AusAEM, Western Resources Corridor, Airborne Electromagnetic Survey Blocks. TEMPEST airborne electromagnetic data and GALEI conductivity estimates

AusAEM Western Resources Corridor Survey: Logistics Report, AEM Data, and GALEI conductivity estimates.<br>From May to October 2022, an airborne electromagnetic (AEM) survey was flown over parts of Western Australia, Northern Territory and South Australia. Geoscience Australia commissioned the survey in collaboration with the Geological Surveys of Western Australia (GSWA) and South Australia (GSSA) as part of the Australian Government's Exploring for the Future program and the Western Australian Government's Exploration Incentive Scheme.<br>A total of 58,858 line kilometres of new data were acquired. GA managed all aspects of the acquisition, quality control and processing of the AEM data.<br>The survey was flown by Xcalibur Aviation (Australia) Pty Ltd using its TEMPEST AEM system. The survey was flown in variable line directions and line spacings ranging from 20km to 5km apart. Skytem Australia Pty Ltd also processed the data. This data package includes the acquisition and processing report, the final processed AEM data, and the results of the contractor's conductivity-depth estimates. The data package also contains the results and derived products from a 1D inversion by Geoscience Australia with its own inversion software.<br>Geoscience Australia's Exploring for the Future program provides pre-competitive information to inform decision-making by Government, community and industry on the sustainable development of Australia's mineral, energy and groundwater resources. We are building a national picture of Australia's geology and resource potential by gathering, analysing and interpreting new and existing precompetitive geoscience data and knowledge. This leads to a strong economy, resilient society and sustainable environment for the benefit of all Australians. This includes supporting Australia's transition to a low emissions economy, strong resources and agriculture sectors, and economic opportunities and social benefits for Australia's regional and remote communities. The Exploring for the Future program, which commenced in 2016, is an eight-year, $225m investment by the Australian Government.<br>The survey will become part of the national AusAEM airborne electromagnetic acquisition program, which aims to provide geophysical information to support investigations of the regional geology and groundwater system and better characterise the salinity, recharge and architecture of the aquifers within the upper few hundred metres of the subsurface. It will also provide data to allow for the study of trends in regolith thickness and variability, variations in bedrock conductivity, the conductivity of key bedrock (lithology-related) conductive units under cover; and (d) the groundwater systems of the region at a reconnaissance scale.

AusAEM西部资源走廊调查：后勤报告、航空电磁（airborne electromagnetic, AEM）数据及GALEI电导率估算结果

2022年5月至10月，项目团队在西澳大利亚州、北领地与南澳大利亚州部分区域开展了航空电磁测量作业。澳大利亚地质调查局（Geoscience Australia，简称GA）联合西澳大利亚州地质调查局（Geological Surveys of Western Australia, GSWA）与南澳大利亚州地质调查局（Geological Surveys of South Australia, GSSA）委托开展本次测量，项目隶属于澳大利亚政府“未来勘探”计划及西澳大利亚州政府“勘探激励计划”。

本次作业共获取58858测线公里的全新测量数据，GA负责AEM数据采集、质量控制与处理的全流程工作。

本次测量由Xcalibur航空（澳大利亚）私人有限公司使用其TEMPEST型AEM系统执行。测量采用可变测线方向与间距，测线间距介于20公里至5公里之间；澳大利亚Skytem私人有限公司亦参与了数据处理工作。

本次数据包涵盖采集与处理报告、最终处理后的AEM数据，以及承包商完成的电导率-深度估算结果；同时包含澳大利亚地质调查局使用自研反演软件开展一维（1D）反演得到的结果与衍生产品。

澳大利亚地质调查局的“未来勘探”计划旨在提供预竞争性地质科学信息，为政府、社区与行业在澳大利亚矿产、能源与地下水资源可持续开发方面的决策提供支撑。项目团队通过收集、分析与解读全新及现有预竞争性地质科学数据与相关知识，逐步构建澳大利亚全国性的地质与资源潜力图景。此举旨在打造强劲的经济、富有韧性的社会与可持续的环境，惠及全体澳大利亚民众。该计划支持澳大利亚向低碳排放经济转型，助力资源与农业产业稳健发展，并为澳大利亚偏远地区社区创造经济机遇与社会福祉。

“未来勘探”计划于2016年启动，是澳大利亚政府投入2.25亿澳元开展的为期8年的项目。

本次测量成果将纳入全国AusAEM航空电磁采集计划，该计划旨在提供地球物理信息，支撑区域地质与地下水系统研究，并更好地刻画地下浅层数百米范围内含水层的盐度、补给机制与结构特征。此外，该数据还可用于开展以下研究：风化层厚度变化趋势与差异性、基岩电导率变化、覆盖层下关键基岩（岩性相关）导电单元的电导率特征，以及以踏勘尺度开展区域地下水系统研究。