Capel and Faust Basins Marine Magnetic 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 GA302 Capel and Faust Basins MSS survey were acquired in 2006 for Geoscience Australia. This survey acquired a range of pre-competitive geological and geophysical data that included seismic reflection, gravity, magnetic and swath bathymetry measurements, as well as seafloor dredge samples.

总磁强度（Total Magnetic Intensity，TMI）数据测量由地壳中造岩矿物含量差异引起的地球磁场强度变化。磁异常（magnetic anomalies）可根据岩石的磁化率分为正异常（磁场强于正常）或负异常（磁场弱于正常）。数据通过标准方法处理，以确保记录的响应仅源于地下岩石。处理结果生成的数据集可通过解释揭示地下地质结构。处理后的数据由澳大利亚地球科学局（Geoscience Australia）的地球物理学家进行质量检查，以确保该局（GA）发布的最终数据符合用途要求。这些来自GA302卡佩尔与浮士德盆地MSS调查的测线数据集于2006年为澳大利亚地球科学局采集。该调查获取了一系列竞争前的地质和地球物理数据，包括地震反射、重力、磁法和条带测深测量，以及海底拖捞样本。