Anketell (Detailed), WA, 2002 (P1080), magnetic line data, AWAGS levelled

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 Anketell (Detailed), WA, 2002 survey were acquired in 2002 by the WA Government, and consisted of 23340 line-kilometres of data at 150m line spacing and 25m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS.

总磁场强度（Total Magnetic Intensity, TMI）用于测量由地壳内造岩矿物成分差异所引发的地球磁场强度变化。根据岩石的磁化率差异，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）两类。
该数据已通过标准处理流程进行加工，以确保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。
经处理的数据已由GA地球物理学家开展质量核查，确保GA发布的最终数据符合使用要求。
本次安克特维尔（详细版）2002年航次的测线数据集由西澳大利亚州（Western Australia, WA）政府于2002年采集，包含23340测线公里的数据，测线间距为150米，飞行离地高度为25米。
为抑制数据中的长波长分量，研究人员采用全澳航空地球物理调查（Australia-wide Airborne Geophysical Survey, AWAGS）的航空磁测数据作为独立参考数据集，对本次航次数据的基准水平进行统一控制。本次航次采集的数据已基本校准至AWAGS基准体系。