King Island mag

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）用于表征由地壳内造岩矿物成分差异所引发的地球磁场强度变化。该数据集由联邦政府、各州及北领地（NT）政府与私营部门开展的航空地球物理勘测采集所得。