Geophysical ground measurements, gravity interpolated (overall)

Measurements of gravity can be used to map variations in mass distribution in the Earth's crust. These variations are due to differences in the composition of the bedrock. Geophysical ground measurements, gravity interpolated (overall) contains grid data that illustrates the variations found in Sweden's gravity field, expressed as Bougueranomaly. From point-by-point measurements of gravity throughout Sweden, Bougueranomalier (mGal) has been calculated in the reference field RG82. These have since been gridded with the cell size 500m x 500m. From the grid, co-ordinate Bougueranomalies have been extracted with the same point spacing corresponding to the grid cell size to a csv file.

重力测量可用于绘制地壳内质量分布的变化特征，此类变化由基岩成分的差异所导致。地面地球物理测量中，经整体插值得到的重力数据包含网格数据集，该数据集直观展示了瑞典重力场的变化情况，以布格异常（Bouguer anomaly）作为表征指标。研究团队基于瑞典全境的逐点重力测量结果，在参考场RG82中计算得到了单位为毫伽（mGal）的布格异常值，随后将这些异常值网格化，网格像元尺寸为500米×500米。最后从该网格数据集中提取与网格像元尺寸间距一致的坐标点布格异常值，并将其保存为逗号分隔值（CSV）文件。