Depth estimation problems in microgravity survey

Qualitative interpretation is one of the most important missions in geophysical methods, particularly the determination of the shape and depth of disturbing bodies. The characteristics of the gravity field make it difficult to unequivocally determine both of these parameters; therefore, the problem is solved by reducing the shape of the body by means of simple solid figures and on this basis an attempt to estimate their depth. This paper presents an analysis of depth estimation in microgravity surveys. The useful signal-to-error ratio in this survey causes an additional factor influencing the quality of the estimated depths. Werner deconvolution and Extended Euler deconvolution, as the most frequently applied methods, were used to resolving the problem. Based on the Werner method, a processing methodology was developed that minimizes the impact of the error on the calculation results. An algorithm was also created that allows obtaining a depth solution in this method. The results of the Werner method were compared with the results of the Extended Euler method. Tests have shown that despite the relatively high error to amplitude ratio of the anomaly, satisfactory results can be obtained with the appropriate methodology.

Automated summary

This paper analyzes the depth estimation in microgravity surveys and uses methods such as Werner deconvolution and Extended Euler deconvolution to address the problem. A processing methodology developed based on the Werner method minimizes the impact of errors on calculation results, and an algorithm is created to obtain depth solutions in this method. Comparing results from the Werner method with those from the Extended Euler method shows that satisfactory results can be achieved despite relatively high error to amplitude ratios.