Friuli Regional Deformation Network (FReDNet)

FReDNet (Friuli Regional Deformation Network) is the crustal deformation monitoring system in Friuli Venezia Giulia that the Centre for Seismological Research began developing in 2002, with the installation of the first station (Zuliani et al., 2018; Tunini et al., 2024). In most cases, the Deliverable title here Pag. 7 receivers have been installed in sites that already host the sensors of the OGS seismic network. FReDNet is also part of a broader geodetic survey program of the Adriatic microplate that includes repeating episodic measurements of geodetic points.

FReDNet currently comprises 22 permanent GNSS receivers (GPS+GLONASS+Galileo+Beidou) for geodetic monitoring of crustal deformations in northeastern Italy. It also provides a real-time service for high-precision georeferenced navigation according to differential correction modes (RTK - Real Time Kinematic, and VRS - Virtual Reference Station). The service is freely accessible to public, private, and scientific users (Figure 3). The Network is integrated with the Friuli Venezia Giulia Region's geodetic network (Antonio Marussi network), the National Dynamic Network (RDN) of the Military Geographic Institute (IGM), and the European EUREF Permanent Network (EPN).