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  • 1
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    The interseismic velocity field of the Central Apennine from a dense GPS network (2012)
    Details
    Publication Date: 2017-04-04
    Description: Since 1999 we have repeatedly surveyed the Central Apennines by means of a dense survey style geodetic network (CAGeoNet) consisting in 123 benchmarks distributed in an area of ~180 x 130 km extended from the Tyrrhenian Sea to the Adriatic Sea with an average inter-site distance of 3-5 km. The network is located across the main seismogenic structures of the region, able to generate destructive earthquakes. Here we show the horizontal GPS velocity field of the CaGeoNet and the available continuous GPS (CGPS) stations in this region, that are estimated from their position time series in the time span 1999-2007. Data have been analyzed using Bernese and Gamit software and the two solutions have been rigorously combined to minimize software-dependent systematic errors. We analyze the strain rate field, which shows a region characterized by extension located along the axis of the Apennines chain, with values ranging from 2 to 66 10-9 yr-1 and a relative minimum of 20 10-9 yr-1 located in the L’Aquila basin area. Our velocity field represents an improved estimation of the ongoing elastic inter-seismic deformation of central Apennines in particular of the L’Aquila earthquake of April 6th, 2009 area.
    Description: Published
    Description: 1039-1049
    Description: 3.2. Tettonica attiva
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: JCR Journal
    Description: open
    Keywords: Central Apennines, GPS velocity field, solutions combination, GPS surveys ; 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations ; 04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy ; 04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics ; 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    The INGV-CNT crustal motion map for the Euro-Mediterranean region (2015)
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    Publication Date: 2017-04-04
    Description: Several thousands GPS/GNSS permanent stations, managed by both scientifc and cadastral institutions, are now available on the European plate and its boundaries. Data coming from these stations provide unprecedented spatial and temporal coverage of time-dependent deformation signals essential to understand the fundamental physics that govern tectonic deformation and faulting. The National Earthquake Center (Centro Nazionale Terremoti, CNT) of the National Institute of Geophysics and Volcanology (Istituto Nazionale di Geofisica e Vulcanologia, INGV) in Italy, is the Italian leader institution for the collection, management and scientific analysis of Global Positioning Systems (GPS) measurements. Distinct analysis centers independently and routinely process and analyze data using high-quality geodetic software (Bernese, Gamit, Gipsy) to measure the movements of 〉1000 points spanning the Eurasian plate and its boundaries. The goal of this project is to offer high-quality geodetic products, increase their accessibility to the European scientific community and promote the inter-disciplinary data exchange through a multi-level, user-friendly data gateway. These activities will be performed in strict contact with the GNSS Working Group of the EPOS project (http://www.eposeu.org) that is proposing to integrate, archive and distribute data, metadata and products for available GNSS stations on the European plate.
    Description: Published
    Description: Vienna, Austria
    Description: 2T. Tettonica attiva
    Description: open
    Keywords: GPS velocity field ; 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations ; 04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy ; 04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Poster session
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  • 3
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    MONITORING AND MODELLING HYDROTHERMAL PANAREA SYSTEM (AEOLIAN ISLAND): GPS AND VOLCANOLOGICAL DATA (2008)
    Details
    Publication Date: 2019-10-10
    Description: In November 2002 a submarine gas eruption started offshore 3 Km east of Panarea island (Aeolian Island) on top of a shallow rise of 2.3 km2 surrounded by islets forming a small archipelago. This event has posed new concern on a volcano generally considered extinct. Panarea island and its archipelago (~ 3.3 km2) are the emergent portion of submarine stratovolcano more than 2000 m high and 20 Km across; exhalative activity due to a shallow hydrothermal system is well known since historical times. To monitor and study ground deformation associated with anomalous gas emission, a local GPS network (PANAREA) was designed, set up and measured during time span December 2002 - October 2006. The network consists of nine sites (six constructed after 2002) located on Panarea and on the islets. GPS data analysis was performed combining episodic campaigns of Panarea and other local networks located in the Aeolian area, carried out between 1995 and 2006, and data of continuous European and Italian sites. The results show at Panarea volcano two distinct crustal domains characterized by different kinematics and styles of deformation. The merging of GPS and structural data suggest the relationship among gas vent distribution, submarine volcanological structures and ground deformations. The actual distribution of the estimated strain-rate is consistent with the structural setting.The general subsidence and shortening in the islets area can be interpreted as the response of the surface to the variation of the hydrothermal system reservoir which is progressively reducing its pressure after the gas eruption. A simple first order approach to the modelling of the hydrothermal system is the use of Okada sources.To evaluate the coupled thermo-hydro-mechanical processes going on in Panarea, a two-step model will be implemented. The model first involves the simulation of pore pressure and temperature changes due to fluid circulation. Then the mechanical response of the porous rock is calculated based on the linear theory of poro-elasticity.
    Description: Unpublished
    Description: Reykjavík, Iceland
    Description: 1.3. TTC - Sorveglianza geodetica delle aree vulcaniche attive
    Description: open
    Keywords: GPS, monitoring, Aeolian Islands ; 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations ; 04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Oral presentation
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  • 4
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    Geodetic deformation Across the Central Apennines from GPS Data in the time span 1999-2003 (2005)
    Details
    Publication Date: 2019-11-14
    Description: Abstract During the time span 1999-2003 was set up and repeatedly surveyed a not permanent GPS network located across one of the highest seismic areas of the central Apennines (Italy). The Central Apennine Geodetic Network (CA-GeoNet), extends across Umbria, Abruzzo, Marche and Lazio regions, in an area of ∼180x130 km, from Tyrrhenian to the Adriatic sea. It consists in 125 GPS stations distributed at 3-5 km average grid and includes 7 permanent GPS stations operated by the Italian Space Agency (ASI) and the Istituto Nazionale di Geofisica and Vulcanologia (INGV). With the aim to estimate the active strain rate across this part of the chain, the GPS sites have been located on the main geological units of the area and across the typical basin and range structures, related with the main seismogenic faults. In this paper we show the network and the first results obtained for a subset of 23 stations that have been occupied at least during three repeated campaigns, in the time span 1999-2003. Data analysis, performed by Bernese 4.2 software, shows an extensional rate normal to the chain, in agreement with geological and seismic data. The strain rates in the inner chain are ranging from 12x10-9±11yr-1 to 16x10-9±11yr-1 and from -14x10-9±11yr-1 to -3x10-9±11yr-1. This result provides an improved estimation of the ongoing deformation of this area with respect to previous studies and is in agreement with the style of deformation inferred from seismicity and with the features of the main seismogenic sources from recent geological and seismological investigations.
    Description: Published
    Description: 259-271
    Description: JCR Journal
    Description: open
    Keywords: Geodetic ; Deformation ; Gps ; Apennines ; 04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Format: 2108888 bytes
    Format: application/pdf
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  • 5
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    Siti archeologici costieri di età romana come indicatori delle variazioni del livello del mare: un'applicazione al mare Tirreno (Italia centrale) (2008)
    Details
    Publication Date: 2020-02-24
    Description: Here we show first results from a multidisciplinary research which estimated sea level changes along the Tyrrhenian coastlines, using coastal archaeological sites.
    Description: Published
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: N/A or not JCR
    Description: reserved
    Keywords: Sea level, archaeology, geology, geophysics, modelling, climate change ; 04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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