Publication Date:
2020-02-24
Description:
We present the INGV (Italian National Institute of Geophysics and Volcanology) geodetic research infrastructure
and related facilities, dedicated to the observation and monitoring of current deformation of the plate boundary
between Africa and Eurasia. The recent increase of continuous GPS (CGPS) stations in the Central Mediterranean
plate boundary zone offers the opportunity to study in detail the present-day kinematics of this actively deforming
region. For answering all the open questions related to this complex area, INGV deployed a permanent, integrated
and real-time monitoring CGPS network (RING) all over Italy. The RING network (http:/ring.gm.ingv.it) is now
constituted by more than 150 stations. All stations have high quality GPS monuments and most of them are
co-located with broadband or very broadband seismometers and strong motion sensors. The RING CGPS sites
acquire at 1Hz and 30s sampling rates (some of them acquire at 10 Hz) and are connected in real-time to the
INGV acquisition centers located in Roma and Grottaminarda. Real-time GPS data are transmitted using different
systems, such as satellite systems, Internet, GPRS/UMTS and wireless networks. The differentiation of data
transmission type and the integration with seismic instruments makes this network one of the most innovative
CGPS networks in Europe. Furthermore, the INGV data acquisition centers acquire, archive and analyze most
of the Italian CGPS stations managed by regional or national data providers (such as local Authorities and
nation-wide industries), integrating more than 350 stations of the CGPS scientific and commercial networks
existing in the Italian region. To manage data acquisition, storage, distribution and access we developed dedicated
facilities including new softwares for data acquisition and a web-based collaborative environment for management
of data and metadata. The GPS analysis is carried out with the three main geodetic-quality softwares used in the
GPS scientific community: Bernese GAMIT an GIPSY-OASIS. The resulting daily solutions are aligned to the
ITRF2005 reference frame. Stable plate reference frames are realized by minimizing the horizontal velocities at
sites on the Eurasia and Nubia plates, respectively. The different software-related solutions consistency RMS is
within 0.3 mm/yr (Avallone et al., 2010). The solutions are then evaluated with regard to the numerous scientific
motivations behind this presentation, ranging from the definition of strain distribution and microplate kinematics
within the plate boundary, to the evaluation of tectonic strain accumulation on active faults. The RING network
is strongly contributing to the definition of GPS velocity field in the Italian region, and now is able to furnish
a newly and up to date view of this actively deforming part of the Nubia-Eurasia plate boundary. INGV is now
aiming to make the RING (and integrated CGPS networks) data and related products publicly available for the
scientific community. We believe that our network represents an important reality in the framework of the EPOS
infrastructure and we strongly support the idea of an European research approach to data sharing among the
scientific community. We will present (a) the current CGPS site distribution, (b) the technological description of
the data acquisition, storage and distribution at INGV centers, (c) the results of CGPS data analysis, and (d) the
planned data access for the scientific community.
Description:
Published
Description:
Vienna, Geophysical Research Abstracts
Vol. 13, EGU2011-8626, 2011
Description:
1.9. Rete GPS nazionale
Description:
3.2. Tettonica attiva
Description:
open
Keywords:
GPS network
;
Italy
;
active deformation
;
infrastructure
;
04. Solid Earth::04.03. Geodesy::04.03.99. General or miscellaneous
;
04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations
;
04. Solid Earth::04.03. Geodesy::04.03.06. Measurements and monitoring
;
04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy
;
04. Solid Earth::04.03. Geodesy::04.03.09. Instruments and techniques
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
Poster session
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