New geodetic and gravimetric maps to infer geodynamics of antarctica with insights on Victoria land
In order to make inferences on the geodynamics of Antarctica, geodetic and gravimetric maps derived from past and new observations can be used. This paper provides new insights into the geodynamics of Antarctica by integrating data at regional and continental scales. In particular, signatures of geo...
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ftunivroma3iris:oai:iris.uniroma3.it:11590/350895 2024-02-27T08:33:31+00:00 New geodetic and gravimetric maps to infer geodynamics of antarctica with insights on Victoria land Zanutta, Antonio Negusini, Monia Vittuari, Luca Martelli, Leonardo Cianfarra, Paola Salvini, Francesco MANCINI, FRANCESCO MARIA Sterzai, Paolo Dubbini, Marco Capra, Alessandro Zanutta, Antonio Negusini, Monia Vittuari, Luca Martelli, Leonardo Cianfarra, Paola Salvini, Francesco Mancini, FRANCESCO MARIA Sterzai, Paolo Dubbini, Marco Capra, Alessandro 2018 http://hdl.handle.net/11590/350895 https://doi.org/10.3390/rs10101608 https://www.mdpi.com/2072-4292/10/10/1608/pdf eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000448555800108 volume:10 issue:10 firstpage:1608 journal:REMOTE SENSING http://hdl.handle.net/11590/350895 doi:10.3390/rs10101608 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85055443038 https://www.mdpi.com/2072-4292/10/10/1608/pdf Antarctica geodynamic Crustal deformation GNSS time serie Gravity anomaly Neo-tectonic PNRA VLNDEF Earth and Planetary Sciences (all) info:eu-repo/semantics/article 2018 ftunivroma3iris https://doi.org/10.3390/rs10101608 2024-01-31T17:40:00Z In order to make inferences on the geodynamics of Antarctica, geodetic and gravimetric maps derived from past and new observations can be used. This paper provides new insights into the geodynamics of Antarctica by integrating data at regional and continental scales. In particular, signatures of geodynamic activity at a regional extent have been investigated in Victoria Land (VL, Antarctica) by means of Global Navigation Satellite System (GNSS) permanent station observations, data from the VLNDEF (Victoria Land Network for Deformation control) discontinuous network, and gravity station measurements. At the continental scale, episodic GNSS observations on VLNDEF sites collected for 20 years, together with continuous data from the International GNSS Service (IGS) and Polar Earth Observing Network (POLENET) sites, were processed, and the Euler pole position assessed with the angular velocity of the Antarctic plate. Both the Bouguer and the free-air gravity anomaly maps were obtained by integrating the available open-access geophysics dataset, and a compilation of 180 gravity measurements collected in the VL within the Italian National Program for Antarctic Research (PNRA) activities. As a result, new evidence has been detected at regional and continental scale. The main absolute motion of VL is towards SE (Ve 9.9 ± 0.26 mm/yr, Vn -11.9 ± 0.27 mm/yr) with a pattern similar to the transforms of the Tasman and Balleny fracture zones produced as consequence of Southern Ocean spreading. Residual velocities of the GNSS stations located in VL confirm the active role of the two main tectonic lineaments of the region, the Rennick-Aviator and the Lillie-Tucker faults with right-lateral sense of shear. The resulting VL gravity anomalies show a NW region characterized by small sized Bouguer anomaly with high uplift rates associated and a SE region with low values of Bouguer anomaly and general subsidence phenomena. The East andWest Antarctica are characterized by a different thickness of the Earth's crust, and the relative ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean Victoria Land Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) Antarctic Southern Ocean The Antarctic Victoria Land Rennick ENVELOPE(161.500,161.500,-72.000,-72.000) Remote Sensing 10 10 1608 |
institution |
Open Polar |
collection |
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) |
op_collection_id |
ftunivroma3iris |
language |
English |
topic |
Antarctica geodynamic Crustal deformation GNSS time serie Gravity anomaly Neo-tectonic PNRA VLNDEF Earth and Planetary Sciences (all) |
spellingShingle |
Antarctica geodynamic Crustal deformation GNSS time serie Gravity anomaly Neo-tectonic PNRA VLNDEF Earth and Planetary Sciences (all) Zanutta, Antonio Negusini, Monia Vittuari, Luca Martelli, Leonardo Cianfarra, Paola Salvini, Francesco MANCINI, FRANCESCO MARIA Sterzai, Paolo Dubbini, Marco Capra, Alessandro New geodetic and gravimetric maps to infer geodynamics of antarctica with insights on Victoria land |
