Full tensor magnetic gradiometry processing and interpretation developments – Part A

Multiple surveys using a Full Tensor Magnetic Gradient (FTGM) signal instrument from IPHT, have been made in Southern Africa. Traditional Fourier domain and minimum least squares residual of the linear differential tensor relationships have been adapted. The result is a full tensor grid representation of the curvature gradients that is coherent and compliant with the physics at all points. Superior anomaly interpretation regarding the full magnetic history and inferences can then be made. There is more directly inferable structural geology in this tensor signal than can be found in a conventional TMI signal.