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  • 1
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    Active tectonics in northern Victoria Land (Antarctica) inferred from the integration of GPS data and geologic setting (2010)
    American Geophysical Union
    Details
    Publication Date: 2010-12-24
    Print ISSN: 0148-0227
    Electronic ISSN: 2156-2202
    Topics: Geosciences
    Published by American Geophysical Union
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    PAPER CURRENT
  • 2
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    Monitoring geodynamic activity in the Victoria Land, East Antarctica: Evidence from GNSS measurements (2017)
    Elsevier
    Details
    Publication Date: 2017-10-01
    Print ISSN: 0264-3707
    Electronic ISSN: 1879-1670
    Topics: Geosciences , Physics
    Published by Elsevier
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    PAPER CURRENT
  • 3
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    Joint geophysical observations of ice stream dynamics (2007)
    Springer
    Details
    Publication Date: 2017-04-04
    Description: Ice streams play a major role in the ice mass balance and in the reckoning of the global sea level; they have therefore been object of wide scientific interest in the last three decades. During the 21st Italian Antarctic Expedition, in the austral summer 2005-06, we deployed a joint seismographic and geodetic network in the area of the David Glacier, Southern Victoria Land. This campaign followed a similar experiment carried out in the same area during the austral summer 2003-04 with the deployment of a seismographic network that recorded significant microseismicity beneath the David Glacier, primarily occurring as a few small clusters. In the latest 2005-06 deployment, 7 seismographic stations and 3 GPS geodetic receivers operated continuously for a period of 3 months (November 2005-early February 2006) in an area of about 100x150 km2 around the David Glacier. We have carried out several analyses using the combined data sets. These included the examination of the temporal evolution in earthquake magnitude and location and also the contemporaneous observation of both seismic activity and surface kinematics of the ice stream to possibly correlate the recorded microseismicity with the movement of the glacier, affected by the Ross Sea tides. Here we present some details of the two temporary networks and preliminary results and implications.
    Description: Submitted
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: open
    Keywords: Ice dynamics ; 02. Cryosphere::02.02. Glaciers::02.02.05. Ice dynamics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: book chapter
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  • 4
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    Last development in plate kinematics determination in Victoria Land (Antarctica) trough VLNDEF Network in Antarctica using Gamit/Globk software (2008)
    Details
    Publication Date: 2017-04-04
    Description: Abstract A semi-permanent GPS network of about 30 vertices: Victoria Land Network for DEFormation control (VLNDEF) has been set up since Austral summer 1998 at Terra Nova Bay (TNB) near Ross Sea in Antarctica. A permanent GPS station TNB1 based on dual frequency Ashtech P-code GPS receiver with a Choke Ring Antenna has been installed on a bedrock monument in October 1998 and has recorded continuously up to the present. The GPS network has been routinely surveyed every two summers using high quality dual frequency GPS receivers; data, metadata and solutions are available to the scientific community at (http://www.geodant.unimore.it). In this paper we present the results of a distributed session approach applied to processing GPS data of the VLNDEF network, and based on Gamit/Globk 10.3 GPS analysis software. An improved reference frame definition was implemented using Globk package in order to compute Antarctic intra-plate residual velocities and to invert the strain field from GPS data in this region.
    Description: Scientific Committee on Antarctic Research (SCAR) International Arctic Science Committee (IASC)
    Description: Published
    Description: St. Petersburg, Russia
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: reserved
    Keywords: Antarctica ; VLNDEF, Network ; Geodynamic ; Geodesy ; GPS ; 01. Atmosphere::01.03. Magnetosphere::01.03.06. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Poster session
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  • 5
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    Adjustment and transformation strategies of ItalPoS Permanent GNSS Network (2009)
    INGV & Editrice Compositori - Bologna
    Details
    Publication Date: 2017-04-04
    Description: A private network of 133 Global Navigation Satellite Systems (GNSS) permanent sites, named ItalPoS (Italian Positioning Service) and uniformly covering the entire Italian territory, was established in April 2006 by the Italian Division of Leica Geosystems S.p.A. This network also involves several GPS stations of the INGV (Italian National Institute of Geophysics and Volcanology) RING (Real-time Integrated National Gps) network and GPS stations from other public and private bodies. Indeed Leica Geosystems contributed with its experience and its products to these networks which currently fulfil the national coverage where there are no ItalPoS stations. For instance, the purpose of the ItalPoS network is mainly GNSS data distribution in terms of real time corrections and RINEX files for the post-processing. In order to compute and distribute to private and scientific users a set of adjusted coordinates of the ItalPoS network in the IGS05 and ETRF89-2000 reference frames, a dataset of RINEX of about 120 GPS permanent sites was created and processed, using the distributed sessions approach, by means of Gamit/Globk 10.3 GPS data processor, also using some SOPAC (Scripps Orbits and Permanent Array Center) and EUREF (European Permanent Network) solutions to improve the reference frame definition and the internal constraints. This paper describes all the strategies adopted to estimate coordinates and velocities of the ItalPoS Network in IGS05 and in ETRF89-2000 reference frames in the whole Italian territory.
