36 Works

Total magnetic intensity grid of Taupo Volcanic Zone

Jenny Barretto & Fabio Caratori Tontini
A procedure for merging gridded airborne and shipborne magnetic data over the upper North Island has been formulated using Geosoft scripts. The two main products are an integrated total magnetic intensity (TMI) Geosoft grid with 100 m cell size and UTM 60S projection on the NZGD2000 datum and a master database containing the data from 37 individual surveys and from a TMI regional drape grid created from three regional grids. The integrated grid preserves the...

Empirical and physics-based runout models

Saskia J. de Vilder, Mark-Andre Brideau & Chris I. Massey
The Stability of Land In Dynamic Environments (SLIDE) research project aims to improve the resilience of New Zealand’s buildings and infrastructure through better knowledge of the behaviour of slopes in response to strong earthquake shaking and significant rain events and the development of strategies for more robust remediation approaches. The SLIDE project’s main objectives are: 1.to establish inventories and data relating to slope processes, and 2.to use these data to underpin landslide hazard and risk...

An investigation of surrogate modelling in multi-hazards

Rob Buxton
The aim of this work is to review the use of surrogate modelling in the field of tsunami modelling or similar fields involving complex non-linear systems such as those involving Computational Fluid Dynamics or Partial Differential Equations. This study discuses some of the main concepts in order to add context but the main part of the work concentrates on publications of interest where the abstract and/or conclusions of the publications are quoted directly for accuracy....

New Zealand Paleoseismic Site Database: Data Dictionary

Nicola J. Litchfield
The New Zealand Paleoseismic Site Database (new term, new database) contains paleoseismic data (grouped into Slip Rate, Earthquake [EQ] Timings and Recurrence Interval [RI], and Single-Event Displacement [SED]) collected at specific sites along active faults throughout New Zealand. The database was developed as part of the New Zealand National Seismic Hazard Model 2022 Revision Project (NSHM 2022). The primary purpose is to compile paleoseismic data at specific sites to be used either as inputs into,...

Graph Models and explainable AI

Rob Buxton
This work presents a brief review of different graph models and then discusses how they can be utilised as an approach for Explainable Artificial Intelligence (XAI). XAI is a branch of computer science that is gaining in popularity, as it addresses the fundamental concept of ‘trust in AI’ – in other words, when should users trust outputs from Artificial Intelligence (AI) models? GNS Science has been studying XAI as part of a collaboration with Callaghan...

Critical element concentration in high temperature producing geothermal fluids in New Zealand

Lucjan Sajkowski, Rose E. Turnbull, Patrina Dumaru & Karyne M. Rogers
This review compiles and presents a publicly available database on the chemical composition of geothermal waters from wells and springs in the Taupo Volcanic Zone (TVZ) and Ngawha, New Zealand. The purpose of this review is to collate previously dispersed datasets, to enable the typical geothermal reservoir water compositions at various locations around the TVZ (and Ngawha) to be assessed and compared. In addition to the tabulated chemical data, we summarise several elements that occur...

A wellbeing impact assessment framework for the National Seismic Hazard Model

Patrina Dumaru, Adam P. Martin, Smrithi Talwar, Christina Magill & Matt C. Gerstenberger
This report proposes an approach for assessing the impact (a return on investment) of resilience investments on wellbeing and a framework for assessing the impacts of the National Seismic Hazard Model (NSHM) research programme on wellbeing in New Zealand. The NSHM calculates the likelihood and strength of earthquake shaking across New Zealand to inform the design and standards for infrastructure, land-use planning and risk insurance, which affect wellbeing related to housing, safety and basic services,...

5 March 2021 tsunami in Whangarei: post-tsunami field survey and numerical modelling

Jean H. Roger
The 5 March 2021 tsunami triggered by the Mw 8.1 Raoul Island earthquake propagated on a Pacific-wide scale. Being one of the countries closest to the epicentre, New Zealand issued a tsunami warning which was quickly confirmed by the New Zealand DART network and the coastal tsunami gauges. Preliminary modelling of wave propagation showed that some places in the Northland New Zealand, especially along the east coast of the Whangārei District, could have seen wave...

FAIR Principles applied to high-value geoscience datasets

Maria Mavroeidi & Mark S. Rattenbury
The FAIR Principles outline how digital data can be Findable, Accessible, Interoperable and Reusable. GNS Science has committed to achieving compliance with FAIR Principles for its high-value geoscience datasets. Initial assessment and improvement of FAIR compliance of GNS Science’s eight Nationally Significant Collections and Databases (NSCDs) as well as high-value natural hazards datasets has been undertaken. The Findable principle is largely met by GNS Science’s Dataset Catalogue that links metadata to datasets. The metadata registered...

History of New Zealand pre-digital seismograph stations

G. Paul D. Viskovic & T. M. Wilson
The Geophysics Division of the Department of Scientific and Industrial Research (DSIR) published a historical catalogue of New Zealand seismograph stations that provided metadata on station history and instrument changes (Smith 1981). This invaluable resource comprehensively covered station and instrumental changes for the pre-1980 period but needs additions to cover the subsequent period until 2001 when the last analogue paper recording stations were decommissioned from the network and GeoNet took over management of the sensor...

Registration Year

  • 2022
    36

Resource Types

  • Text
    36

Affiliations

  • GNS Science
    36
  • National Institute of Water and Atmospheric Research
    3
  • Victoria University of Wellington
    2
  • University of Auckland
    2
  • University of Canterbury
    2
  • Columbia University
    1
  • University of Otago
    1
  • Massey University
    1