Tennant Creek-Mt Isa (TISA) Gravity Surveys, South West McArthur (CSCBA 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, South West McArthur (CSCBA grid) is a complete spherical cap Bouguer anomaly grid for the Tennant Creek-Mt Isa (TISA) Gravity Surveys, South West McArthur Barkley, Northern Territory, 2019. This gravity survey was acquired under the project No. 201901 for the geological survey of NT, QLD. The grid has a cell size of 0.00461 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.

重力数据用于测量地球浅表下方岩石密度变化引发的微小重力扰动。所采集的数据均经标准流程处理，以确保记录得到的响应仅源自地下岩石的影响。经处理生成的数据集可通过解译，揭示地下地质构造特征。经处理的数据将由GA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。本数据集为2019年北领地西南麦克阿瑟巴克利地区滕南特克里克—芒特艾萨（TISA）重力测量（CSCBA网格）的完整球冠布格异常网格数据。本次重力测量为北领地（NT）与昆士兰州（QLD）地质调查项目编号201901项下所采集。该网格的单元格尺寸为0.00461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（gu）。为生成该网格，本次调查共采集了5855个重力测点。