Improvement of the accuracy of calculations in determination of the spatial location of buried geological structures by restricting the Euler-3D deconvolution depth estimation method using combination of Tilt angle derivatives

Local phase filters such as vertical tilt derivative (TDR) and horizontal tilt derivative (TDX) are extensively used to interpret magnetic data. We use two combinations of these filters, namely TDR - TDX and TDR + TDX, to design a constraining mask that guides the Euler deconvolution moving data window. The TDR - TDX filter produces sharp peaks over the centers of the sources, while the TDR + TDX filter generates plateaus over them. Motivated by previous approaches that make use of Laplacian filter or analytic signal to constrain the Euler deconvolution window, we compute the solutions for windows centered at points that (1) have positive values of TDR - TDX and (2) are contained in the plateaus of TDR+ TDX. The use of both criteria improves the selection of source-related points while reducing the number of spurious ones. Our method is tested on synthetic anomalies due to dike-like sources, and also, on field data from an area in southeast of Iran. The experiments show that the use of a constraining mask based on combined tilt filters produces Euler solutions that are more contiguous and less sensitive to noise than the traditional methods.