68 Works

Te Kura Whenua ki Pukearuhe wānanga completion report

Malcolm J. Arnot, Kyle J. Bland, Hannu C. Seebeck, Richard L. Kellett, Greg H. Browne, Tania Gerrard, Hemi Waitaiki-Curry & Tiaan Bonica-Kururangi
In March 2019, GNS Science and Ngāti Tama, in collaboration with Ngāti Mutunga, led a Te Kura Whenua wānanga at Pukearuhe Marae, Urenui, Taranaki. Te Kura Whenua is a community engagement initiative aimed at creating dialogue and sharing knowledge between scientists and Māori communities on geoscience-related topics, such as climate change, geological hazards and geological resources, and Māori perspectives on the whenua. The two-and-a-half day wānanga involved field-based and hands-on activity-based learning. This report outlines...

Obtaining water level data at Whakarewarewa Geothermal Valley using unmanned aerial vehicle photogrammetry

Nick Macdonald, Robert R. Reeves, Duncan J. Graham & Thomas Brakenrig
Unmanned aerial vehicles (UAVs) offer a novel means of studying dangerous and inaccessible areas. They have the advantage of having the ability to survey large study areas relatively quickly, while utilising a wide array of sensors. Monitoring the water level of geothermal pools is important for providing insight into how fluids may be flowing and interacting between geothermal surface features and shallow groundwater aquifers. Making manual measurements of water levels in geothermal areas can be...

Geothermal gas emission and its impact on hauora and taiao at Whakarewarewa, the Living Village

Agnes Mazot, R. Huata, Diane Bradshaw, Perry K. Davy, B. Millar, J. Warbrick, J. Davis & Andreas Markwitz
This research explores the effect of Hydrogen Sulfide (H2S), a primary geothermal gas and in a certain extent Carbon Dioxide (CO2), has on humans when exposed to extreme environmental conditions. In this report we document and record the traditional histories/Mātauranga concerning the connection between H2S and the hauora (health) of people at the Whakarewarewa Village. An integrated database helped with the integration of technical, scientific and traditional Māori information, and the support of agile knowledge...

Application of the risk-based planning approach in the Bay of Plenty Regional Council Regional Policy Statement

Sarah N Gunnell
The Bay of Plenty region is subject to a wide range of natural hazards, including earthquake, tsunami, volcanic eruption, flood, slope instability, sea level rise, coastal erosion and liquefaction (Bay of Plenty CDEM, 2018). During the development of the now operative Bay of Plenty Regional Policy Statement (BOPRPS) it was recognised that a stronger stance was needed to better manage the risk posed by natural hazards in the region, in particular the potential impacts of...

Principles of project-based engagement

Wendy S. A. Saunders
This guidance has been produced to help researchers from any research programme understand the basic principles and expectations of engagement. It is aimed at researchers with little engagement knowledge or experience and is very general in nature; the level of engagement and amount of planning will be dependent on the scale of the project and its potential impact. Three stages of research and associated engagement activities are presented: During the proposal development and design During...

New Zealand ShakeOut 2018 Observation Evaluation Report: a summary of high-level findings

Emily Lambie, Julia S Becker & Maureen A Coomer
The New Zealand ShakeOut 2018, organised by the Ministry of Civil Defence and Emergency Management (MCDEM), was the latest national earthquake drill to be held in New Zealand. Over 870,000 participants registered to participate in the drill via the ShakeOut website. The drill was held on 18 October 2018 at 9:30 a.m., and participants were encouraged to practice ‘Drop, Cover and Hold’ in response to a potential earthquake. In addition to the drill, other activities...

Uppermost Teurian to lowermost Bortonian foraminiferal biostratigraphy of the Mead Stream section, Clarence River valley, Kaikoura district, New Zealand

C. Percy Strong
This report reviews and revises foraminiferal samples collected over some 3 decades from c. 245 m of the medial Amuri Limestone at Mead Stream, including all the Lower Marl and Upper Limestone, together with adjacent strata of the Lower Limestone and Upper Marl. These strata range from in age from Late Paleocene to Middle Eocene, however, most of the samples are Early Eocene in age. One-hundred and two samples were previously studied, 35 are new...

