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
This data set was acquired with a ship-based Magnetometer and Echosounder Sonar during Eltanin expedition ELT17 conducted in 1965 (Chief Scientist: Dr. Merle R. Dawson). These data files are of MGD77
AUSGeoid98 data files contain a 2 minute grid of AUSGeoid98 data covering the Australian region, which you can use to interpolate geoid-ellipsoid separations for the positions...
