Depth to BasementExtended Euler DeconvolutionExtended Euler Deconvolution is an automated function for determining the depth to source from profiles. It is based on the the paper by Mushayandebvu and others, (2001).
The number of solutions generated are controlled by four parameters. The "Min." and "Max." Depth parameters set the minimum and maximum depth cut-off values. The "Window Length" parameter sets the length of the Extended Euler operator, which is moved across the profile and used for each calculation. The "Max % error" parameter filters out solutions that differ in depth by more than this % when calculated by both Euler and Extended Euler calculations. The Extended Euler calculation routine used in this tool was provided by GETECH™ and is based on the paper by Mushayandebvu and others, (2001). This approach calculates solutions using both the conventional Euler equation, Reid and others, (1990) and the "rotational constraint" equation from Extended Euler. Solving both equations jointly (Extended Euler) gives distance, depth, dip and susceptibility, assuming there is no remnants magnetization. Using conventional Euler gives a second estimate for distance and depth. If the relative difference in depth for the two estimates is less than the Max % error given by the user, the solution is retained; otherwise it is rejected. Extended Euler Deconvolution is a GX function included in the Depth to Basement software extension for Oasis montaj. ReferencesMushayandebvu, M. F., van Driel, P., Reid, A.B., and Fairhead, JD., 2001, Magnetic source parameters of two dimensional structures using extended Euler deconvolution: Geophysics, vol.66, no.3, p814-823 Reid, A.B., Allsop, J.M., Grasner, H., Millet, A.J., and Somerton, I.W., 1990, Magnetic < back |
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The
Extended Euler Deconvolution function calculates the horizontal and vertical
derivative profiles or you may provide your own. If your input profiles are
noisy, you can improve the performance of Extended Euler significantly by
filtering or smoothing the profiles before running Extended Euler. 