TECHNIQUE FOR IMPROVED CONVERGENCE IN ITERATIVE ANALYSIS OF GRAVITY ANOMALY PROFILES

Abstract

Narrow two‐dimensional gravity anomalies are difficult to interpret iteratively by the relatively simple flat‐plate method suggested by Bott (1960) and employed by others. In this report Bott’s formula is modified empirically after a number of iterations have proceeded. The process is repeated until satisfactory convergence is obtained. The results can be applied to other profiles across the anomaly of interest and thus save substantial computer time by requiring fewer iterations. The technique is applied to two Bouguer anomaly profiles. Analysis of adjoining anomaly profile data with similar amplitudes and widths can be used to speed the convergence in the iterative modeling process.