Abstract
The normalized full-gradient (NFG) method is useful for estimating the source position in semi-quantitative gravity interpretations. Several studies using the NFG method to recover source parameters have shown that this method can reliably locate sources but in practice it is difficult to choose the optimal number of harmonics to act as a smooth filter. In this study, a versatile method was developed for determining the optimal number of harmonics for the NFG method. The optimum harmonic number is determined by analyzing two combined curves: the energy ratio curve of the reconstructed anomalies and the depth curve, along with the change in the number of harmonics. This method was tested and compared with the conventional method on synthetic models, with satisfactory results. When applied to real data from a gravity profile normal to the mid-point of an elongated salt wall in the Mississippi Salt Basin, the estimated source position was consistent with seismic information and previous studies.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
