi Subduction Zone.
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