Capricorn 2013 AEM TEMPEST® survey

The Capricorn 2013 AEM TEMPEST® survey, conducted as part of the Western Australia Exploration Incentive Scheme and managed by Geoscience Australia on behalf of the Geological Survey of Western Australia (GSWA), is a $2.5 million contribution to the Distal Footprints of Giant Ore Systems: UNCOVER Australia. The Capricorn 2013 AEM survey is Stage 1 of the WA Reconnaissance Airborne Electromagnetic Survey (WARAEM) 2013-20 National Geoscience Agreement project, designed to provide broad-acre, wide line-spacing, airborne electromagnetic (AEM) data over the approximately 70% of the area of Western Australia that is underlain by Precambrian rocks that occur at or within about 300 m of the surface. The Capricorn Orogen is a geologically complex area, the surface expression of which has a surface extent of approximately 240,000 square kilometres (approximately 9 per cent of the area of the State). It is prospective for potentially large discoveries of gold, copper, and other base metals.The Capricorn 2013 AEM TEMPEST data release includes the final contractor supplied (Phase 1) datasets from the TEMPEST® time domain AEM survey as well as a set of GSWA-produced imagery made from the data. The data release package includes:- Point-located, computed B-field EM time-series channel data in ASEG-GDF2 (ASCII) format (also TMI and terrain data)- Point-located computed conductivity and terrain data in ASCII format- Data multiplots (EM x- and z-component time series, CDI sections, TMI, altimeter and monitor channels) in PDF format- CDI stacked sections in PDF format- Gridded data: EM time constant (x- and z-components); selected conductivity-depth slices (in ER Mapper format, 1 km cell size)- Geo-referenced images of gridded EM data in JP2 format- Geo-referenced images of gridded TMI, Ternary Radiometrics, Bouger Gravity and DEM data in JP2 format- Flight path map in ESRI shapefile format- Survey operations report in PDF format- Metadata and License files

本项摩羯座2013年航空电磁（airborne electromagnetic, AEM）TEMPEST®调查，作为西澳大利亚州勘探激励计划的组成部分，由澳大利亚地质调查局代表西澳大利亚州地质调查局（GSWA）负责管理，为《巨型矿床系统的远端痕迹：UNCOVER澳大利亚》项目提供了250万澳元的资助。摩羯座2013年AEM调查是2013-20年度西澳大利亚州航空电磁普查（WA Reconnaissance Airborne Electromagnetic Survey, WARAEM）国家地质科学协议项目的第一阶段，旨在为西澳约70%的出露于地表或埋深不超过300米的前寒武纪岩石分布区域提供广域覆盖、大线距布设的航空电磁数据。摩羯座造山带（Capricorn Orogen）地质构造复杂，其地表出露范围约24万平方千米，约占该州总面积的9%，具备寻找大型金、铜及其他贱金属矿床的勘探潜力。摩羯座2013年AEM TEMPEST®数据发布包包含承包商提交的TEMPEST®时域AEM调查第一阶段最终数据集，以及由GSWA基于该数据制作的一系列影像产品。数据发布包具体内容如下：1. 以ASEG-GDF2（ASCII）格式存储的点位式计算B场电磁时间序列通道数据（同时包含总磁场强度（Total Magnetic Intensity, TMI）与地形数据）；2. 以ASCII格式存储的点位式计算电导率与地形数据；3. 以PDF格式存储的数据多重绘图（电磁x、z分量时间序列、电导率深度成像（Conductivity Depth Imaging, CDI）剖面、TMI、高度计与监测通道数据）；4. 以PDF格式存储的CDI堆叠剖面；5. 网格化数据：电磁时间常数（x、z分量）；选定的电导率-深度切片（采用ER Mapper格式，网格单元尺寸为1千米）；6. 以JP2格式存储的网格化电磁数据地理参考影像；7. 以JP2格式存储的网格化TMI、三元放射性测量、布格重力与数字高程模型（Digital Elevation Model, DEM）数据地理参考影像；8. 以ESRI形状文件格式存储的飞行路径地图；9. 以PDF格式存储的调查作业报告；10. 元数据与许可文件。