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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Online Access: | http://hdl.handle.net/11380/1167237 https://doi.org/10.3390/rs10101608 https://www.mdpi.com/2072-4292/10/10/1608 |
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ftunivmodena:oai:iris.unimore.it:11380/1167237 2024-04-14T08:02:59+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 Sterzai Paolo Dubbini Marco Capra Alessandro Zanutta, Antonio Negusini, Monia Vittuari, Luca Martelli, Leonardo Cianfarra, Paola Salvini, Francesco Mancini, Francesco Sterzai, Paolo Dubbini, Marco Capra, Alessandro 2018 http://hdl.handle.net/11380/1167237 https://doi.org/10.3390/rs10101608 https://www.mdpi.com/2072-4292/10/10/1608 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000448555800108 volume:10 issue:10 firstpage:1 lastpage:27 journal:REMOTE SENSING http://hdl.handle.net/11380/1167237 doi:10.3390/rs10101608 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85055443038 https://www.mdpi.com/2072-4292/10/10/1608 info:eu-repo/semantics/openAccess VLNDEF gravity anomaly GNSS time serie neo-tectonic Antarctica geodynamic crustal deformation PNRA info:eu-repo/semantics/article 2018 ftunivmodena https://doi.org/10.3390/rs10101608 2024-03-21T18:09:06Z 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 and West 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 West Antarctica Archivio della ricerca dell'Università di Modena e Reggio Emilia (Unimore: IRIS) Antarctic Rennick ENVELOPE(161.500,161.500,-72.000,-72.000) Southern Ocean The Antarctic Victoria Land West Antarctica Remote Sensing 10 10 1608 |
institution |
Open Polar |
collection |
Archivio della ricerca dell'Università di Modena e Reggio Emilia (Unimore: IRIS) |
op_collection_id |
ftunivmodena |
language |
English |
topic |
VLNDEF gravity anomaly GNSS time serie neo-tectonic Antarctica geodynamic crustal deformation PNRA |
spellingShingle |
VLNDEF gravity anomaly GNSS time serie neo-tectonic Antarctica geodynamic crustal deformation PNRA Zanutta Antonio Negusini Monia Vittuari Luca Martelli Leonardo Cianfarra Paola Salvini Francesco Mancini Francesco Sterzai Paolo Dubbini Marco Capra Alessandro New geodetic and gravimetric maps to infer geodynamics of Antarctica with insights on Victoria Land |
topic_facet |
VLNDEF gravity anomaly GNSS time serie neo-tectonic Antarctica geodynamic crustal deformation PNRA |
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 and West 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 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 Sterzai Paolo Dubbini Marco Capra Alessandro |
author_facet |
Zanutta Antonio Negusini Monia Vittuari Luca Martelli Leonardo Cianfarra Paola Salvini Francesco Mancini Francesco 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/11380/1167237 https://doi.org/10.3390/rs10101608 https://www.mdpi.com/2072-4292/10/10/1608 |
long_lat |
ENVELOPE(161.500,161.500,-72.000,-72.000) |
geographic |
Antarctic Rennick Southern Ocean The Antarctic Victoria Land West Antarctica |
geographic_facet |
Antarctic Rennick Southern Ocean The Antarctic Victoria Land West Antarctica |
genre |
Antarc* Antarctic Antarctica Southern Ocean Victoria Land West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean Victoria Land West Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000448555800108 volume:10 issue:10 firstpage:1 lastpage:27 journal:REMOTE SENSING http://hdl.handle.net/11380/1167237 doi:10.3390/rs10101608 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85055443038 https://www.mdpi.com/2072-4292/10/10/1608 |
op_rights |
info:eu-repo/semantics/openAccess |
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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1796319072825114624 |