3D integrated geophysical modeling for the 2008 magma intrusion at Etna: Constraints on rheology and dike overpressure

摘要: Abstract We present a 3D numerical model based on Finite Element Method (FEM) to jointly evaluate geophysical changes caused by dislocation and overpressure sources in volcanic areas. A coupled problem was solved estimate ground deformation, gravity magnetic produced stress redistribution accompanying magma migration within the volcano edifice. successfully applied integrated procedure image magmatic intrusion occurring northern flank of Etna during onset 2008 eruption. multi-layered crustal structure constrained geological models data considered. Geodetic provide information strain field, while piezomagnetic give constraints field. Therefore, modeling gives insights Mt rheology dike involved propagation improves understanding emplacement sector volcano. Our FEM-based approach reliability model-based inference parameters obtained monitoring lateral intrusions that can prelude an impending