Determinnig of Optimum the Length of Profile in Normalized Full Gradient Method

Length of profiles and number of stations for measuring gravity anomalies play an important role in the amount of cost for exploration projects. Also, length of profile relates to estimate of depth to anomalous bodies. Normalized full gradient (NFG) method applied to detect bodies is a special downward continuation of gravity anomaly. This method eliminates the perturbations which appeared during downward continuation when passing through mass depth. In this study, in order to determine the optimum length of profile for measuring gravity effects due to anomalous body, a horizontal cylinder with a known radius and depth have been used to produce synthetic anomalies to calculate NFG values on different profiles. The results show that the length of the profile and dimension of the area should be 13 times greater than the expected depth of the study to determine the depth of anomalous body with the least error.