38 Works

Geology of the Hyde-Macraes Shear Zone and Waihemo Fault Zone area, northeastern Otago

Adam P. Martin, Belinda Smith Lyttle, A. H. Allibone, H. Blakemore, Simon C. Cox, D. Craw, S. Doyle, Richard L. Kellett, D. J. MacKenzie, Nick Mortimer, T. Ritchie & Tusar R. Sahoo
Geology of the Hyde-Macraes Shear Zone and Waihemo Fault Zone Area is a new 1:50 000 scale geological map of northeastern Otago. The >3000 km2 map area includes the trans-crustal Waihemo Fault Zone, the economically significant Hyde-Macraes Shear Zone in the Otago Schist and the western edge of the Canterbury Basin. The map area is two-thirds onshore and one-third offshore, amalgamated into a seamless geological map (sheet 1) with legend and cross-sections (sheet 2). The...

Review of global practice on data capture tools development, applications and limitations

Sheng-Lin Lin
Rapid and profound changes in the technology used for data acquisition, computing and information management provides a framework that has the potential to allow communities to consider acquiring, analysing and managing data in new ways. Improving the collection and management of data, immediately in post-disaster response and reconnaissance and in long-term impact assessments, is central to enabling knowledge of such events to be used and applied to improve community resilience to future disasters. This report...

Revised stratigraphic framework for the Pliocene to Holocene sedimentary deposits of the Auckland area

David J. A. Barrell, Kyle J. Bland, Matthew P. Hill & Julie M. Lee
Existing terminology for the relatively young and weak sedimentary geological formations of the Auckland area has limited utility for geological and geotechnical classification, because there is considerable variety in their material content. A revised stratigraphic naming framework has been developed for the Pliocene to Holocene sedimentary strata of the Auckland area, in consultation with Auckland geological and geotechnical practitioners. Sedimentary strata previously identified as Tauranga Group and/or its constituent Puketoka Formation in the Auckland area...

SLIDE (Wellington): seismic profiling of Camrose Grove, Wellington

Zane R. Bruce & Hamish Cameron
This report represents an aspect of the ground truthing methods used to confirm the geomorphic mapping carried out as part of the Stability of Land In Dynamic Environments (SLIDE) project within the Wellington Region. A simple hammer plate seismic survey was completed in Camrose Grove, Kingston, Wellington, on an area of fill identified from historical records of US Marine Corps construction in Camrose Grove during WW2. The purpose of the survey is to confirm the...

Landslides and debris flows in the Tasman District caused by ex-Tropical Cyclone Gita, 20-21 February, 2018

Brenda J. Rosser, Jon M. Carey, Katie E. Jones, Dougal B. Townsend & J. F. Crouch
Ex-Tropical Cyclone Gita hit New Zealand on 20–21 February 2018, bringing heavy rain and high winds to much of the country. The heaviest rainfall occurred in the Tasman District where more than 230 mm of rain fell in 18 hours triggering extensive shallow landslides and debris flows. The Takaka Hill Road was closed by 16 slips, which impacted the road for the following year. The most intense rainfall (78 mm/hr) occurred over a 3-hour period...

An updated set of tsunami action maps for Kermadec earthquakes

Aditya R. Gusman, David R. Burbidge & William L. Power
In previous work Gusman et al. (2019) created a new tsunami scenario database containing Tsunami Threat Forecast maps of New Zealand for tsunamis caused by earthquakes around the Pacific Ocean, including the Kermadec subduction zone. The purpose of the database is to rapidly provide a Threat Forecast Map when an earthquake similar to one in the database occurs. The Threat Forecast Maps provide a threat estimate expected in each coastal region around New Zealand from...

Landslides caused by the March 2019 West Coast storm, South Island, New Zealand

Matthew Wride & Saskia J. de Vilder
During the week of 25–31 March 2019, the West Coast of the South Island experienced an intense rainstorm. The rain was widespread, extending from Haast to Hokitika, with the highest intensity of rainfall recorded in the range front south of Hokitika. The March 2019 storm resulted in a record amount of rainfall recorded over a 48-hour period in the Cropp River Catchment. The result of this extreme rainfall event was widespread flooding and landslides, including...

