L’evoluzione tettonica del continente antartico
Because of its location, Antarctica represents an observation point of special interest to global seismology. Also, seismology can greatly contribute to the knowledge of Antarctic neotectonics through the study of continental seismicity and lithospheric structure. The sporadic distribution of seismo...
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ftingv:oai:www.earth-prints.org:2122/3420 2023-05-15T13:51:39+02:00 L’evoluzione tettonica del continente antartico Pagliuca, N. M. Pagliuca, N. M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia 2001-11 http://hdl.handle.net/2122/3420 it ita Istituto Nazionale di Geofisica e Vulcanologia QUADERNI DI GEOFISICA 19/2001 http://hdl.handle.net/2122/3420 open antarctic seismicity passive margin glacial isostatic adjustment magnitude threshold 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous article 2001 ftingv 2022-07-29T06:04:46Z Because of its location, Antarctica represents an observation point of special interest to global seismology. Also, seismology can greatly contribute to the knowledge of Antarctic neotectonics through the study of continental seismicity and lithospheric structure. The sporadic distribution of seismographic stations south of latitude -45 both restricts our knowledge of the Antarctic continent, and leads to a bias in the interpretation of global geophysical properties of the Earth. Installation of seismographic stations should therefore be a priority for an Antarctic program having access to infrastructure in the area and there are particular activities carried on in the framework of the Italian Antarctic program (Programma Nazionale di Ricerche in Antartide, PNRA). In fact, the previously held notion that Antarctica is essentially aseismic has been disproved by using records from established Global Seismic Network stations and recently deployed temporary stations on the Antarctic continent. However, the seismicity observed in Antarctica is very low in comparison with other continental intraplate regions. In the continental intraplate region of Antarctica, earthquakes occur in three settings. Two are likely to have distributions with a tectonic control (although the level may be suppressed by ice-cover); those in the Transantarctic Mountains and scattered events in the interior. Finally, seismicity in the coastal zone and continental margin is likely to be most strongly controlled by the interaction between glacial isostatic adjustment and lithospheric thickness, with a regional tectonic component in some locations. INGV Published 90 3.3. Geodinamica e struttura dell'interno della Terra open Article in Journal/Newspaper Antarc* Antarctic Antarctica antartic* Antartide Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Antarctic The Antarctic Transantarctic Mountains |
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Open Polar |
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Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
op_collection_id |
ftingv |
language |
Italian |
topic |
antarctic seismicity passive margin glacial isostatic adjustment magnitude threshold 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous |
spellingShingle |
antarctic seismicity passive margin glacial isostatic adjustment magnitude threshold 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous Pagliuca, N. M. L’evoluzione tettonica del continente antartico |
topic_facet |
antarctic seismicity passive margin glacial isostatic adjustment magnitude threshold 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous |
description |
Because of its location, Antarctica represents an observation point of special interest to global seismology. Also, seismology can greatly contribute to the knowledge of Antarctic neotectonics through the study of continental seismicity and lithospheric structure. The sporadic distribution of seismographic stations south of latitude -45 both restricts our knowledge of the Antarctic continent, and leads to a bias in the interpretation of global geophysical properties of the Earth. Installation of seismographic stations should therefore be a priority for an Antarctic program having access to infrastructure in the area and there are particular activities carried on in the framework of the Italian Antarctic program (Programma Nazionale di Ricerche in Antartide, PNRA). In fact, the previously held notion that Antarctica is essentially aseismic has been disproved by using records from established Global Seismic Network stations and recently deployed temporary stations on the Antarctic continent. However, the seismicity observed in Antarctica is very low in comparison with other continental intraplate regions. In the continental intraplate region of Antarctica, earthquakes occur in three settings. Two are likely to have distributions with a tectonic control (although the level may be suppressed by ice-cover); those in the Transantarctic Mountains and scattered events in the interior. Finally, seismicity in the coastal zone and continental margin is likely to be most strongly controlled by the interaction between glacial isostatic adjustment and lithospheric thickness, with a regional tectonic component in some locations. INGV Published 90 3.3. Geodinamica e struttura dell'interno della Terra open |
author2 |
Pagliuca, N. M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia |
format |
Article in Journal/Newspaper |
author |
Pagliuca, N. M. |
author_facet |
Pagliuca, N. M. |
author_sort |
Pagliuca, N. M. |
title |
L’evoluzione tettonica del continente antartico |
title_short |
L’evoluzione tettonica del continente antartico |
title_full |
L’evoluzione tettonica del continente antartico |
title_fullStr |
L’evoluzione tettonica del continente antartico |
title_full_unstemmed |
L’evoluzione tettonica del continente antartico |
title_sort |
l’evoluzione tettonica del continente antartico |
publisher |
Istituto Nazionale di Geofisica e Vulcanologia |
publishDate |
2001 |
url |
http://hdl.handle.net/2122/3420 |
geographic |
Antarctic The Antarctic Transantarctic Mountains |
geographic_facet |
Antarctic The Antarctic Transantarctic Mountains |
genre |
Antarc* Antarctic Antarctica antartic* Antartide |
genre_facet |
Antarc* Antarctic Antarctica antartic* Antartide |
op_relation |
QUADERNI DI GEOFISICA 19/2001 http://hdl.handle.net/2122/3420 |
op_rights |
open |
_version_ |
1766255653418958848 |