    Description: Published
    Description: 182-195
    Description: 1.9. Rete GPS nazionale
    Description: JCR Journal
    Description: open
    Keywords: GNSS Permanent Network ; Adjustment Strategies ; Boucher-Altamimi transformation ; 04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 6
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    Modeling environmental bias and computing velocity field from data of Terra Nova Bay GPS network in Antarctica by means of a quasi-observation processing approach (2007)
    U.S. Geological Survey and The National Academies; USGS OF-2007-1047, Short Research Paper
    Details
    Publication Date: 2017-04-04
    Description: edited by A. K. Cooper and C. R. Raymond et al., USGS Open-File Report 2007–1047
    Description: Abstract A semi-permanent GPS network of about 30 vertices has been installed at Terra Nova Bay (TNB) near Ross Sea in Antarctica. A permanent GPS station TNB1 based on an Ashtech Z-XII dual frequency P-code GPS receiver with ASH700936D_M Choke Ring Antenna has been mounted on a reinforced concrete pillar built on bedrock since October 1998 and has recorded continuously up to the present. The semi-permanent network has been routinely surveyed every summer using high quality dual frequency GPS receivers with 24 hour sessions at 15 sec rate; data, metadata and solutions will be available to the scientific community at (http://www.geodant.unimore.it). We present the results of a distributed session approach applied to processing GPS data of the TNB GPS network, and based on Gamit/Globk 10.2-3 GPS analysis software. The results are in good agreement with other authors' computations and with many of the theoretical models.
    Description: Published
    Description: 1-4
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: N/A or not JCR
    Description: reserved
    Keywords: Global Positioning System ; Antarctica ; Valocity field ; 04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 7
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    Joint Geophysical Observations of Ice Stream Dynamics (2008)
    Springer-Verlag Berlin Heidelberg
    Details
    Publication Date: 2017-04-04
    Description: Ice streams play a major role in the ice mass balance and in the reckoning of the global sea level; they have therefore been object of wide scientific interest in the last three decades. During the 21st Italian Antarctic Expedition, in the austral summer 2005–06, we deployed a joint seismographic and geodetic network in the area of the David Glacier, Southern Victoria Land. This campaign followed a similar experiment carried out in the same area during the austral summer 2003–04 with the deployment of a seismographic network that recorded significant microseismicity beneath the David Glacier, primarily occurring as a few small clusters. In the latest 2005–06 deployment, 7 seismographic stations and 3 GPS geodetic receivers operated continuously for a period of 3 months (November 2005–early February 2006) in an area of about 100×150 km2 around the David Glacier. We have carried out several analyses using the combined data sets. These included the examination of the temporal evolution in earthquake magnitude and location and also the contemporaneous observation of both seismic activity and surface kinematics of the ice stream to possibly correlate the recorded microseismicity with the movement of the glacier, affected by the Ross Sea tides. Unfortunately, a clear correlation between the occurrence of seismic events and the movement of the glacier is not evident. Here we present some details of the two temporary networks and preliminary results and implications.
    Description: Published
    Description: 281-298
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: partially_open
    Keywords: Antarctica ; David Glacier ; Ice Stream ; Glacier dynamics ; 02. Cryosphere::02.02. Glaciers::02.02.05. Ice dynamics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: book chapter
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  • 8
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    Tidal forcing on David Glacier and Drygalski Ice Tongue (2008)
    The National Academy Press, Washington DC
    Details
    Publication Date: 2017-04-04
    Description: During the 2005-06 Austral Summer, we carried out a joint observational campaign in the area of the David Glacier, South Victoria Land, with the aim of collecting simultaneous time series of geodetic and seismological data. We installed 7 temporary seismographic stations on rock outcrops surrounding the glacier and 3 temporary geodetic stations both on flowing ice and on rock. The seismic network registered a significant low-energy seismic activity, principally originated by ice creeping and basal stress at the interface between the ice and the bedrock. The geodetic stations allowed us to survey the glacier kinematics forced by the Ross Sea tides, and to infer the grounding line location. Here we show some details about data analysis and preliminary results.
