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Story: Engineering on the sea floor

Offshore earthquakes around New Zealand

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Offshore earthquakes around New Zealand

There is a misconception that earthquakes happen mainly on land. In fact, the centre of many of New Zealand’s earthquakes is offshore, and structures that sit on the seabed need to be engineered to withstand intense shaking. This map shows the earthquakes that occurred between 1990 and 1994 off the New Zealand coast.

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Te Ara - The Encyclopedia of New Zealand

Source: GNS Science

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How to cite this page

Keith Lewis, Engineering on the sea floor – A hostile seabed, Te Ara – the Encyclopedia of New Zealand, https://teara.govt.nz/en/map/6630/offshore-earthquakes-around-new-zealand (accessed 4 June 2026).

Story by Keith Lewis, published 2 March 2009.