Geologically Driven Geophysical Consulting

Total Field Calculated from Horizontal Gradients (GRAD2TMI)

GRAD2TMI.GX (horizontal gradients to total field) is an Oasis montajTM based GX tool for calculating a total magnetic field grid from two horizontal gradient Hx and Hy grids (Nelson, 1994). There are two advantages for applying this GX to measured horizontal gradient data:

  • highlight anomalies (e.g. kimberlites) with high gradients
  • eliminate the need to collect tie lines thus reducing survey costs

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