P1291B Tanami-King Leopold WA Airborne Gravity Survey 2017

The Tanami–King Leopold survey was part of a collaborative research project between Geoscience Australia (GA) and the Geological Survey of Western Australia. Gravity data was collected at 5 km wavelength resolution with the purpose to help characterise key undercover geological elements of the region. The project area extends approximately from the Balgo Hills region near the border with the Northern Territory through to Derby in the west. The survey was conducted by Thomson Aviation Pty Ltd with a GT-2A gravimeter and managed by GA. A total of 25,869.36 line km of data were acquired over an area of 58,040 km². Survey detailsSurvey Name: Tanami-King Leopold WA airborne gravity survey 2017State/Territory: Western Australia (WA)Datasets Acquired: Airborne gravity Geoscience Australia Project Number: P1291B Acquisition Start Date: June 16, 2017 Acquisition End Date: August 12, 2017 Flight line spacing: 2.5 km Flight line direction: 180deg / NS Tie line spacing: 25km Tie line direction: 270 deg / EWTotal line kilometers: 25,869.36 Nominal terrain clearance (above ground level): 477 m Aircraft type: GippsAero GA-8 AirvanData Acquisition: Thomson Aviation Project Management: Geoscience Australia Quality Control: CMG Operations Pty Ltd and Geoscience Australia Dataset Ownership: GSWA and Geoscience Australia Files included in this downloadThis data package release contains the final survey deliverables received from the contractor Thomson Aviation. Quality control and data processing services were provided by CMG Operations Pty Ltd and peer reviewed by Dr Jack McCubbine (Geoscience Australia). The horizontal datum and projection for all the data are GDA94 and MGA52, respectively. 1. Point-located Data / line dataASCII column XYZ and ASEG-GDF2 format with accompanying description and definition files. 2.Grids Datum: GDA94Projection: MGA52Grid cell size: 500mFormat: ERMapper (.ers)Gravity datum: AAGD07. There are 24 gridded data supplied in ERMapper (.ers) format. The grid cell size is 500 metres. The gravity datum used is AAGD07. 3. Reports • Final survey logistic report delivered to Geoscience Australia by the survey contractor: TNC-TANAMI-FINAL-REPORT.pdf• QC report from the peer reviewer of the data package: Tanami King Leopold QC report.pdf The data from this Tanami King Leopold survey can also be downloaded from the Geological Survey of Western Australia’s MAGIX platform at https://magix.dmirs.wa.gov.au and GeoVIEW.WA web mapping application at https://geoview.dmp.wa.gov.au/GeoView under reference number 71200.

塔纳米-金利奥波德航空重力调查是澳大利亚地质调查局（Geoscience Australia, GA）与西澳大利亚地质调查局合作研究项目的一部分。本次调查采集了波长分辨率为5公里的重力数据，旨在表征该区域关键的隐伏地质要素。
项目区域大致从毗邻北领地边境的巴尔戈山地区向西延伸至德比市。本次调查由汤姆森航空私人有限公司（Thomson Aviation Pty Ltd）使用GT-2A重力仪实施，由澳大利亚地质调查局负责管理。此次调查共获取了25869.36测线公里的数据，覆盖面积达58040平方公里。

## 调查详情
调查名称：2017年西澳大利亚州塔纳米-金利奥波德航空重力调查
所属州/领地：西澳大利亚州（Western Australia, WA）
获取数据集类型：航空重力（airborne gravity）
澳大利亚地质调查局项目编号：P1291B
采集开始日期：2017年6月16日
采集结束日期：2017年8月12日
飞行测线间距：2.5公里
飞行测线方向：180°/南北向
联络测线间距：25公里
联络测线方向：270°/东西向
总测线公里数：25869.36
标称离地高度：477米
机型：GippsAero GA-8 Airvan
数据采集方：汤姆森航空
项目管理方：澳大利亚地质调查局
质量控制方：CMG运营私人有限公司（CMG Operations Pty Ltd）与澳大利亚地质调查局
数据集归属方：西澳大利亚地质调查局与澳大利亚地质调查局

## 本次下载包含的文件
本数据包发布内容包含承包商汤姆森航空提交的最终调查交付成果。CMG运营私人有限公司负责提供质量控制与数据处理服务，相关成果由澳大利亚地质调查局的杰克·麦克卡宾博士（Dr Jack McCubbine）进行同行评审。
所有数据采用的水平基准与投影分别为GDA94与MGA52。
1. 点位定位数据/测线数据
采用ASCII列格式XYZ与ASEG-GDF2格式，并附带配套的说明与定义文件。
2. 格网数据
大地基准：GDA94
投影：MGA52
格网单元尺寸：500米
格式：ERMapper (.ers)
重力基准：AAGD07。本次共提供24份ERMapper (.ers)格式的格网数据，格网单元尺寸为500米，采用AAGD07重力基准。
3. 报告
• 调查承包商提交给澳大利亚地质调查局的最终调查后勤报告：TNC-TANAMI-FINAL-REPORT.pdf
• 数据包同行评审员出具的质量控制报告：Tanami King Leopold QC report.pdf

本次塔纳米-金利奥波德调查的数据还可通过西澳大利亚地质调查局的MAGIX平台（https://magix.dmirs.wa.gov.au）以及GeoVIEW.WA网页地图应用（https://geoview.dmp.wa.gov.au/GeoView）下载，检索编号为71200。