Team

 

 Specialists in hydrogeology, isotopic sciences, geophysics, computer modelling and groundwater chemistry.

SCameron

Stewart Cameron | Senior Scientist; Head of Department, Hydrogeology
Stewart Cameron is a hydrogeologist with research interests in hydraulics of porous media, rivergroundwater
interaction, groundwater
resource evaluation and denitrification. His special areas of interest include 1) modelling approaches for delineation of groundwater well
capture zones, 2) application of hydrogeological principles for groundwater quantity resource evaluation, and 3) quantifying the hydraulic and
nitrate removal performance of saturated porous carbon media, including effect of temperature. Stewart runs the GNSled Smart Aquifer Characterisation programme and the groundwatersurface water interaction objective of this programme. Read GNS full profile

ALovett

Abigail Lovett | Groundwater Scientist
Abigail is involved with research including use of temperature sensing techniques for investigation of GWSW
interaction and
development of a national aquifer map. Abigail has a range of applied experience including drilling, aquifer testing and analysis, water sampling, GWSW interaction, rainfall recharge and installation of lysimeter monitoring sites. Read GNS full profile

AKmoch

Alex Kmoch | Hydrological Spatial Analyst 

Alex has a background in computer science and worked in the IT industry in Germany for several years. He joined the GNS Science-led EU-NZ cooperative SMART Aquifer Characterisation (SAC) programme to work on his PhD "Context-based Groundwater Data Infrastructure" in the SAC research aim "Data Synthesis and Visualisation". Now he continues this work as Hydrological Spatial Analyst for GNS Science where he develops the SMART Groundwater Portal. Alex research topics include OGC standards and web-services for groundwater data sharing, modelling and 3D/4D interactive geo-scientific visualisation for aquifer characterization in the web. Read GNS full profile

Brioch Hemmings| Groundwater Modeller

Brioch’s work focuses on development, calibration and uncertainty analysis of regional groundwater models, and development of improved modelling techniques. Brioch’s background ranges from microseismic monitoring of petroleum hydrofracture stimulations to exploring the hydrology within and around complex volcanic systems. He has experience collecting hydrological and hydrogeological data and samples, groundwater dating analysis, coupling geophysical and hydrological models, and numerical modelling of hydrothermal and geothermal systems. Read GNS full profile

CMoore

Catherine Moore | Senior Groundwater Scientist
Catherine has a background in hydrogeology and groundwater modelling and specialises in the area of predictive uncertainty and risk
analysis. Her research focus is on the role that these risk based analyses can play in scientificallybased
optimal environmental
management. She has worked in local government, groundwater consultancies and research organisations on a range of groundwater
modelling and analysis projects both in New Zealand and Australia. Catherine leads the Uncertainty Quantification component of the Smart Aquifer Characterisation Programme at GNS. She is also works with ESR and leads the Decision Making Framework component of the Groundwater Assimilative Capacity programme. Read GNS full profile

CDaughney

Chris Daughney | GeochemistModeller; Director, Environment and Materials Division

Chris specialises in aqueous environmental geochemistry. His areas of interest include the chemical evolution of groundwater at the catchment scale and the use of tracer methods for evaluating insitu rates of water rock interaction and calibrating groundwater models. Read GNS full profile

CTschritter

Conny Tschritter | Hydrogeologist, 3D modeller, GIS specialist

Conny is a groundwater scientist at GNS’s Wairakei Research Centre who is interested, for example, in the development of geological 3D models for hydrogeological applications. She has worked on the development of several subregional geological models for the Bay of Plenty, Waikato and Marlborough regions and one of her research interests is the linking of hydraulic properties to 3D distributions of geological and hydrogeological units. Conny is also working on the development of hydrogeological and geological smartphone apps, that include the access to 2D and 3D data directly in the field. Another one of her research interests is the delineation of wellhead protection and capture zones, and she is leading the Capture Zone Objective of the National Groundwater Monitoring Programme (NGMP). Read GNS full profile 

MMoreau

Magali Moreau | Groundwater Geochemist

Magali has a special interest in groundwater quality and protection, as well as groundwater databases (standard, usage, storage, access).
She has been at GNS Science for 5 years, and manages the National Groundwater Monitoring Programme (NGMP) since 2011. She also administers and manages the development and the GNS GGW database since 2009. Read GNS full profile

MKnowling

Matthew Knowling| Groundwater Modeller

Matthew’s work focuses on the use of highly parameterised inversion and uncertainty analysis techniques for model-based environmental decision-making support. He joined the GNS team in 2016, and will be contributing primarily to the "Smart model for Aquifer Management” (SAM) project. Read GNS full profile

