Thursday, June 23, 2016

[Geology2] Slow-slip NZ East Coast earthquake to roll on for weeks



Slow-slip East Coast earthquake to roll on for weeks


Scientists hope to better pinpoint the latest slow-slip event in the Gisborne 'silent earthquake' zone by using GPS stations.
GNS SCIENCE

Scientists hope to better pinpoint the latest slow-slip event in the Gisborne 'silent earthquake' zone by using GPS stations.

Gisborne is in the grip of an earthquake so massive it has the power to move fault lines – but you wouldn't know it.

A "silent earthquake", or slow-slip event, has been building off the coast of Gisborne for about a week, GeoNet seismologist Caroline Little says.

Silent earthquakes are undetectable by humans or by GeoNet's seismographs, but they can move fault lines to the equivalent of a magnitude 5 tremor or more.

Gisborne - a hub of 'silent earthquake' activity - was struck by a normal magnitude 6.8  quake in December 2007, which ...
KENT BLECHYNDEN

Gisborne - a hub of 'silent earthquake' activity - was struck by a normal magnitude 6.8 quake in December 2007, which destroyed buildings across the city.

They can be detected only by using GPS to measure ground movements of just a few millimetres.

http://www.stuff.co.nz/science/81403086/slowslip-east-coast-earthquake-to-roll-on-for-weeks.html
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Posted by: Lin Kerns <linkerns@gmail.com>



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