Historic earthquakes


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Extent of shaking, Edgecumbe earthquake, 2 March 1987 (1st of 2)


Extent of shaking, Edgecumbe earthquake, 2 March 1987 (1st of 2)

The Modified Mercalli scale (from 1 to 12) measures earthquakes by the intensity of shaking observed. This map shows the regional variation in shaking from the Edgecumbe earthquake. Maximum shaking intensity of 9 was felt close to the epicentre. Compared to some New Zealand earthquakes, this was relatively small, but it caused considerable industrial damage around Kawerau.

Source: G. L. Downes, Atlas of isoseismal maps of New Zealand earthquakes. Lower Hutt: Institute of Geological and Nuclear Sciences, 1995.

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Te Ara - The Encyclopedia of New Zealand

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