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The performance of differential point positioning using low-cost GNSS in comparison to DInSAR for monitoring coseismic displacement of the Provenzana-Pernicana fault system (Mt. Etna, 2018 December eruptive phase)

Lookup NU author(s): Dr Max WilkinsonORCiD



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


© 2022 The Author(s). Mt. Etna is a perfect laboratory for testing new approaches and new technologies in a very active geodynamic environment. It offers, in fact, the opportunity for measuring active crustal deformation, related to volcanic activity as well as to seismic faulting on its flanks. In this work, a network of low-cost/low-power Global Navigation Satellite System stations has been installed and tested on Mt. Etna, across a very active fault, the Provenzana-Pernicana system, cutting its north-eastern flank. During the test period, a lateral eruption occurred (starting on 2018 December 24), with a forceful dyke intrusion that stressed all the flanks of the volcano, soliciting all the main faults dissecting the edifice. Also the Provenzana-Pernicana fault system, where this network was recording, was activated during the dyke intrusion, producing a significant seismic swarm. The low-cost/low-power network data analysis allowed the fault slip during the intrusion to be clearly traced in time and space at all the stations lying on the hangingwall mobile block of the fault. All the stations lying south of the fault trace showed an eastward displacement, in very good agreement with the usual kinematics of the fault and the temporal duration of the M 3.5 December 24 earthquake, related to the seaward dislocation of the eastern mobile flank of the volcano, promoted and accelerated by dyke emplacement on the upper part of the edifice.

Publication metadata

Author(s): Wilkinson MW, Bonforte A, Jones RR, Wadsworth FB, Roberts GP, Guglielmino F

Publication type: Article

Publication status: Published

Journal: Geophysical Journal International

Year: 2023

Volume: 234

Issue: 2

Pages: 1012-1023

Print publication date: 01/08/2023

Online publication date: 17/03/2023

Acceptance date: 09/03/2023

Date deposited: 12/06/2023

ISSN (print): 0956-540X

ISSN (electronic): 1365-246X

Publisher: Oxford University Press


DOI: 10.1093/gji/ggad118


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Funder referenceFunder name
Global Challenges Research Fund