Glenburgh, Robinson Range, Peak Hill, Nabberu, Stanley, WA, 1972 (P398), magnetic line data

Total magnetic intensity (TMI) data measures variations in the intensity of the Earth's magnetic field caused by the contrasting content of rock-forming minerals in the Earth crust. Magnetic anomalies can be either positive (field stronger than normal) or negative (field weaker) depending on the susceptibility of the rock. The data are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. These line dataset from the Glenburgh, Robinson Range, Peak Hill, Nabberu, Stanley, WA, 1972 survey were acquired in 1972 by the WA Government, and consisted of 58410 line-kilometres of data at 1500m line spacing and 150m terrain clearance.

总磁场强度（Total Magnetic Intensity, TMI）数据用于测量地壳内造岩矿物成分差异所引发的地球磁场强度变化。磁异常可分为正异常（磁场强度高于正常值）与负异常（磁场强度低于正常值），具体取决于岩石的磁化率。本数据集通过标准化流程开展处理，以确保所记录的响应仅源于地下岩石。经处理得到的数据集可通过解译揭示地下地质结构。经处理的数据由GA地球物理学家进行质量核验，以确保GA发布的最终数据符合使用要求。本次所述的测线数据集源自1972年实施的Glenburgh、Robinson Range、Peak Hill、Nabberu、Stanley（西澳大利亚州，Western Australia, WA）区域勘探项目，由西澳大利亚州政府于1972年采集，总测线长度达58410千米，测线间距为1500米，地形离地高度为150米。