Maria Di Nezza (a), Anna De Santis (a) & Giuliana D'Addezio (a,b)
(a) National Institute of Geophysics and Volcanology, Via di Vigna Murata, 605, 00143, Rome, Italy.
(b) Director of the Rocca di Papa geophysical museum, Via dell'Osservatorio, 42, 00040, Rocca di Papa, Rome, Italy.
Corresponding author e-mail: maria.dinezza@ingv.it