4D Antarctica: a new effort aims to help bridge the gap between Antarctic crust and lithosphere structure and geothermal heat flux
Seismology, satellite-magnetic and aeromagnetic data, and sparse MT provide the only available geophysical proxies for large parts of Antarctica’s Geothermal Heat Flux (GHF) due to the sparseness of direct measurements. However, these geophysical methods have yielded significantly different GHF esti...
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ftunivgenova:oai:iris.unige.it:11567/1025659 2024-01-28T09:58:28+01:00 4D Antarctica: a new effort aims to help bridge the gap between Antarctic crust and lithosphere structure and geothermal heat flux Ferraccioli F Ebbing J Dziadek R Gohl K Mather B Fullea J Verdoya M Armadillo E Green C Macelloni G Wiens D Shen W Ferraccioli, F Ebbing, J Dziadek, R Gohl, K Mather, B Fullea, J Verdoya, M Armadillo, E Green, C Macelloni, G Wiens, D Shen, W 2020 ELETTRONICO http://hdl.handle.net/11567/1025659 eng eng ispartofbook:SCAR 2020 Abstract book SCAR 2020 firstpage:1 lastpage:1 numberofpages:1 http://hdl.handle.net/11567/1025659 info:eu-repo/semantics/openAccess info:eu-repo/semantics/conferenceObject 2020 ftunivgenova 2024-01-03T18:01:58Z Seismology, satellite-magnetic and aeromagnetic data, and sparse MT provide the only available geophysical proxies for large parts of Antarctica’s Geothermal Heat Flux (GHF) due to the sparseness of direct measurements. However, these geophysical methods have yielded significantly different GHF estimates. This restricts our knowledge of Antarctica’s contrasting tectono-thermal provinces and their influence on subglacial hydrology and ice sheet dynamics. For example, some models derived from aeromagnetic data predict remarkably high GHF in the interior of the West Antarctic Rift System (WARS), while other satellite magnetic and seismological models favour instead a significantly colder rift interior but higher GHF stretching from the Marie Byrd Land dome towards the Antarctic Peninsula, and beneath parts of the Transantarctic Mountains. Reconciling these differences in West Antarctica is imperative to better comprehend the degree to which the WARS influences the West Antarctic Ice Sheet, including thermal influences on GIA. Equally important, is quantifying geothermal heat flux variability in the generally colder but composite East Antarctic craton, especially beneath its giant marine-based basins. Here we present a new ESA project- 4D Antarctica that aims to better connect international Antarctic crust and lithosphere studies with GHF, and assess its influence on subglacial hydrology by analysing and modelling recent satellite and airborne geophysical datasets. The state of the art, hypotheses to test, and methodological approaches for five key study areas, including the Amundsen Sea Embayment, the Wilkes Subglacial Basin and the Totten catchment, the Recovery and Pensacola-Pole Basins and the Gamburtsev Sublgacial Mountains/East Antarctic Rift System are highlighted. Conference Object Amundsen Sea Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet Marie Byrd Land West Antarctica Università degli Studi di Genova: CINECA IRIS Antarctic The Antarctic Antarctic Peninsula West Antarctica Amundsen Sea West Antarctic Ice Sheet Transantarctic Mountains Byrd Marie Byrd Land ENVELOPE(-130.000,-130.000,-78.000,-78.000) Wilkes Subglacial Basin ENVELOPE(145.000,145.000,-75.000,-75.000) |
institution |
Open Polar |
collection |
Università degli Studi di Genova: CINECA IRIS |
op_collection_id |
ftunivgenova |
language |
English |
description |
