Total Magnetic Intensity (TMI) image 2015 greyscale
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下载链接：
http://pid.geoscience.gov.au/id/dataset/ga/6
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资源简介：
Total magnetic intensity (TMI) data measures variations in the intensity of the Earth magnetic filed 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. This TMI image is created from the 2015 magnetic grid of the Australian region with a grid cell size of ~3 seconds of arc (approximately 80 m). This image only includes airborne-derived TMI data for onshore and near-offshore continental areas. The image shows the magnetic response of subsurface features with contrasting magnetic susceptibilities. The image can also be used to locate structural features such as dykes
提供机构：
Commonwealth of Australia (Geoscience Australia)
创建时间：
2016-05-31