MFriedel

Mike Friedel | Groundwater Modeller
Mike’s research goal is to understand the influence of natural and anthropogenic stresses on environmental and earth systems. His research interests are to characterize, predict and quantify uncertainty in processes and responses across spatiotemporal scales using traditional and computationallyintelligent modeling paradigms. Read GNS full profile

MStewart

Mike Stewart | Scientist (contractor), Isotope

Mike uses water flow and tracer information (tritium, stable isotope and chemical) to understand sources, flowpaths and water qualities in catchments and aquifers. He has been a contractor with GNS since 2005. His present research includes collaborative projects in New Zealand and overseas (Australia, USA, Luxembourg, Japan and Spain). Read GNS full profile

MToews

Mike Toews | Scientist, Groundwater Modeller

Mike Toews (pronounced "Taves") is a hydrogeologist with expertise on numerical groundwater modelling using a wide range of software and techniques, including finite element (e.g. FEFLOW), finite difference (e.g. MODFLOW) and analytical element modelling. Research focuses include climate change impacts on groundwater resources, groundwater age distributions, and regional groundwater flow/transport modelling. Other specific interests include GIS, databases, programming/scripting (Python, C++), and geostatistics. Read GNS full profile

PWhite

Paul White | Senior Scientist Hydrogeology, Groundwater Modelling

Paul is a senior scientist in groundwater resources at GNS Science and has worked for 34 years in New Zealand groundwater hydrology with current research including: subregional 3D models of geology, groundwater flow and groundwater use, that area developed to inform regional council water allocation policy decisions; land use, groundwater quality and lake water quality; and the economic drivers of groundwater use. He has appeared as an expert witness in nine environmental hearings associated with groundwater resources and has authored, or coauthored, approximately 60 papers and book chapters (including coediting the book 'Groundwaters of New Zealand'), 106 conference papers and 104 client reports. Read GNS full profile

Rwesterhoff

Rogier Westerhoff | Hydrogeophysicist

Rogier is a geophysicist with a special interest in the development of satellite remote sensing techniques and large-scale (national) models of terrestrial water cycle variables (evapotranspiration, rainfall recharge, groundwater). Rogier has a 0.8 fte appointment at GNS since 2016, and also works for Deltares (The Netherlands).. Read GNS profile

ZRawlinson

Zara Rawlinson | Hydrogeophysicist

Zara has a special interest in the use of geophysics for subsurface imaging and property determination, as well as developing 3D subsurface models. She has been at GNS Science since 2013, and since this time has been the programme manager/administrator for the Smart Aquifer Characterisation research programme and the Geophysics research aim leader within this programme. Read GNS full profile

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Water Dating Research Laboratory

UMorgenstern

Uwe Morgenstern | Team leader isotope hydrogeology and Water Dating Lab.

Groundwater: Groundwater dating; groundwater dynamics (national, regional, and local scale); landuse impact on groundwater quality, source and fate of contaminants (nutrients) in groundwater systems Paleoenvironment: Climate reconstruction from ice cores; cosmogenic isotopes; 32Sidating of sediment archives for the study of anthropogenic impacts. Read GNS full profile

HMartindale

Heather Martindale | Laboratory Technician

Heather joined the water dating team in 2012. Heather is skilled in field data and sample collection, as well as measuring tritium and dissolved gases in waters. Heather's main area of expertise is in the development of the radon technique and its use for measuring groundwater-surface water interaction. In addition to this Heather has built and manages the water dating lab's database. Read GNS full profile

JKaiser

Johannes Kaiser | Laboratory Technician

Johannes has been the primary operator for the extended Accelerator Mass Spectroscopy system in the Isotope Biogeoscience Department at GNS Science for the past 5.5 years and been responsible for tuning the system to measure C-14 and B-10 respectively, data analysis and preventative/reactive maintenance. In August 2015, I shifted to the Water Dating laboratory in the Hydrogeology Department within GNS Science. Read GNS full profile

RvanderRaaij

Rob van der Raaij | Scientist, Water Dating

Rob van der Raaij is an isotope geochemist and has extensive experience in groundwater dating and groundwater quality issues.He specialises in assessment of groundwater residence times for the DWSNZ, calculation of  radiocarbon groundwater ages, and multivariate statistical techniques for analysing groundwater quality data. Read GNS full profile

VTrompetter

Vanessa Trompetter | Principal TechnicianWater Dating Laboratory 

Vanessa has been a technician in the Water Dating lab for over 20 years. She specialises in the tritium analysis technique and oversees the sample flow and analysis for New Zealand and international clients.Vanessa is the Operator of the lab as a Transitional Facility, ensuring MPI biosecurity is met. Vanessa is also the Laboratory QA manager and maintains the QA/QC procedures and calibrations. Read GNS full profile