128 Works

Natural hazards 2018

Catherine Pinal & Maureen A. Coomer

Hikurangi Ocean Bottom Investigation of Tremor and Slow Slip (HOBITSS V)

Daniel H. N. Barker, Laura M. Wallace, K. Woods, M. Savage &
HOBITSS V was a 12-day (6–18 October 2018) Wellington to Wellington R/V Tangaroa voyage (TAN1809). Objectives of TAN1809 were to undertake seafloor geodetic and seismic instrument deployments, recoveries, and surveys offshore the Gisborne, Mahia, and Wairarapa coasts. The seafloor geodetic aims involve using Bottom Pressure Recorders (BPRs) to determine the cm-level vertical movement (upward or downward) of the seafloor during slow slip events and to deploy two new precision transponder arrays to monitor cmlevel horizontal...

Short-term preparation for and response to an impending lava flow: lessons from the June 27th lava flow (2014-2015), Hawaii, USA

S. W. R. Tsang, Jan M. Lindsay & Natalia I. Deligne
On 27 June 2014, a lava flow began erupting from Kīlauea Volcano that eventually threatened the town of Pāhoa, Hawaii, USA. As the lava flow approached town limits, Hawai‘i County Civil Defense led local scientists, government agencies, non-governmental organisations and local businesses in efforts to prepare the town for potential impacts. Key measures included holding at least daily press conferences and weekly community meetings, building three evacuation routes, creating power pole protection structures and building...

CLUES-GW: a simple coupled steady state surface-groundwater model for contaminant transport

Sandy Elliot, Channa Rajanyaka, Jing Yang & Jeremy White
This report presents CLUES-GW, a simple catchment model that provides mean-annual contaminant load estimates in surface water and groundwater. The model was developed by NIWA as part of the SAM (Smart Models for Aquifer Management) research programme, led by GNS Science, which aims to investigate the implications of model simplification for uncertainty and implications for decision-making. CLUES-GW represents an extension of the existing CLUES model —it includes shallow and deep groundwater reservoirs under each surface...

Borehole database for urban geological mapping, southern Auckland area, New Zealand

Matthew P. Hill
This report documents the results of a compilation of geological information from boreholes in the southern Auckland area as part of GNS Science’s urban geological mapping initiative and for Auckland Council. A total of 34,733 geological records from 2,324 boreholes in the southern Auckland area have been compiled into a digital database. Information in the database also includes geotechnical measurements such as those recorded using the Standard Penetration Test and shear vane methods. The borehole...

SLIDE (Wellington): vulnerability of dwellings to landslides (Project No. 16/SP740)

Chris I. Massey, Kristie-Lee Thomas, Andrew B. King, C Singeisen, T Taig & Nick A. Horspool
The aim of this research was to quantify the vulnerability of people and dwellings to the types of landslide hazards affecting Wellington and other parts of New Zealand. This research comprised two main objectives: 1. Investigate what landslide intensity metric(s) best correlate with the different consequences such as economic loss and/or physical damage state; and 2. Develop appropriate correlations/relationships between the preferred hazard intensity metric(s) and consequence type. In this study, vulnerability is defined as...

Tsunami threat level database update: regional sources and tsunami warning text

Aditya R. Gusman, Biljana Lukovic & Baishan Peng
GNS science has recently developed a tsunami threat level database (version 3.00) for tsunami early warning purposes in New Zealand with 723 earthquake scenarios around the Pacific Ocean. Here we extend the database to include a further 275 regional earthquake scenarios in New Hebrides, Tonga, Kermadec, Hikurangi, Puysegur and Hjort source areas. Scenarios now exist down to lower magnitudes for all of these source areas. The method and assumptions used to create threat level maps...

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...

Kinematics of the New Zealand plate boundary: field report on GNSS surveys of the Top of the South Island Network (TOPS2020)

Rory J. A. Hart & Neville G. Palmer
Between January and February 2020, a combined team from GNS Science, Land Information New Zealand (LINZ), Otago University (OU) and Leeds University (LU) re-measured a network of 118 geodetic survey markers using Global Navigation Satellite System (GNSS) methods throughout the Top of the South Island region of New Zealand for monitoring the regional deformation due to tectonic processes. Previous comprehensive GNSS surveys of this region have been carried out by Department of Survey and Land...

New Zealand ShakeOut 2018: tabulated results of a school survey

E. S. Lambie, Julia S. Becker & Maureen A. Coomer
The New Zealand-wide ShakeOut earthquake drills are part of the National CDEM (Civil Defence Emergency Management) Exercise Programme organised and promoted by the Ministry of Civil Defence & Emergency Management (MCDEM). Individuals and groups are encouraged to sign up to ShakeOut online at (www.shakeout.govt.nz) and, on a selected date, practice appropriate actions in response to a potential earthquake (i.e., ‘Drop, Cover and Hold’). Participants are also encouraged to undertake other emergency response planning and exercising,...

