摘要：The authors are indebted to P. Briole and G. Nunnari for their enthusiasm towards experimenting withGPS methodology on Mt. Etna since 1988 and for their work on making it a powerful tool for researchand monitoring in volcanology. Sincere thanks are also due to Prof L. Villari for having started theground deformation study on Sicilian volcanoes in the 1970s and for helping carry out the first GPScampaigns. Special thanks are due to M. Bonaccorso for his huge effort in building the initial GPSnetworks and carrying out the GPS measurements in the ‘90s. The authors wish to thank all thecolleagues who participated in one or more of the huge number of measurements carried out toproduce this unique database. Thanks to Mauro Amore for developing a routine for the automaticcontrol and validation of the RINEX headers, to Antonio D’Agostino for his support during the 2013survey and to Ivan Nicolosi for his help in compiling the software. Thanks are due to S. Conway forreviewing the manuscript for language and grammar. The work of S. Fagone and C. Giardina wassupported by the Servizio Civile Nazionale ‘Terra in movimento: monitoraggio geodetico delle aree arischio volcanic e sismico della Sicilia’ 2012/2013 Project. This work has been carried out in theframework of the European FP7-MED-SUV (MEDiterranean SUpersite Volcanoes) project, grantagreement 308665.
