75 Works

Quicker and safer tsunami evacuations through agent-based modelling

William L Power, K Boersen, Kristie-Lee Thomas, L Tilley, Emma E Hudson-Doyle, Lucy C Kaiser, Biljana Lukovic, David W Heron, T M Wilson, Graham S Leonard & David M Johnston
All of Aotearoa New Zealand’s coastline is at risk of tsunami from local sources, those that reach the coast in less than one hour. Some areas in New Zealand are particularly vulnerable to tsunami, given the long distances to safety, and if a tsunami were to occur there may be large numbers of casualties. The primary means for saving lives is to educate the public to immediately self-evacuate tsunami-prone areas if they feel a long...

Measurement of neon in groundwaters for quantification of denitrification in aquifers

Heather Martindale, Rob W Van Der Raaij, Chris J Daughney, Uwe Morgenstern & John Hadfield
Nitrate is the most pervasive contaminant in New Zealand’s groundwaters. Thus, understanding and managing nitrogen loads through New Zealand’s aquifers is vital for maintaining the quality of groundwaters and connected surface waters. Denitrification is a natural process that is mediated by the metabolism of aquifer microorganisms and by which dissolved nitrate is reduced eventually to nitrogen gas. However, the extent of denitrification occurring within New Zealand’s groundwater system is largely unknown, because there has historically...

Integrated 3D petroleum generation, migration and charge modelling in the Kupe-Kapuni region, south-eastern Taranaki Basin

Karsten F Kroeger, Rob H Funnell, M Fohrmann & Matt G Hill
This report presents workflows and results of integrated petroleum systems modelling of the Kupe region in the south-eastern Taranaki Basin. A series of PetroMod™ 3D models have been built for numerical forward modelling of the complex tectonic and sedimentological evolution of the area. The models use a detailed structural and stratigraphic model based on high-resolution grids (100 x 100 m) developed from new reflection seismic data interpretation carried out as part of the GNS 4D...

Classification of New Zealand hydrogeological systems

Magali Moreau, Paul A. White, Frederika Mourot, Zara J. Rawlinson, Conny Tschritter, Stewart G. Cameron & Rogier S. Westerhoff
Digital datasets of New Zealand hydrogeological systems and their boundaries have been developed using a nationally-consistent and transparent methodology. Here, we define hydrogeological systems as geographical areas with broadly-consistent hydrogeological properties, and similar resource pressures and management issues. These systems are represented in two Geographical Information System (GIS) datasets at the 1:250,000 scale, i.e., hydrogeological system polygons and system boundary polylines. The hydrogeological system polygons (1896 in total) include attributes corresponding to mapping levels, i.e.:...

2019 thermal infrared survey of the Waiotapu Geothermal Field

Robert R. Reeves & Fiona Sanders
An aerial thermal infrared (TIR) survey of the Waiotapu Geothermal Field was undertaken on 13 April 2019. Approximately 2260 TIR images were processed and mosaicked to produce a single, 16-bit image with a ground pixel size of approximately 2 m x 2 m (Figure A.1). The purpose of this report is to summarise the method of data collection and present the final TIR image and accompanying brief interpretation. The TIR data is of good quality...

Reference gravity stations

A catalogue of reference gravity stations in New Zealand has been assembled from measurements made since the 1950s using mostly Lacoste and Romberg D- and G-model meters. These data are from the New Zealand Primary Gravity Network and GNS Science gravity stations for measuring secular changes in gravity. In 2004 the observation data were uniformly processed using GNS Science software and tied to gravity base stations in Auckland and Dunedin. The 2004 revised gravity values...

Residual gravity anomalies of the Taupō Volcanic Zone and adjacent region

Vaughan M Stagpoole, Craig A Miller, Thomas Brakenrig, Nick Macdonald & Fabio Caratori Tontini
The 2019 map of residual gravity anomalies of the Taupō Volcanic Zone and adjacent region is an update of the map of Stagpoole and Bibby (1999). An additional 1795 observations have been used in the 2019 compilation, bringing the total to 9189. All data used for the map have been uniformly processed and anomalies calculated using high resolution digital terrain models. The regional gravity field, used to separate the residual gravity anomalies from Bouguer anomalies,...

New Zealand 3D Full Waveform Inversion (NZ3D-FWI) 2017-2018 field acquisition report

R. Bell, M. Gray, J. Morgan, M. Warner, A. Fagereng, L. McNeill, Katie Jacobs, Stuart A. Henrys, Bill Fry, S. Watkins, H. Lacey, Jenny Black, V. Lane, D. Daly, D. Lindsay, N. Bangs, R. Arai, S. Kodaira &
This report documents the acquisition and archiving of a major 3D active-source and passive seismic imaging experiment, NZ3D-FWI. The NZ3D-FWI project aims to image the Hikurangi subduction zone (upper and lower plates and plate boundary fault) along the north Hikurangi margin where shallow slow slip events occur. The primary aim of the project is to collect data optimally to produce high-resolution velocity models using Full-waveform inversion (FWI). The deployment, servicing and collection of the NZ3D-FWI...