    Description: Published
    Description: Santa Barbara, California
    Description: 1.8. Osservazioni di geofisica ambientale
    Description: reserved
    Keywords: Antarctica ; David Glacier ; Tidal force ; Geodetic observations ; Seismicity ; 02. Cryosphere::02.02. Glaciers::02.02.05. Ice dynamics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Extended abstract
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  • 9
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    Tidal forcing on David Glacier and Drygalski Ice Tongue (2007)
    U.S. Geological Survey and The National Academies
    Details
    Publication Date: 2017-04-04
    Description: During the 2005-06 Austral Summer, we carried out a joint observational campaign in the area of the David Glacier, South Victoria Land, with the aim of collecting simultaneous time series of geodetic and seismological data. We installed 7 temporary seismographic stations on rock outcrops surrounding the glacier and 3 temporary geodetic stations both on flowing ice and on rock. The seismic network registered a significant low-energy seismic activity, principally originated by ice creeping and basal stress at the interface between the ice and the bedrock. The geodetic stations allowed us to survey the glacier kinematics forced by the Ross Sea tides, and to infer the grounding line location. Here we show some details about data analysis and preliminary results.
    Description: Published
    Description: University of california, Santa Barbara, CA, USA
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: reserved
    Keywords: Tidal forcing ; Ice dymnamics ; Antarctica ; 02. Cryosphere::02.02. Glaciers::02.02.05. Ice dynamics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 10
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    ANTARTIDE. Un osservatorio naturale per comprendere la Terra (2009)
    Details
    Publication Date: 2017-04-04
    Description: Molto è noto delle particolarissime condizioni che rendono l'Antartide un laboratorio veramente speciale per tante discipline. Tuttavia, per le Scienze della Terra il continente antartico ha un doppio interesse. Oltre ad essere un luogo poco conosciuto dove avvengono processi straordinari ed unici per il nostro pianeta, esso occupa anche una posizione privilegiata per la registrazione di dati geofisici. Questi dati sono essenziali per la comprensione globale di molti processi fisici e ci aiutano dunque a capire come la Terra "funziona" nel suo insieme. L'Antartide è, quindi, un luogo di osservazione cruciale per la conoscenza del pianeta in cui viviamo. I processi geofisici presentano variazioni su lunghi periodi. Di conseguenza, la registrazione di lunghe e ininterrotte serie temporali è un impegno basilare per gli osservatori geofisici. Come noi traiamo vantaggio dalle registrazioni della declinazione del campo magnetico fatte dai marinai del XVIII secolo, dalle cronologie degli effetti dei terremoti trovate in archivi storici e dalle informazioni sul tempo e sulle temperature dell'aria scritte negli antichi almanacchi, così dobbiamo impegnarci per acquisire ed allo stesso tempo conservare le registrazioni strumentali secondo i migliori livelli consentiti dalla tecnologia odierna. Seguendo queste considerazioni, il programma antartico Italiano - in modo simile ai programmi di altre nazioni - si sta prodigando in uno sforzo continuo nel mantenimento e nel miglioramento degli osservatori geofisici permanenti. Forse alcune di queste attività non forniscono dati con forte impatto immediato, ma la loro vera importanza si evidenzierà certamente in futuro. Il funzionamento degli osservatori geofisici antartici è anche un obbligo verso le prossime generazioni, per metterle in condizione di comprendere quello che a noi sfugge ancora.
    Description: PNRA
    Description: Published
    Description: 1.7. Osservazioni di alta e media atmosfera
    Description: 3.9. Fisica della magnetosfera, ionosfera e meteorologia spaziale
    Description: open
    Keywords: Antartide ; Osservatori permanenti ; PNRA ; 01. Atmosphere::01.03. Magnetosphere::01.03.99. General or miscellaneous ; 03. Hydrosphere::03.03. Physical::03.03.05. Instruments and techniques ; 05. General::05.02. Data dissemination::05.02.99. General or miscellaneous ; 05. General::05.04. Instrumentation and techniques of general interest::05.04.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
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