Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search


Research of the Hikurangi subduction zone continues


The potential threat posed to this region by the Hikurangi subduction zone – New Zealand’s largest boundary fault – is the subject of a major research project.

The Institute of Geological and Nuclear Science (GNS) is carrying out the research jointly with the National Institute of Water and Atmospheric Research (NIWA) and international agencies.

Subduction is where one tectonic plate dives or “subducts” beneath another. Subduction zones cause the world’s largest earthquakes and generate devastating tsunami.

While the Hikurangi subduction zone extends from the Cook Straight to beyond the East Cape, the research is focused here because it is very shallow beneath the coast. This makes it a globally unique place to determine shallow subduction process involved in earthquake and tsunami generation.
The research covers several areas including paleo seismic investigations at Pakarae and the installation of seismograph stations around the East Cape.

Researchers will investigate rock properties along the subduction interface to help determine what controls plate coupling and earthquake slip behaviour.

Also planned is an onshore seismic survey from the coast north of Gisborne to the Bay of Plenty over the 2018-19 summer. This will require drilling several approximately 50m deep seismic shot holes each of which will hold around 350kg of explosives.

During a presentation on the research to Council’s Assets and Infrastructure committee, Dr Stuart Henrys from GNS said the intention of this was to generate seismic waves from explosions and the energy that bounces back from the layers in the earth could also be recorded on seismographs.

Community consultation on this will begin in the coming weeks.

GNS and NIWA have received $6.47million from the Ministry of Business, Innovation and Enterprise to support the research.

Once complete, the findings will improve local earthquake simulation models. The information about Hikurangi margin earthquake sources will inform the pilot development of a real-time tsunami warning system.


© Scoop Media

Parliament Headlines | Politics Headlines | Regional Headlines

Swing States: Gordon Campbell On Why The US Needs MMP

After the bizarre events this week in Helsinki, the world will be hoping and praying that the US midterm elections in November can put a restraining brake on the presidency of Donald Trump.

This may happen, but there’s a highly undemocratic reason why such hopes may be frustrated. More>>


IPCA On 2016 Armed Offenders Response: 'Serious Failings' Put Officers At Risk

The Independent Police Conduct Authority has found that the tactical decision-making and control and command exercised by Police in response to shots fired near Kawerau on 9 March 2016 was highly flawed and placed Police officers at risk. More>>


Mental Health: National Offers Cross-Party Action

National is not prepared to let the Government park the mental health needs of Kiwis while it holds an inquiry, and has offered to work together to improve New Zealand’s mental health services both immediately and longer term, Mental Health spokesperson Matt Doocey says. More>>


Extradited To Deportation: 'Justice Not Served' In Australia Muddle

A number of New Zealanders who have been extradited to Australia to face charges - only to be sent back here or put in immigration detention centres - is concerning, Justice Minister Andrew Little says. More>>

ASMS: Syphilis Deaths Highlight Need For Proper Resourcing

“The heart-wrenching news that babies have died from syphilis underscores yet again the importance of properly funding and resourcing essential health services... This should not be happening in a quality first-world public health care system like New Zealand’s.” More>>


'Don't Mess This Up': Youth Message On Zero Carbon Act

The young New Zealanders credited with driving momentum for a Zero Carbon Act have formally handed over their submission on the proposed law to MPs from the Labour, Green and National parties. More>>





Featured InfoPages