Glengarry Peak Hill Robinson Range Areas ABCD magnetic grid geodetic

Total magnetic intensity data measures variations in the intensity of the Earth's magnetic filed caused by the contrasting content of rock-forming minerals in the Earth's crust. The data are collected on airborne geophysical surveys conducted by Commonwealth, State & NT Governments and the private sector.

总磁强度数据（Total Magnetic Intensity Data）测量地球磁场强度的变化，该变化由地壳中造岩矿物的含量差异引起。这些数据通过澳大利亚联邦政府、各州及北领地政府以及私营部门开展的航空地球物理勘探（airborne geophysical surveys）收集得到。