Tennant Creek-Mt Isa (TISA) Gravity Surveys, Tennant East (SCBA grid)

Gravity data measure small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.This Tennant Creek-Mt Isa (TISA) Gravity Surveys, Tennant East (SCBA grid) is a complete Bouguer anomaly grid for the Tennant Creek-Mt Isa (TISA) Gravity Surveys, South West McArthur Barkley, Northern Territory, 2019 survey. This gravity survey was acquired under the project No. 201901 for the geological survey of NT, QLD. The grid has a cell size of 0.00464 degrees (approximately 500m). The data are given in units of um/s^2, also known as 'gravity units', or gu. A total of 5855 gravity stations were acquired to produce this grid.

重力数据（Gravity data）用于测量地球表层下方岩石密度变化引发的微小重力变化。所采集的数据需通过标准流程处理，以确保记录的响应仅源于地下岩石的影响。经处理得到的数据集可通过解译揭示地下地质构造。经处理的数据需由澳大利亚地质调查局（Geoscience Australia，GA）的地球物理学家开展质量核查，以确保GA发布的最终数据符合使用要求。
本次田南特克里克-芒特艾萨（Tennant Creek-Mt Isa，TISA）重力调查——田南特东区（SCBA网格）数据集，为2019年北领地（Northern Territory，NT）西南麦克阿瑟-巴克利地区田南特克里克-芒特艾萨（TISA）重力调查的完整布格异常（Bouguer anomaly）网格。本次重力调查为北领地、昆士兰州（Queensland，QLD）地质调查项目编号201901项下的采集工作。该网格的单元格尺寸为0.00464度（约合500米），数据单位为微米每二次方秒（μm/s²），亦称为‘重力单位（gravity units，gu）’。为生成该网格，本次调查共采集了5855个重力测点。