05/03/2020 Abstract Portal
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Welcome Dr Fausto Ferraccioli
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The Open Science Conference theme is “Antarc c Science - Global Connec ons”. The dra program
(h ps://www.scarcomnap2020.org/program/) and venue details (h ps://www.scarcomnap2020.org/venues/) are available to view on the SCAR COMNAP 2020 website (h p://www.scarcomnap2020.org/).
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The abstract submission deadline is 28 February 2020, 5pm AEST
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4D Antarc ca: a new effort aims to help bridge the gap between Antarc c
crust and lithosphere structure and geothermal heat flux
Seismology, satellite-magne c and aeromagne c data, and sparse MT provide the only available geophysical proxies for large parts of Antarc ca’s Geothermal Heat Flux (GHF) due to the sparseness of direct
05/03/2020 Abstract Portal
https://leishman.eventsair.com/PresentationPortal/scar-comnap-2020/abstracts/Presentation/Update/cecfa4e9-8892-4ef3-a942-4cd90e4d9bc4?dr… 2/2
restricts our knowledge of Antarc ca’s contras ng tectono-thermal provinces and their influence on subglacial hydrology and ice sheet dynamics.
For example, some models derived from aeromagne c data predict remarkably high GHF in the interior of the West Antarc c Ri System (WARS), while other satellite magne c and seismological models favour instead a significantly colder ri interior but higher GHF stretching from the Marie Byrd Land dome towards the Antarc c Peninsula, and beneath parts of the Transantarc c Mountains. Reconciling these differences in West Antarc ca is impera ve to be er comprehend the degree to which the WARS influences the West Antarc c Ice Sheet, including thermal influences on GIA. Equally important, is quan fying geothermal heat flux variability in the generally colder but composite East Antarc c craton, especially beneath its giant marine-based basins.
Here we present a new ESA project- 4D Antarc ca that aims to be er connect interna onal Antarc c 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 To en catchment, the Recovery and Pensacola-Pole Basins and the Gamburtsev Sublgacial Mountains/East Antarc c Ri System are highlighted.
Ferraccioli F , Ebbing J , Dziadek R , Gohl K , Mather B , Fullea J , Verdoya M , Armadillo E , Green C
, Macelloni G , Wiens D , Shen W
NERC/Bri sh Antarc c Survey, Cambridge, United Kingdom Chris an-Albrechts University, Kiel, Germany
Alfred Wegener Ins tute, Bremerhaven, Germany University of Sydney, Sydney, Australia
University of Madrid, Madrid, Spain University of Leeds, Leeds, UK University of Genova, Genova, Italy
Consiglio Nazionale delle Ricerche, Sesto Fioren no, Italy Washington University in St Louis, St Louis Missouri, USA
Stony Brook University, New York, USA
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