Geological model of South Dunedin

Phil J. Glassey, David J. Barrell, Belinda Smith-Lyttle, S Hornblow & B Mackay
The South Dunedin suburb of Dunedin city lies on a coastal plain, which was a salt marsh prior to urban development, that began in 1840. Now one of the more densely populated areas in New Zealand, South Dunedin is within 2 m of current sea level, has groundwater close to the surface and is vulnerable to flood hazards that are expected to be worsened by sea-level rise. In addition, soft sediments that underlie much of...

Bathymetric map of Lake Rotomahana

Cornel E. J. de Ronde, Fabio Caratori Tontini, S. L. Walker & Jenny Black
This map poster shows a detailed map of the lake floor of Lake Rotomahana at a scale of 1:11 000. As well as the main bathymetric map, there are three smaller maps and two seismic cross sections. These smaller maps show magnetic and heatflow data, and show several hundred locations where plumes of gas bubbles have been recorded. This map shows lake floor features and other subtleties that have not been seen for more than...

Geologic, earthquake and tsunami modelling of the active Cape Egmont Fault Zone

Hannu Seebeck, Glenn P Thrasher, G. P. D. Viskovic, Clarrie Macklin, Suzanne Bull, Xiaoming Wang, Caroline Holden, Yoshihiro Kaneko, V Mouslopoulou & John G. Begg
The Cape Egmont Fault Zone in the southern Taranaki Basin, New Zealand, is a complex series of synthetic and antithetic dip-slip normal faults accommodating present-day extension. The fault zone comprises new and reactivated faults developed over multiple phases of plate boundary deformation during the last 100 Myrs. The fault zone is well imaged on petroleum industry seismic reflection data, with a number of faults exposed and studied onshore. The Cape Egmont Fault Zone is seismically...

ACE Programme – Critical Incident Leadership course learner guide

Hana Craig & Scott Kelly
The seventh batch (2021 intake) of the AHA Centre Executive (ACE) Programme are undertaking the programme online. The Critical Incident Leadership course is one component of the ACE Programme and is facilitated by GNS Science. To deliver the course online, GNS Science will utilise iQualify and Zoom platforms. This document forms a Learner Guide for participants, and sets out the following: Course requirements; Activities needing to be completed before commencing the course; Logging into iQualify,...

West Coast groundwater dynamics and hydrochemical evolution as inferred from regional water age and chemistry tracer data

Magali Moreau, Uwe Morgenstern, Rob W. van der Raaij & J. Horrox
This study aims to holistically describe the flow sources, pathways and lag times of water through the rivers and aquifers of the West Coast catchments. This information is required to ground truth and improve groundwater flow models and management tools. Such improvements will help to prevent degradation of rivers and aquifers from land-use activities that impact on cultural, recreational and economical values, as well as on drinking water supplies and quality. This study is mainly...

Thermal properties of Matahina Ignimbrite

L. McGovern, Fiona Sanders, Michael D. Rosenberg, Anya M. Seward, Isabelle Chambefort & Rob H. Funnell
Thermal properties of a 140 m section of the Matahina Formation ignimbrite were determined from a rock core drilled near Rotorua, New Zealand. For this project, thermal conductivity, thermal diffusivity and specific heat capacity were determined using the divided-bar method in order to investigate interrelationships with density/porosity and lithological variation throughout the unit. Thermal conductivity ranged from 0.25 to 1.44 W/(m.K) for dry samples and 1.06 to 2.18 W/(m.K) for water-saturated samples. Specific heat capacity...

Registration Year

  • 2021
    38

Resource Types

  • Text
    38

Affiliations

  • GNS Science
    37
  • Victoria University of Wellington
    2
  • National Institute of Water and Atmospheric Research
    2
  • University of Otago
    1
  • University of Hawaii at Manoa
    1
  • Callaghan Innovation
    1
  • University of Auckland
    1
  • Massey University
    1