Gravity Anomaly Grid of the Australian Region - 2009

This grid represents gravity anomalies of the Australian region. The grid combines accurate onshore gravity measurements, with satellite data over the offshore region. The cell values represent simple Bouguer anomalies at a density of 2.67 tonnes per cubic metre onshore and free-air anomalies offshore. The grid cell size is 0.5 minutes of arc, which is equivalent to about 800 metres.

本网格呈现澳大利亚区域的重力异常分布。该网格融合了精准的陆上重力实测数据与海洋区域的卫星探测数据。网格单元的数值对应陆上以2.67吨/立方米为密度计算的简单布格异常（simple Bouguer anomalies），以及海洋区域的自由空气异常（free-air anomalies）。网格单元尺寸为0.5角分，约合800米。