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IAIN MCGREGOR / Stuff
Derrick Millton talks about massive earthquake damage on his farm. And those famous cows.
The 2016 Kaikōura earthquake was so complex that another similar event was not expected to occur between 5000 and 10,000 years ago
The magnitude 7.8 earthquake is now the focus from a special issue of the Bulletin of the American Seismological Society . The issue, published this week, contains 21 articles on the Kaikōura event.
One of the articles has 47 co-authors, led by Nicola Litchfield, earthquake geologist at GNS Science. He noted that the two dozen faults involved in the quake had break intervals between 300 and 10,000 years ago.
The 2016 earthquake was "a relatively rare event", they said, and felt that a similar event coincided with
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GNS
The earthquake of Kaikōura left great scars
The rupture started near Waiau in northern Canterbury and traveled northeast about 2km per second. He finished off Cape Campbell in Marlborough, covering 174 km in 74 seconds, GNS said in a statement on the Kaikōura problem.
The southwest to northeast direction of the break strongly concentrates the seismic energy to the north. Unusual feature of the earthquake was the distance of the break jumped between faults. Geologists are planning one of many surface breaks in the Kaikōura earthquake in November 2016. "title =" "src =" https://resources.stuff.co.nz/content/dam/images/1 /q/n/6/9/f/image.related.StuffLandscapeSixteenByNine.620×349.1qn48f.png/1530661596126.jpg "class =" photoborder "/>
GNS Science
Geologists draw a map of one of the many surface ruptures. Surface ruptures during the Kaikōura earthquake in November 2016.
The article led by Litchfield shows that about two-thirds of the earthquake energy was released over the 24 faults of surface breakage. The remaining third was on the underlying Hikurangi subduction interface – the border where tectonic plates of the Pacific and Australia meet.
The largest horizontal movement was 12 meters over the Kēkerengū fault, while the largest vertical movement was due to Papatea fault. Along 110 km of coastline, the vertical movement ranges from 2.5 m subsidence to 6.5 m uplift
There was also a small tsunami and tens of thousands of landslides on an area of about 10,000 square kilometers. 1, near Kaikōura "title =" "src =" https://resources.stuff.co.nz/content/dam/images/1/q/n/6/a/0/image.related.StuffLandscapeSixteenByNine.620×349 .1qn48f.png / 1530661596126.jpg "class =" photoborder "/>
GNS Science
Damage to State Highway 1, near Kaikōura
