GSNSW Exploration NSW Area J Cobar Nymagee magnetic first vd 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.

总磁场强度数据（Total magnetic intensity data）可表征由地壳中成岩矿物含量差异引发的地球磁场强度变化。该数据集采集自澳大利亚联邦、各州及北领地政府与私营部门开展的航空地球物理调查。