Tennant Creek-Mt Isa (TISA) Gravity Surveys, South West McArthur (ground elevation geoid grid)

Digital Elevation data record the terrain height variations from the processed point- or line-located data recorded during a geophysical survey. This Tennant Creek-Mt Isa (TISA) Gravity Surveys, South West McArthur (ground elevation geoid grid) is elevation data for the Tennant Creek-Mt Isa (TISA) Gravity Surveys, South West McArthur Barkley, Northern Territory, 2019. This 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). This grid contains the ground elevation relative to the geoid for the Tennant Creek-Mt Isa (TISA) Gravity Surveys, South West McArthur Barkley, Northern Territory, 2019. It represents the vertical distance from a location on the Earth's surface to the geoid. The data are given in units of meters. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.

数字高程数据（Digital Elevation Data）记录了地球物理勘探过程中采集的经处理点位或线路数据所反映的地形高程变化。本次发布的南麦克阿瑟西南片区坦南特克里克-芒特艾萨（Tennant Creek-Mt Isa，简称TISA）重力勘探地面高程似大地水准面格网（ground elevation geoid grid）数据，为2019年北领地南麦克阿瑟巴克利区域坦南特克里克-芒特艾萨重力勘探项目的高程数据。本数据采集自北领地（NT）与昆士兰州（QLD）编号为201901的地质调查项目。该格网单元尺寸为0.00461度（约合500米）。本格网包含2019年北领地南麦克阿瑟巴克利区域坦南特克里克-芒特艾萨重力勘探项目中相对于似大地水准面（geoid）的地面高程数据，其代表地球表面任意点位至似大地水准面的垂直距离，数据单位为米。经处理的数据已由澳大利亚地质调查局（Geoscience Australia，简称GA）的地球物理学家开展质量检查，以确保GA发布的最终数据符合使用需求。