Hikurangi Ocean Bottom Investigation of Tremor and Slow Slip (HOBITTS IV)

Laura M. Wallace &
HOBITSS IV was a 12-day (24 June–5 July 2017) Wellington to Wellington R/V Tangaroa voyage (TAN1705). Objectives of TAN1705 were to (1) undertake seafloor geodetic instrument deployments, recoveries, and surveys offshore Gisborne and Mahia, and (2) acquire multicores along the Hikurangi margin and offshore the north-eastern South Island to evaluate the extent of turbidite deposition following the November 2016 Kaikōura earthquake. The seafloor geodetic aims involve using Bottom Pressure Recorders (BPRs) to determine the cm...

Biogeochemical surveys at Ohui and Pine Sinter epithermal Au-Ag prospects, Coromandel, and at Waiotapu Thermal Park, New Zealand

Colin Dunn, Anthony B. Christie & Jenny A. Black
In 2017, biogeochemical surveys were conducted at the Pine Sinter and Ohui Au-Ag prospects located 15 km north of Whangamata near Oputere in the Hauraki Goldfield, Coromandel Volcanic Zone. Foliage from 138 samples of common tree ferns was collected at 117 sample sites (several species from selected sites). In addition, 18 samples of several common plant species were collected from 6 sites around the geothermal pools at Waiotapu, 27 km SSE of Rotorua, in order...

An improved method for separating quartz from rock using pyrophosphoric acid

Robert G. Ditchburn, Benjamin Durrant, R. John Futter, Stephen Mawdelsey & Albert Zondervan

Cruise report, East Coast sea surface slick sampling, 1 - 6 October 2018

Andrew F. Boyes
A sea surface slick sampling survey was undertaken in the southern East Coast region of the North Island, New Zealand, from 1 – 6 October 2018 using the vessel Nereus charted from Star Offshore Service, Napier. In total nine sites were visited and 14 samples (excluding water and air blanks) were collected. The survey used standard slick sampling kits (General Oceanics Teflon Oil Sampling Net). When weather conditions permitted a Phantom 4 Unmanned Aerial Vehicle...

Smart models for aquifer management: TopNet modelling suite

Christian Zammit, Jing Yang, James A. Griffiths & Channa Rajanayaka
This report presents the application of the TopNet model suite as one of the ‘simple’ models considered in the Smart Models for Aquifer Management (SAM) research programme. Led by GNS Science, the SAM programme aimed to investigate the implications of model simplification for uncertainty and water resource management decision-making. Comparison of different models in terms of prediction uncertainty relevant to key decision variables, both pre (‘priori’) and post (‘posteriori’) calibration, has been carried out. Models...

Assessing the uncertainty of water quality and quantity predictions made using complex regional models: Ruamāhanga South case study

Brioch Hemmings, Matthew J. Knowling & 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 complex numerical groundwater model as a tool of assessing the effectiveness of land-use resource management scenarios. The case study focuses on the lower Ruamāhanga catchment, Greater Wellington, NZ (Ruamāhanga South). Scenarios relate to nitrate loading change related to distributed change...

Summary of Kaikoura District Council risk engagement workshop for the proposed review of the district plan

Margaret Kilvington & Wendy S. A. Saunders
Kaikōura District Council (KDC) are undertaking a plan change process for the natural hazards chapter of their district plan, in response to the 2016 earthquake. The earthquake resulted in a number of physical changes within the district, including changes in land levels, landslides, and river channels (and subsequent flooding). With these changed hazard and risk profiles, the KDC are undertaking a process to change the district plan to adopt a risk-based approach, informed by findings...

Impacts of the 2015 eruption of Calbuco volcano on Chilean infrastructure, utilities, agriculture, and health

Josh L. Hayes, Natalia I. Deligne, L. Bertin, R. Calderon, Johnny B. Wardman, Thomas M. Wilson, Graham S. Leonard, Carol Stewart, Kristi L. Wallace & Peter Baxter

Hei koha tū, hei kura huna a papa: a resource characterisation and ancestry of minerals for Ngāti Hako

Mark P. Simpson, P. Clarkin, Anthony B Christie & Diane Bradshaw
Mineral resources have long provided Māori with trading opportunities and growth through innovative developments with those from the Hauraki rohe used and traded by Ngāti Hako; the earliest inhabitants of Hauraki. Basalt from Tahanga was fashioned into adzes and obsidian from Tūhua (Mayor Island) was used as cutting tools; the latter traded throughout New Zealand. Other rocks and minerals from the Hauraki rohe have since become of economic significance (e.g. gold and silver) or are...