Assessing the uncertainty of water quality and quantity predictions made using complex regional models: Ruamāhanga North Case Study

Brioch Hemmings, Matthew J Kowling & Catherine R Moore
The Smart models for Aquifer Management research programme aims to explore the utility and implications of using simple numerical models for decision support applications. This report details a case study example of the application of a complex numerical groundwater model as a tool of assessing the effectiveness of land- and water-use scenarios. The case study focuses on the upper Ruamāhanga catchment, Greater Wellington, NZ (Ruamāhanga North). The effect of land- and water-use scenarios are assessed...

Better spatial characterisation of evapotranspiration and rainfall recharge estimates to groundwater using remote sensing multispectral techniques at lysimeter sites

Frederika Mourot, Rogier S. Westerhoff, Nick Macdonald & Stuart G. Cameron
Regional councils have the responsibility to set up allocation limits to protect and ensure the sustainable use of their freshwater resources. An important part of allocation limit setting consists in assessing the amount of recharge to groundwater. Improvement of recharge models and assessments of sustainable allocation limits will become more important in the context of climate change, where more variable rainfall inputs are expected in the future. This study, commissioned by Envirolink for Hawke’s Bay...

Auckland Volcanic Field eruption crisis management decision-making workshop

A. J. Wild, Jan M Lindsay, S. B. Costello, Natalia I. Deligne, A. Doherty, Graham S. Leonard, K. Maxwell, J. Rollin & Tom M. Wilson
Auckland is the largest city in New Zealand with 1.6 million residents. This major metropolitan region is situated upon the Auckland Volcanic Field (AVF), posing a considerable risk to the city’s population and essential services. On 17 December 2018, a workshop jointly run by DEVORA (Determining Volcanic Risk in Auckland) and Auckland Emergency Management (AEM) was held to discuss evacuation decision-support options in the event of a volcanic crisis in Auckland. The workshop brought together...

A quantitative risk-based planning approach for managing life risk from slope instability: Adaptation of the Christchurch District Plan framework

Sarah Gunnell
Following the Canterbury Earthquake Sequence that occurred over 2010–2011, comprehensive geotechnical investigations were undertaken in the Port Hills area of Christchurch. This research allowed the risk to life posed by the most prevalent types of land movement caused by the earthquakes, being rockfall, cliff collapse and other types of mass movement, to be quantified. In a New Zealand first, this quantitative risk assessment methodology has been integrated into the planning framework of the operative Christchurch...

Atlas of siliceous hot spring deposits (sinter) and other silicified surface manifestations in epithermal environmnets

Ayrton R. Hamilton, Kathleen A. Campbell & Diego M. Guido
Sinters, or siliceous hot spring deposits, are the terrestrial surface expressions of predominately low sulphidation epithermal systems. Sinter deposits form at the intersection of the water table and the Earth’s surface, where near-neutral pH alkali-chloride thermal fluids, oversaturated in silica, are expelled and chemically precipitate hydrothermal minerals and amorphous silica on biotic and abiotic surfaces. The silica precipitate has been observed in Archean to present day settings as bedded, erosion-resistant sinter mounds and sheet deposits,...

Potential short-term aftershock sequences of an Alpine Fault earthquake and their ground motion fields

Chris van Houtte & Matthew C. Gerstenberger

Implementation of the GNS Science Canterbury Seismic Hazard Model in OpenQuake

Chris van Houtte & Elizabeth R. Abbott
The Canterbury Seismic Hazard Model (CSHM) quantifies the expected future ground shaking in the Canterbury region, given the initiation of the Canterbury earthquake sequence in 2010. The model comprises a time-dependent background and fault source model, a source model logic tree and a ground motion characterisation logic tree. These logic trees were derived from expert elicitation workshops. The CSHM has been previously implemented in a GNS Science-developed Fortran code, and with the OpenSHA software. This...

Ngāti Hauā Piako: review of information available for freshwater resource management in the Piako River Catchment within Ngāti Hauā rohe

Zara J Rawlinson & L Gardiner
The Ngāti Hauā Piako Programme (NHP) is a collaborative programme between Ngāti Hauā Iwi Trust (Ngāti Hauā) and GNS Science that spans the period from May 2017 to May 2019. NHP aims to facilitate the sharing of resources and knowledge to enable Ngāti Hauā to make informed decisions regarding freshwater resource management in the Piako Catchment, Hauraki. Ngāti Hauā aspires to improve the health and vitality of the Piako River to ensure the mauri of...

