Northern Bowen Basin, Qld, 2002 (P759), elevation line data

The Digital Elevation Model represents ground surface topography between points of known elevation. The elevation data was calculated using the altimeters and Global Positioning System (GPS) sensor used for the benefit of airborne magnetic and radiometric data on the same survey. The elevation is the height relative to the Australian Height Datum GDA94 (AUSGEOID09). The processed elevation data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. These line dataset from the Northern Bowen Basin, Qld, 2002 survey were acquired in 2002 by the QLD Government, and consisted of 59476 line-kilometres of data at 400m line spacing and 80m terrain clearance.

数字高程模型（Digital Elevation Model）可表征已知高程点之间的地表地形形态。本次高程数据由同次航空磁测与放射性测量作业中使用的高度计及全球定位系统（Global Positioning System，GPS）传感器计算得到。该高程为相对于澳大利亚高程基准面GDA94（AUSGEOID09）的海拔高度。经处理的高程数据将由GA地球物理学家开展质量核验，以确保GA发布的最终数据符合既定使用需求。本批次测线数据集源自2002年昆士兰州（QLD）北部鲍恩盆地测量项目，由昆士兰州（QLD）政府于2002年采集完成，总数据长度达59476测线千米，测线间距为400米，作业地形离地高度为80米。