topic_facet |
Antarctica geodynamic Crustal deformation GNSS time serie Gravity anomaly Neo-tectonic PNRA VLNDEF Earth and Planetary Sciences (all) |
description |
In order to make inferences on the geodynamics of Antarctica, geodetic and gravimetric maps derived from past and new observations can be used. This paper provides new insights into the geodynamics of Antarctica by integrating data at regional and continental scales. In particular, signatures of geodynamic activity at a regional extent have been investigated in Victoria Land (VL, Antarctica) by means of Global Navigation Satellite System (GNSS) permanent station observations, data from the VLNDEF (Victoria Land Network for Deformation control) discontinuous network, and gravity station measurements. At the continental scale, episodic GNSS observations on VLNDEF sites collected for 20 years, together with continuous data from the International GNSS Service (IGS) and Polar Earth Observing Network (POLENET) sites, were processed, and the Euler pole position assessed with the angular velocity of the Antarctic plate. Both the Bouguer and the free-air gravity anomaly maps were obtained by integrating the available open-access geophysics dataset, and a compilation of 180 gravity measurements collected in the VL within the Italian National Program for Antarctic Research (PNRA) activities. As a result, new evidence has been detected at regional and continental scale. The main absolute motion of VL is towards SE (Ve 9.9 ± 0.26 mm/yr, Vn -11.9 ± 0.27 mm/yr) with a pattern similar to the transforms of the Tasman and Balleny fracture zones produced as consequence of Southern Ocean spreading. Residual velocities of the GNSS stations located in VL confirm the active role of the two main tectonic lineaments of the region, the Rennick-Aviator and the Lillie-Tucker faults with right-lateral sense of shear. The resulting VL gravity anomalies show a NW region characterized by small sized Bouguer anomaly with high uplift rates associated and a SE region with low values of Bouguer anomaly and general subsidence phenomena. The East andWest Antarctica are characterized by a different thickness of the Earth's crust, and the relative ... |
author2 |
Zanutta, Antonio Negusini, Monia Vittuari, Luca Martelli, Leonardo Cianfarra, Paola Salvini, Francesco Mancini, FRANCESCO MARIA Sterzai, Paolo Dubbini, Marco Capra, Alessandro |
format |
Article in Journal/Newspaper |
author |
Zanutta, Antonio Negusini, Monia Vittuari, Luca Martelli, Leonardo Cianfarra, Paola Salvini, Francesco MANCINI, FRANCESCO MARIA Sterzai, Paolo Dubbini, Marco Capra, Alessandro |
author_facet |
Zanutta, Antonio Negusini, Monia Vittuari, Luca Martelli, Leonardo Cianfarra, Paola Salvini, Francesco MANCINI, FRANCESCO MARIA Sterzai, Paolo Dubbini, Marco Capra, Alessandro |
author_sort |
Zanutta, Antonio |
title |
New geodetic and gravimetric maps to infer geodynamics of antarctica with insights on Victoria land |
title_short |
New geodetic and gravimetric maps to infer geodynamics of antarctica with insights on Victoria land |
title_full |
New geodetic and gravimetric maps to infer geodynamics of antarctica with insights on Victoria land |
title_fullStr |
New geodetic and gravimetric maps to infer geodynamics of antarctica with insights on Victoria land |
title_full_unstemmed |
New geodetic and gravimetric maps to infer geodynamics of antarctica with insights on Victoria land |
title_sort |
new geodetic and gravimetric maps to infer geodynamics of antarctica with insights on victoria land |
publishDate |
2018 |
url |
http://hdl.handle.net/11590/350895 https://doi.org/10.3390/rs10101608 https://www.mdpi.com/2072-4292/10/10/1608/pdf |
long_lat |
ENVELOPE(161.500,161.500,-72.000,-72.000) |
geographic |
Antarctic Southern Ocean The Antarctic Victoria Land Rennick |
geographic_facet |
Antarctic Southern Ocean The Antarctic Victoria Land Rennick |
genre |
Antarc* Antarctic Antarctica Southern Ocean Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000448555800108 volume:10 issue:10 firstpage:1608 journal:REMOTE SENSING http://hdl.handle.net/11590/350895 doi:10.3390/rs10101608 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85055443038 https://www.mdpi.com/2072-4292/10/10/1608/pdf |
op_doi |
https://doi.org/10.3390/rs10101608 |
container_title |
Remote Sensing |
container_volume |
10 |
container_issue |
10 |
container_start_page |
1608 |
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1792046077126377472 |