Seismology, satellite-magnetic and aeromagnetic data, and sparse MT provide the only available geophysical proxies for large parts of Antarctica’s Geothermal Heat Flux (GHF) due to the sparseness of direct measurements. However, these geophysical methods have yielded significantly different GHF estimates. This restricts our knowledge of Antarctica’s contrasting tectono-thermal provinces and their influence on subglacial hydrology and ice sheet dynamics. For example, some models derived from aeromagnetic data predict remarkably high GHF in the interior of the West Antarctic Rift System (WARS), while other satellite magnetic and seismological models favour instead a significantly colder rift interior but higher GHF stretching from the Marie Byrd Land dome towards the Antarctic Peninsula, and beneath parts of the Transantarctic Mountains. Reconciling these differences in West Antarctica is imperative to better comprehend the degree to which the WARS influences the West Antarctic Ice Sheet, including thermal influences on GIA. Equally important, is quantifying geothermal heat flux variability in the generally colder but composite East Antarctic craton, especially beneath its giant marine-based basins. Here we present a new ESA project- 4D Antarctica that aims to better connect international Antarctic crust and lithosphere studies with GHF, and assess its influence on subglacial hydrology by analysing and modelling recent satellite and airborne geophysical datasets. The state of the art, hypotheses to test, and methodological approaches for five key study areas, including the Amundsen Sea Embayment, the Wilkes Subglacial Basin and the Totten catchment, the Recovery and Pensacola-Pole Basins and the Gamburtsev Sublgacial Mountains/East Antarctic Rift System are highlighted. |
author2 |
Ferraccioli, F Ebbing, J Dziadek, R Gohl, K Mather, B Fullea, J Verdoya, M Armadillo, E Green, C Macelloni, G Wiens, D Shen, W |
format |
Conference Object |
author |
Ferraccioli F Ebbing J Dziadek R Gohl K Mather B Fullea J Verdoya M Armadillo E Green C Macelloni G Wiens D Shen W |
spellingShingle |
Ferraccioli F Ebbing J Dziadek R Gohl K Mather B Fullea J Verdoya M Armadillo E Green C Macelloni G Wiens D Shen W 4D Antarctica: a new effort aims to help bridge the gap between Antarctic crust and lithosphere structure and geothermal heat flux |
author_facet |
Ferraccioli F Ebbing J Dziadek R Gohl K Mather B Fullea J Verdoya M Armadillo E Green C Macelloni G Wiens D Shen W |
author_sort |
Ferraccioli F |
title |
4D Antarctica: a new effort aims to help bridge the gap between Antarctic crust and lithosphere structure and geothermal heat flux |
title_short |
4D Antarctica: a new effort aims to help bridge the gap between Antarctic crust and lithosphere structure and geothermal heat flux |
title_full |
4D Antarctica: a new effort aims to help bridge the gap between Antarctic crust and lithosphere structure and geothermal heat flux |
title_fullStr |
4D Antarctica: a new effort aims to help bridge the gap between Antarctic crust and lithosphere structure and geothermal heat flux |
title_full_unstemmed |
4D Antarctica: a new effort aims to help bridge the gap between Antarctic crust and lithosphere structure and geothermal heat flux |
title_sort |
4d antarctica: a new effort aims to help bridge the gap between antarctic crust and lithosphere structure and geothermal heat flux |
publishDate |
2020 |
url |
http://hdl.handle.net/11567/1025659 |
long_lat |
ENVELOPE(-130.000,-130.000,-78.000,-78.000) ENVELOPE(145.000,145.000,-75.000,-75.000) |
geographic |
Antarctic The Antarctic Antarctic Peninsula West Antarctica Amundsen Sea West Antarctic Ice Sheet Transantarctic Mountains Byrd Marie Byrd Land Wilkes Subglacial Basin |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula West Antarctica Amundsen Sea West Antarctic Ice Sheet Transantarctic Mountains Byrd Marie Byrd Land Wilkes Subglacial Basin |
genre |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet Marie Byrd Land West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet Marie Byrd Land West Antarctica |
op_relation |
ispartofbook:SCAR 2020 Abstract book SCAR 2020 firstpage:1 lastpage:1 numberofpages:1 http://hdl.handle.net/11567/1025659 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1789327109284429824 |