Te Ahi Tipua ki Tahorakuri A1 Section 30: science review of the Ohaaki Geothermal Field to inform a hapū economic plan in degraded geothermal environments

Paul A. White, Anya M. Seward, T. Kora & Diane Bradshaw
Ohaaki Geothermal Field is one of the geothermal fields within the Taupō Volcanic Zone that has been used by Ngāti Tahu for centuries providing social, cultural, environmental and economic value to iwi. Ohaki is one of the principal settlements of the Ngāti Tahu iwi who have lived in close association with the Waikato River in permanent and temporary kāinga from Huka Falls west to Orākei Korakō and Pohaturoa, with the river having an important part...

Can GeoNet’s Felt RAPID reports be reliably used to produce rapid earthquake intensity maps?

Tatiana Goded, Jose Moratalla, Silvia Caness, Rand Huso, Maureen A. Coomer, Jonathan Hanson & Sally H. Potter
During the response to a moderate-to-large earthquake in New Zealand, there is a great need for information on the geographical distribution of the damage. Emergency responders and decision makers use this information to prioritise mitigation actions, such as evacuation procedures and building interventions. At present, GeoNet produces only maps with the strong-motion data (in Peak Ground Velocity, Peak Ground Acceleration or Modified Mercalli intensity [MMI]) from the last hour. In addition, for each earthquake, currently...

Kaitiakitanga of geothermal ecosytems through joint scientific and Mātauranga-a-iwi approaches: Waiotapu case study

Robert R. Reeves, M. Phillips, E. Forrest, H. Te Ngaru, Mark P. Simpson, Samantha A. Alcaraz & Nick Macdonald
Geothermal areas are unique environments that can include geothermal surface features, and exhibit unique flora and fauna that has adapted to these environmental conditions. Iwi have a strong historical and contemporary cultural association with geothermal resources, including cooking, bathing, trading and for spiritual purposes. This report integrates geological, geophysical, geothermal surface feature and vegetation data with Ngati Tahu-Ngati Whaoa matauranga into a holistic knowledge-base combining indigenous knowledge and Western science regarding the Waiotapu Geothermal Field...

A geomorphological characterisation of the coastal environment of the West Coast Region, South Island

David J. A. Barrell, Dougal B. Townsend & Tom M FitzGerald
A methodology has been developed for a geomorphological assessment of coastal environments in the West Coast Region. The aim is to provide technical input for the West Coast Regional Council in their work to define the nature and extent of the West Coast coastal environment. In this desktop assessment, 1:250,000-scale geological and topographic map digital datasets were used to derive geomorphological maps as a foundation for interpretations. The resources developed were a nominally 7-km wide...

Development of population models for risk assessment in New Zealand

Finn R. Scheele, Adrian Benson & Nick A. Horspool
Population models are key components for natural hazard risk modelling of human impacts, such as evacuation, casualty estimation or household relocation. Existing models designed for this purpose in New Zealand lack the required details for accurate risk modelling. We propose the development of three population models. The first is a model of households containing demographics of interest. The second is a network model describing the movement of individuals from source (usual residence) to other locations...

Earthquake-induced landslide forecast tool for New Zealand: version 2.0

Chris I. Massey, Biljana Lukovic, Rand Husu, Rob Buxton & Sally H. Potter
This report outlines a prototype earthquake-induced landslide (EIL) forecast tool (Version 2.0) for New Zealand. This tool will produce outputs for the GeoNet landslide duty officers and Geohazard Analysts (within the National Geohazard Monitoring Centre) after a significant earthquake in near-real time – approximately 5–7 minutes after being triggered and based on the speed of the computer used. A ‘tool’ in the context of this report is defined as software written to carry out a...

Agent-based tsunami evacuation modelling of the Wellington CBD

William L. Power, Biljana Lukovic & Xiaoming Wang
The Wellington CBD is at risk from tsunami, which in some cases could arrive as soon as 30 minutes after an earthquake. The primary means for saving lives is to educate the public to self-evacuate from tsunami-prone areas if they feel a long or strong earthquake: “Long or strong, get gone!”. In densely populated areas like the Wellington CBD, Civil Defence and Emergency Management (CDEM) encourage people to evacuate on foot if they can. Mass...

Phase I: Reconnaissance report on landslides caused by the 16-18 July 2021 rainstorm in the Marlborough region

Andrea Wolter, Brenda J. Rosser, Sheng-Lin Lin, Andrew F. Boyes, Dougal B. Townsend, Katie E. Jones & Eunie Choi
An extreme winter storm travelled across New Zealand on the 16th to 18th of July 2021, affecting the Marlborough, Tasman, Nelson, West Coast and Wellington regions. Flooding and landslides resulted in evacuation of numerous communities and damage to transport networks and property in these regions. Multiple roads were closed and houses impacted by landslides, particularly in the Buller River Valley and Marlborough. Following the storm, GNS Science and Marlborough District Council staff completed reconnaissance in...

