Very shallow dyke intrusion and potential slope failure imaged by ground deformation: The 28 December 2014 eruption on Mount Etna

A rare instance of very shallow dyke intrusion beneath Mount Etna's New Southeast Crater, accompanied by potential slope failure, was captured during the 28 December 2014 eruption. Ground deformation patterns, including local displacements and synthetic aperture radar (DInSAR) data, revealed a complex interaction between magmatic intrusion and gravitational instability on the volcano's upper eastern side. While GPS and DInSAR analyses identified a NE-SW oriented intrusion beneath the crater, the observed deformation could not be fully explained by this model alone, suggesting an additional slope failure component. This study highlights the dynamic interplay between magmatic processes and structural instability in volcanic systems.

Bonforte, A., & Guglielmino, F. (2015). Very shallow dyke intrusion and potential slope failure imaged by ground deformation: The 28 December 2014 eruption on Mount Etna. Geophysical Research Letters, 42(8), 2727–2733. Portico. https://doi.org/10.1002/2015gl063462