Bouguer Anomaly Re-Reduction and Interpretative Remarks of the Phlegraean Fields Caldera Structures (Southern Italy)

Phlegraean Fields is a large, active caldera located in the densely populated westernmost sector of Naples’s Bay (Southern Italy). Several Bouguer anomaly surveys are available for this area with different resolution and accuracy; gravity data derive from integration stations placed below above sea level as develops both onshore offshore. The comparison these maps Digital Elevation Model shows still remaining Terrain Effect hiding shallower deep structure’s signal. This effect has an impact on modelling source’s depth geometry. In research, we apply geologically constrained terrain correction method to higher Free Air dataset study enhance complete reduction. correlation analysis between residual topography allows us assess quality outcomes. results represent improvement anomalies’ isolation clearly show continuous circular-like clustering maxima related geometry rim. minima associated volcano-tectonic depression filled pyroclastic sediment. Furthermore, features alignments overlap fault systems, along which volcanic activity occurred.