3D geological model of the Pukekohe urban area [explanatory text]

Katie E. Jones, Dominic P. Strogen & Matt P. Hill

Collection and initial assessment of terrestrial heat flux of the Waiotapu Geothermal Field

Anya M. Seward, Thomas Brakenrig, Nick Macdonald & Jackson Shanks
Between 15 and 22 January 2020, stream flow gauging, water sampling, surface calorimeter and temperature-depth profile measurements were undertaken at Waiotapu Geothermal Field (WGF) as part of a surface heat loss assessment. The data summarised in this report will be used to revise an estimate of heat loss from the WGF. This survey was designed in parallel with an aerial thermal infrared (TIR) survey undertaken over the region on 13 April 2019. Water temperatures, flowrates...

Geothermal hazard and impact review for the Department of Conservation Te Papa Atawhai

Rebecca H. Fitzgerald, Bradley J. Scott, Danielle H. Charlton & Christina R. Magill
The Department of Conservation (DOC) has been undertaking a review of geological-based hazards and the management of those hazards on Public Conservation Lands and Waters. Deligne et al. (2020) reported on Part 6 of this work, which considered eruptive volcanic and geothermal hazards and defined two categories of volcanic or geothermal eruptions. However, the scope of this previous work did not allow the more commonly experienced hazards in geothermal areas to be addressed, and geothermal...

Kinematics of the New Zealand plate boundary: Field report on GNSS surveys of the Taupo Volcanic Zone (TVZ2022)

Rory J. A. Hart & Neville G. Palmer
During February 2022, a team from GNS Science re-measured a network of 45 geodetic survey markers using Global Navigation Satellite System (GNSS) methods throughout the Taupō Volcanic Zone of New Zealand for monitoring the regional deformation due to tectonic processes. Previous comprehensive GNSS surveys of this region have been carried out in 2021 (TVZ 2021 [Hart and Palmer 2022]), 2015, (TVZ 2015 [unpublished]), 2011 (2011TARA-TVZ [unpublished]), 2007 (TVZ 2007 [unpublished]), 2005 (TVZ 2005 [Palmer NP...

Kinematics of the New Zealand plate boundary: field report on GNSS surveys of the Taupō Volcanic Zone and Hauraki Rift (TVZ2021)

Rory J. A. Hart & Neville G. Palmer
During February 2021, a combined team from GNS Science and Land Information New Zealand (LINZ) re-measured a network of 103 geodetic survey markers, using Global Navigation Satellite System (GNSS) methods, throughout the Taupō Volcanic Zone and Hauraki regions of New Zealand for monitoring regional deformation due to tectonic processes. Previous comprehensive GNSS surveys of these regions have been carried out in 2015 (TVZ2015 [unpublished]), 2011 (2011TARA-TVZ [unpublished]), 2007 (TVZ2007 [unpublished]), 2005 (TVZ2005 [Palmer 2005]), 1995...

Effects of saltwater intrusion on groundwater microbial community diversity

Karen M. Houghton, Magali Moreau & Conny Tschritter
Microbial communities in groundwater carry out biochemical processes that are essential ecosystem functions, such as nutrient cycling and removal of contaminants. These processes play an important role in the quality of groundwater used for drinking and irrigation as well as interconnected surface water. The effects of climate change on these communities, e.g. from increasing salt levels from rising sea levels, or from global temperature increases, are unknown. This study used a combination of culture-dependent (growth...

'Geologic Champagne' voyage report R/V Tangaroa TAN2006: 26 June - 17 July 2020, Wellington-Wellington

Ingo A. Pecher, Jess I. T. Hillman, Bryan W. Davy, A. R. Gorman, Suzi Woelz, D. Andrew, L. Boettger, A. Dalbeth, P. Gerring, J. Hoffman, A. Macnaughtan, P. Oluwunmi, W. Quinn, A. Shorrock & M. Tankersley
Tangaroa voyage TAN2006 took place from 26 June – 17 July 2020, with an unscheduled port call in Wellington from 29 June – 1 July due to equipment problems. The voyage objectives focused on geophysical studies of seafloor pockmarks on the Chatham Rise, as well as possible pockmarks and contourite deposits in the Bounty Trough. We acquired ~800 km of 2D seismic data, ~500 km of which were in a dense grid designed for high-resolution...

Registration Year

  • 2022
    36
  • 2021
    37
  • 2020
    21
  • 2019
    32
  • 2010
    2

Resource Types

  • Text
    128

Affiliations

  • GNS Science
    128
  • Victoria University of Wellington
    8
  • University of Otago
    5
  • University of Auckland
    5
  • University of Canterbury
    5
  • National Institute of Water and Atmospheric Research
    5
  • Massey University
    5
  • //ror.org/03vaqfv64:GNS Science
    3
  • Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences
    2
  • The University of Texas at Austin
    1