Measured section through the boundary stratotype sections of the Arowhanan, Mangaotanean and Teratan stages (Late Cretaceous) in Mangaotane Stream, Raukumara Peninsula, New Zealand

James S. Crampton & Poul Schioler
Mangaotane Stream lies in the Raukumara Ranges, Raukumara Peninsula, North Island, New Zealand. The central part of the stream exposes a c. 1100 m-thick sequence of Late Cretaceous strata that are assigned largely to Karekare Formation. The sequence includes the lower boundary stratotype sections for the Arowhanan, Mangaotanean and Teratan stages of the New Zealand geological timescale (latest Cenomanian to Coniacian stages of the international timescale). The section has been sampled and studied for over...

From rain through river catchment to aquifer: the flow of water through the Wairau hydrologic system

Uwe Morgenstern, P Davidson, Dougal B Townsend, Paul A White, Rob W van der Raaij, Mike K Stewart, Magali Moreau & Chris J Daughney
Groundwater is an important source of water for the Wairau Plain. Concerns about its sustainable yield and contamination from nutrients have prompted several hydrogeological studies over time to better understand the groundwater system. The main aim of this study is the review and consistent interpretation of age-tracer, isotope and chemistry data, collected between 1968 and 2019, to obtain the hydraulic parameters necessary to understand the declining water levels and spring flows and to assess the...

Pre-historic ruptures on 2016 Kaikōura earthquake faults and implications for seismic hazard

Robert L. Langridge, Andy Nicol, David J A Barrell, P Almond, Kate J Clark & Mark W Stirling
The 14 November 2016 Mw 7.8 Kaikōura Earthquake was one of the largest and most complex on-land earthquakes ever observed globally and ruptured at least 14 faults with displacements of >1.5 m. The earthquake ruptured faults progressively from near the epicentre in the southwest on The Humps Fault in the North Canterbury (NCD) domain, northeast into the Marlborough Fault System (MFS) and on to Cape Campbell, including rupture of submarine faults and extensive uplift of...

Interpretation of the 2017 groundwater age tracer and isotope results for the Christchurch aquifer system

Mike K. Stewart & Rob W. van der Raaij
This report interprets the results from groundwater age tracer and isotope measurements in the Christchurch aquifer system in 2017. The study included carbon-14, tritium and trace gases measured at GNS, stable isotopes (oxygen-18 and deuterium), and water chemistry measured at the same time (results given in Appendices 1 and 2). The interpreted mean ages and water sources are compared with results from measurements from each decade between 1976 and 2006 to see how the system...

Tsunami threat level database update

Aditya R. Gusman, Xiaoming Wang, William L. Power, Biljana Lukovic, Christof Mueller & David R. Burbidge
GNS Science had previously developed a tsunami scenario database with threat level maps for New Zealand from earthquake sources around the Pacific Ocean that can be used for tsunami early warning purposes. Here we describe the method and assumptions used to create an updated version of the database. One of the main improvements is that we have greatly increased the number of scenarios in the new database. Scenarios now exist down to lower magnitudes for...

The 23rd January 2019 Cape Kidnappers coastal cliff collapse, Hawke's Bay, New Zealand

Saskia J. de Vilder, G. D. Dellow, Garth C. Archibald & Regine Morgenstern
An approximately 25,500 m³ debris avalanche occurred on the 23rd January 2019 from the coastal cliffs of Cape Kidnappers, Hawke’s Bay. The debris avalanche was observed by multiple bystanders, and seriously injured two tourists. The tourists were walking along the beach, which forms the public accessway to the Gannet Colony at Cape Kidnappers – a popular tourist attraction in the Hawke’s Bay. The cliff collapse occurred within a conglomerate unit located in the upper 50...

Impact of the 2016 Kaikōura earthquake on Wellington CBD apartment residents: results of a survey

Julia S. Becker, Maureen A. Coomer, D Blake, A Rampton, M Newman-Hall, M Van der Velde & David M. Johnston

Registration Year

  • 2019
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Resource Types

  • Text
    68

Affiliations

  • GNS Science
    32
  • //ror.org/03vaqfv64:GNS Science
    5
  • University of Auckland
    2
  • University of Canterbury
    2
  • Massey University
    2
  • Victoria University of Wellington
    1
  • University of Waikato
    1
  • University of Otago
    1
  • National Institute of Water and Atmospheric Research
    1
  • //ror.org/03b94tp07:University of Auckland
    1