b'AEM 2023Short abstractsThe last five years of Tempest system development knowledge gaps in the understanding of most regional aquifer systems. To address those knowledge gaps, close to Teo B Hage, Eric S Steele and Peter Wolfgram 30 000 line-km of airborne TEM data have been collected in New Zealand for groundwater characterisation over the past Xcalibur Multiphysics, Jandakot, WESTERN AUSTRALIA, Australia five years. GNS is currently involved in five regional projects Over the last five years, TEMPEST development efforts have(Hawkes Bay, Greater Wellington, Northland, Tairwhiti centred around extending bandwidth, improving system(Gisborne) and Southland), working closely with local water geometry measurements, improving the signal processingmanagers and communities. The data interpretation and and making the system more robust, integrating additionalhydrogeological models resulting from those surveys will instruments on the platform, modernising hardware andgreatly improve the understanding of NZs regional aquifers building additional TEMPEST systems. and inform opportunities for economic diversification in increasingly resource pressured environments. Extensive Pioneered by Geoscience Australias AUSAEM project, globalcommunication is undertaken in each region prior to the demand for regional and country scale Airborne EM hassurvey, ensuring engagement and interest of the general increased significantly. The data is being used for a broadpublic. In Northland, the Te Hiku Water Study project is the range of applications, with geophysical mapping to improveresult of an integrated, community-led water management the understanding of geology at regional scale and mappingand economic development plan. The project proposal the thickness and character of the regolith remaining popularwas initially developed by the community and involved use of the data. However, increasingly TEMPEST data is beinga significant level of community engagement. The team used for groundwater resource assessment, evaluation ofmembers advocacy for the project in the community has the effectiveness of in-fill EM in particular areas, and by somebeen a valuable element of building local buy-in to the innovative companies and individuals, to aid in the search forproject. We are looking into expanding the use of SkyTEM critical minerals. to other regions of New Zealand, primarily to help inform water management, but also to subsequently contribute information to researchers in other disciplines (e.g., fault Advances in open-source software for 3Dmapping, coastal depositional processes, geological electromagnetics using SimPEG mapping etc.).Lindsey J Heagy1, Johnathan Kuttai1, Devin Cowan1,Joseph Capriotti1, Seogi Kang2, Dominique Fournier3 andToward Open Science: Introducing the Geophysical Douglas W Oldenburg1 Survey (GS) data standard and GSPy Toolbox1. University of British Columbia, Vancouver, BC, Canada Stephanie R James1, Nathan L Foks2 and Burke J Minsley12. Geophysics, Stanford University, Stanford, California, USA 1. U.S. Geological Survey, Denver, Colorado, United States3. Mira Geoscience, Vancouver, British Columbia, Canada 2. Contracted to U.S. Geological Survey, Inalab Consulting, Denver, Open-source software is increasingly being adopted byColorado, United Statesthe geophysics community. Their emergence has greatlyThe diverse field of geophysics comprises many data formats reduced the time required for students and researchers toand archival conventions, often separated by specialty be able to implement and explore new ideas, and having(e.g., electromagnetic, seismic, potential fields). Airborne new developments implemented in an open-source projectgeophysical methods exemplify this complexity, with critical facilitates technology transfer and collaboration betweenauxiliary information on survey and system parameters, research and commercial organisations. SimPEG is an open- required to fully utilise and understand the data, often source project for geophysical simulations and inversions.detailed separately throughout dense reports. An open, In this abstract, we provide an overview of the capabilitiesportable, self-describing data standard is needed to increase and recent advancements in SimPEG that are relevant to thethe interoperability, comprehensibility, and long-term archival airborne electromagnetics community of geophysical data. Here, we propose a new Geophysical Survey (GS) data standard that uses the NetCDF file format, An overview of SkyTEM surveys in New Zealand: datain conjunction with extensions to the established Climate acquisition, community engagement, and results fromand Forecasts (CF) metadata convention. We have also developed an accompanying open-source Python package, Northland GSPy, to provide methods for producing and interacting Maiwenn Herpe , Thomas Brakenrig , Stewart Cameron , Janewith GS-standardised files. We utilize the advantages of the 1 1 1Frances , Richard Kellett , Ben Pasco , Zara Rawlinson , TusarNetCDF format to attach metadata directly to the data, and 2 3 4 1Sahoo , Rogier Westerhoff , Chris Worts , Jesper Bjergsted ,organise distinct, but related, datasets into groups within 3 1 3 5Nikolaj Fogedand Andrew Kass a hierarchical structure while leveraging the binary format 5 5to produce smaller file sizes. A root survey group contains 1. GNS Science, Taupo, WAIKATO, New Zealand global metadata about the geophysical survey, and all data 2. Saphron Consultancy, Wellington, New Zealand groups are located within the survey. To simplify operations, 3. GNS Science, Wellington, New Zealand data are categorised based on geometry as either tabular 4. Tetra Tech, Christchurch, New Zealand (unstructured) or raster (structured) datasets. Community 5. HydroGeophysics Group, Aarhus, Denmark development and adoption of a NetCDF-based data standard can greatly improve how these complex geophysical datasets While the demand for groundwater has increasedare shared and utilised, increasing the accessibility and impact throughout New Zealand, there are still significantof geophysical surveys.57 PREVIEW AUGUST 2023'