b'Geophysics in the surveysNewsGeoscience Australia: NewsWelcome to Geoscience AustraliasFebruary and March of this year. Figure1on the technical standards set by GA (GA) first geophysical update for 2023.and tables that follow this section showfor the acquisition, processing and Working with our State and TerritoryGA-managed survey acquisition-to- supply of airborne total field magnetic partners, we had a very big year forpublishing status as of January 2023. Ofdata, horizontal magnetic gradient acquisition in 2022 with: course, none of this could be possibledata and radiometric (gamma-ray without incredible teams of dedicatedspectrometric) data. It covers everything Close to 100 000 line km of newlyand expert personnel and contractors from requirements on equipment, to acquired AEM data (fixed wing andthank you to all involved. calibrations, quality control checks, rotary), reporting, data formats, through to basic Approximately 57 000 line km ofFollowing are some recent highlightssafety criteria for surveyingairborne magnetics and radiometricsand updates of Geoscience Australia acquired, programmes and releases. It has been compiled in collaboration 84 stations of MT established, with industry experts and peer reviewed 135 stations of passive seismicacross a number of government agency established, and GA technical deed for airbornedata acquirers, to ensure practicality 1256 line km of active seismic splitmagnetics and radiometrics without sacrificing data integrity, safety between deep crustal structuralGeoscience Australias technicalor data transferability. As always though, imaging (1200 km), and high resolutionstandards for airborne magnetic andwe welcome feedback and suggestions 2D reflection seismic to exploreradiometric data has been updatedfor areas that may need additional groundwater resources (56 km). and will be published early in the new- explanation or update.While most of this data has already beenyear; see http://pid.geoscience.gov.au/ The airborne magnetics and radiometrics published, there are some substantialdataset/ga/147457 (available ~ Marchtechnical specifications will be followed releases (particularly for AEM) to follow in2023). This document provides a refreshby an equivalent for airborne gravity and Figure 1.2021-2022 geophysical surveysin progress, released or for release by GA as part of the Exploring for the Future (EFTF) programme and in collaboration with State and Territory agencies. Projects that are partially or wholly funded by state government agencies are identified by the bracketed contributors. Background image of national magnetics compilation (first vertical derivative of the reduced to pole magnetics), Geoscience Australia, 2019 (see http://pid.geoscience.gov.au/dataset/ga/144725).FEBRUARY 2023 PREVIEW 18'