Kaikoura Earthquake Short-Term Project: landslide inventory and landslide dam assessments

Chris I Massey, Dougal B Townsend, G. D. Dellow, Biljana Lukovic, Brenda J Rosser, Garth C Archibald, M Villeneuve, J Davidson, Katie E Jones, Regine Morgenstern, Delia T Strong, Barbara M Lyndsell, J Tunnicliffe, Jon M Carey & S McColl
The MW 7.8 14 November 2016 Kaikoura Earthquake generated more than 20,000 mapped landslides and about 200 significant landslide dams. Besides the immediate hazard from the landslides, cracked ground, landslide debris and landslide dams also pose longer-term risk to infrastructure, because if the landslides and debris remobilise and the dams breach, they could generate future debris flows and floods. These in turn, could sever transport routes and further damage infrastructure, adversely impacting the post-earthquake economic...

Field report on GNSS surveys of the Top of the South Island Network in 2018 (TOPS2018)

Rory J.A. Hart & Neville G. Palmer
During a 28-day period between January and April 2018, a combined team from GNS Science and Land Information New Zealand re-measured a network of 108 geodetic survey stations using Global Navigation Satellite System (GNSS) methods throughout the Upper South Island of New Zealand. This Top of the South Island campaign (TOPS2018) covers an area from Cheviot in the south to Cape Farewell in the north and is intended to repeat previous comprehensive GNSS surveys of...

Kinematics of the New Zealand plate boundary: field report on GNSS surveys of the Taranaki Network in 2019 (TARA2019)

Rory J. A. Hart & Neville G. Palmer
Between March and June 2019, a combined team from GNS Science and Land Information New Zealand (LINZ) re-measured a network of 109 geodetic survey markers using Global Navigation Satellite System (GNSS) methods throughout the Taranaki and Manawatu regions of New Zealand for monitoring the regional deformation due to tectonic processes. Included in the survey were 13 sites located in the Te Urewera mountains and Raukumara Peninsula that were observed to complete the requirements for the...

Ohau and Waikawa catchments of the Horowhenua Groundwater Management Zone - groundwater dynamics, source, and hydrochemical processes as inferred from the groundwater tracer data

Uwe Morgenstern, Rob W. van der Raaij, W. Troy Baisden, Mike K. Stewart, Heather Martindale, Abby Matthews & S Collins
Groundwater age, chemistry, gas, and isotope tracers were applied in the Ohau and Waikawa catchments of the Horowhenua Groundwater Management Zone to understand groundwater dynamics, source, and hydrochemical processes. The measurement of river and stream water age provided a detailed understanding of the ability of geologic formations to let rainwater enter into large groundwater systems with large groundwater stores. Groundwater age tracer results allowed for the identification of: groundwater recharge rates; areas of recharge and...

Post-earthquake building functionality and habitability in New Zealand: Survey results

Finn R. Scheele, SR Uma, Tatiana Goded, Maureen A Coomer, Nick A. Horspool & Jose Moratalla
The habitability and functionality of buildings following earthquake events has a significant impact on the recovery process. Understanding the factors that influence levels of post-event habitability and functionality can assist in identifying areas for improvement in risk reduction and resilience and allows for improved modelling of social impacts. We developed an online survey to gather data from individuals that had experienced recent earthquake events in New Zealand. Broadly, questions were asked regarding the following categories:...

Preparation of polished thin sections and double polished fluid inclusion samples

Ben Durrant & Neville Orr
Polished thin sections (PTS) and double-polished fluid inclusion plates (FI plates) are useful tools in the investigation of geological processes. PTS allow both transmitted- and reflectedlight petrographic examination of minerals and microscopic features, while FI plates allow inference of the conditions at the time of mineral formation. The quality of PTS and FI plates is directly related to the quality of information which they provide. This report documents materials and procedures which produce quality PTS...

Quantifying uncertainty within an ecologically-coupled lake hydrodynamic model: Lake Wairarapa case study

Mat Allan
The present study investigated uncertainty within an ecologically coupled 1-D hydrodynamic model of Lake Wairarapa and uncertainty of total chlorophyll a (TCHLA) estimation. This uncertainty was compared and resulted from both model history matching or model parametrization (within lake) and uncertainty generated from inflowing nitrate concentrations derived from prior and posterior catchment modelling. The study indicated that catchment model calibration effort has significant implications for lake modelling uncertainty. The posterior catchment model scenario led to...

TAN1712-1803 voyage report for ocean bottom seismograph recovery in support of seismic surveys (ORCSS 2 and 3): 3D survey offshore East Coast North Island

Richard Kellett, Dan Bassett, R. Arai, K. Obana, Valerie K. Stucker, Stuart A. Henrys, S. R. Davidson, Rory J. Hart, S. Kodaira, T. Maekawa, K. Michailos, S. Mori, Grant A. O'Brien, T. Saijo, I. Terada, N. L. Bangs & R. Bell

Registration Year

  • 2019
    75

Resource Types

  • Text
    68
  • Dataset
    6
  • Data Paper
    1

Affiliations

  • GNS Science
    34
  • //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