Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 


Port Hills 3D rockfall study released

Media Release – Friday 26 October

Port Hills 3D rockfall study released

The Canterbury Earthquake Recovery Authority (CERA) has today released the findings of a three-dimensional (3D) rockfall modelling study on the Port Hills.

“CERA commissioned Geovert Ltd to carry out this study, and it was used alongside other investigations and work commissioned by the Christchurch City Council to help give Cabinet the best advice for zoning decisions on the Port Hills, on land affected by rockfall and boulder roll,” said CERA chief executive Roger Sutton.

The 3D modelling used the Hy-Stone programme developed in Europe at the University of Milano-Bicocca, at their Dipartimento di Scienze Geologiche e Geotecnologie’s.

“The 3D model generates many thousands of boulders of varying sizes and then tracks their trajectories, paths and run out distances,” said Mr Sutton.

“The modelled boulder trajectories are what could happen should further boulder fall happen by either natural processes such as large rainfall events, or an earthquake from another direction than those experienced in February and June 2011.

“This information was used, in conjunction with other studies and expert advice, to assess what areas on the Port Hills are potentially impacted by rockfall,” he said.

The areas investigated by the 3D model extended well over 65 square kilometres across the Port Hills.

Mr Sutton said that rockfall was the only hazard considered in the study, and cliff collapse, boulder flux and land movement were not part of the scope.

“It is very important to note that the results of the 3D modelling study are the equivalent of preliminary design level of detail for rock roll mitigation. This study was not intended to be used for detailed design or other rock roll mitigation assessment purposes.”

The study is available here: http://cera.govt.nz/port-hills-3d-rockfall-modelling-report

ENDS

© Scoop Media

 
 
 
 
 
Business Headlines | Sci-Tech Headlines

 

Scoop Business: NZ Dollar Falls To 3-Year Low As Investors Favour Greenback

The New Zealand dollar fell to its lowest in more than three years as investors sold euro and bought US dollars, weakening other currencies against the greenback. More>>

ALSO:

Scoop Business: NZ Govt Operating Deficit Smaller Than Expected

The New Zealand’s government’s operating deficit was smaller than expected in the first five months of the financial year as a clampdown on expenditure managed to offset a shortfall in the tax-take from last month’s forecast. More>>

ALSO:

0.8 Percent Annually:
NZ Inflation Falls Below RBNZ's Target

New Zealand's annual pace of inflation slowed to below the Reserve Bank's target band in the final three months of the year, giving governor Graeme Wheeler more room to keep the benchmark interest rate lower for longer.More>>

ALSO:

NASA, NOAA: Find 2014 Warmest Year In Modern Record

Since 1880, Earth’s average surface temperature has warmed by about 1.4 degrees Fahrenheit (0.8 degrees Celsius), a trend that is largely driven by the increase in carbon dioxide and other human emissions into the planet’s atmosphere. The majority of that warming has occurred in the past three decades. More>>

ALSO:

Scoop Business: New Zealand’s Reserve Bank Named Central Bank Of The Year

The Reserve Bank of New Zealand’s efforts to stifle house price inflation by using new policy tools has seen the institution named Central Bank of the year by Central Banking Publications, a publisher specialising in global central banking practice. More>>

ALSO:

Science Media Centre: Viral Science And Another 'Big Dry'?

"Potentially, if there is no significant rainfall for the next month or so, we could be heading into one of the worst nation-wide droughts we’ve seen for some time," warns NIWA principal climate scientist Dr Andrew Tait. More>>

ALSO:

Get More From Scoop

 
 
Standards New Zealand

Standards New Zealand
 
 
 
 
 
 
 
 
Sci-Tech
Search Scoop  
 
 
Powered by Vodafone
NZ independent news