P904demg

Digital Elevation data record the terrain height variations from the processed point- or line-located data recorded during a geophysical survey. This P904demg is elevation data for the SMMSP - AEM - Billabong Creek, NSW, 2001. This survey was acquired under the project No. 904 for the geological survey of NSW. The grid has a cell size of 0.00042 degrees (approximately 42m). This grid contains the ground elevation relative to the geoid for the SMMSP - AEM - Billabong Creek, NSW, 2001. 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并经处理的点位及线状勘测数据所反映的地形高程变化。本P904demg数据集为2001年新南威尔士州（New South Wales，NSW）比尔邦格溪SMMSP-AEM项目的高程数据。该勘测依托针对新南威尔士州地质调查的第904号项目开展。该网格数据的像元分辨率为0.00042度（约合42米），包含2001年新南威尔士州比尔邦格溪SMMSP-AEM项目区域内相对于大地水准面（geoid）的地面高程，即地球表面任意点位至大地水准面的垂直距离，数据单位为米。经澳大利亚地质调查局（Geoscience Australia，GA）地球物理学家开展质量核验，确保GA发布的最终数据符合预期使用需求。