Observation of volcanic tremor at Mt Vesuvius discovered from the analysis of array data.
P–S wave pairs with constant Ts−Tp time permits a precise estimation of the source depth.
The source is located at depth between 5 km and 6.5 km bsl.
Vesuvius tremor has the same spectral contents of VT earthquakes located at the same depth.
Vesuvius tremor is a sequence of low frequency shear failures occurring in a transition zone.