Multidisciplinary analysis of three box cores collected east to the Hillary Canyon (Eastern Ross Sea, Antarctica)
9 si The LGM and post-LGM history of the Antarctic Ice Sheet (AIS) can be reconstructed by studying cores and box cores collected along the continental slope of Antarctica. According to several authors (Shipp et al., 1999; Mosola & Anderson, 2006; Halberstadt et al., 2016; Anderson et al., 2018;...
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ftunitriestiris:oai:arts.units.it:11368/3023654 2023-05-15T13:55:03+02:00 Multidisciplinary analysis of three box cores collected east to the Hillary Canyon (Eastern Ross Sea, Antarctica) Dipartimento di Matematica e Geoscienze 713 Facolta' di Scienze matematiche, fisiche e naturali 2022-06-15T18:16:49Z http://hdl.handle.net/11368/3023654 eng eng - 27-29 Settembre 2021 "6th International Symposium on Polar Sciences - Incheon (Online) manual http://hdl.handle.net/11368/3023654 Antarctica Ross Sea Ross slope box cores sedimentology internazionale Esperti anonimi 273 4 Contributo in Atti Convegno::4.2 Abstract info:eu-repo/semantics/conferenceObject 2022 ftunitriestiris 2022-07-06T16:57:31Z 9 si The LGM and post-LGM history of the Antarctic Ice Sheet (AIS) can be reconstructed by studying cores and box cores collected along the continental slope of Antarctica. According to several authors (Shipp et al., 1999; Mosola & Anderson, 2006; Halberstadt et al., 2016; Anderson et al., 2018; Gales et al., 2021) the Western Antarctic Ice Sheet (WAIS) was grounded near the shelf break in many sectors of the Eastern Ross Sea (ERS) during the Last Glacial Maximum (LGM). However, the post-LGM retreat is characterized by lacks and uncertainties. Three box cores were collected east of the Hillary Canyon, which carves the ERS continental slope south-east to the Iselin Bank, during the XXIX PNRA (Italian National Antarctic Research Program) expedition (2013-2014). The samples were studied in the frame of the ROSSLOPE II (2013/AN2.01) PNRA project and then in the frame of the STREAM Project (Late Quaternary evolution of the ocean-ice sheet interactions: the record from the Ross Sea continental margin, Antarctica (project funded by the Italian Ministry of Foreign Affairs and International Cooperation and the National Research Foundation of Korea). Grain size, organic matter, biogenic silica and water content, magnetic susceptibility and chemical composition (XRF core scanner) were analyzed in order to reconstruct the paleoclimate of Late Quaternary. Organic matter (14C AIO dates) was used to date each box core. The results of these analyses are presented here. References Anderson J.B., Simkins L.M., Bart P.J., De Santis L., Halberstadt A.R.W., Olivo E. & Greenwood S.L. 2018. Seismic and geomorphic records of Antarctic Ice Sheet evolution in the Ross Sea and controlling factors in its behaviour. In: Le Heron, D.P., Hogan, K.A., Phillips, E.R., Huuse, M., Busfield, M.E. & Graham, A.G.C. Eds., Glaciated Margins: The Sedimentary and Geophysical Archive. Geological Society, London, Special Publications, 475, 223-240. Gales J., Rebesco M., De Santis L., Bergamasco A., Colleoni F., Kim S., Accettella D., ... Conference Object Antarc* Antarctic Antarctica Ice Sheet Italian National Antarctic Research Program National Antarctic Research Program Ross Sea Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) Antarctic Hillary Canyon ENVELOPE(-175.762,-175.762,-74.544,-74.544) Iselin Bank ENVELOPE(-179.000,-179.000,-72.500,-72.500) Ross Sea The Antarctic |
institution |
Open Polar |
collection |
Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) |
op_collection_id |
ftunitriestiris |
language |
English |
topic |
Antarctica Ross Sea Ross slope box cores sedimentology |
spellingShingle |
Antarctica Ross Sea Ross slope box cores sedimentology Multidisciplinary analysis of three box cores collected east to the Hillary Canyon (Eastern Ross Sea, Antarctica) |
topic_facet |
Antarctica Ross Sea Ross slope box cores sedimentology |
description |
9 si The LGM and post-LGM history of the Antarctic Ice Sheet (AIS) can be reconstructed by studying cores and box cores collected along the continental slope of Antarctica. According to several authors (Shipp et al., 1999; Mosola & Anderson, 2006; Halberstadt et al., 2016; Anderson et al., 2018; Gales et al., 2021) the Western Antarctic Ice Sheet (WAIS) was grounded near the shelf break in many sectors of the Eastern Ross Sea (ERS) during the Last Glacial Maximum (LGM). However, the post-LGM retreat is characterized by lacks and uncertainties. Three box cores were collected east of the Hillary Canyon, which carves the ERS continental slope south-east to the Iselin Bank, during the XXIX PNRA (Italian National Antarctic Research Program) expedition (2013-2014). The samples were studied in the frame of the ROSSLOPE II (2013/AN2.01) PNRA project and then in the frame of the STREAM Project (Late Quaternary evolution of the ocean-ice sheet interactions: the record from the Ross Sea continental margin, Antarctica (project funded by the Italian Ministry of Foreign Affairs and International Cooperation and the National Research Foundation of Korea). Grain size, organic matter, biogenic silica and water content, magnetic susceptibility and chemical composition (XRF core scanner) were analyzed in order to reconstruct the paleoclimate of Late Quaternary. Organic matter (14C AIO dates) was used to date each box core. The results of these analyses are presented here. References Anderson J.B., Simkins L.M., Bart P.J., De Santis L., Halberstadt A.R.W., Olivo E. & Greenwood S.L. 2018. Seismic and geomorphic records of Antarctic Ice Sheet evolution in the Ross Sea and controlling factors in its behaviour. In: Le Heron, D.P., Hogan, K.A., Phillips, E.R., Huuse, M., Busfield, M.E. & Graham, A.G.C. Eds., Glaciated Margins: The Sedimentary and Geophysical Archive. Geological Society, London, Special Publications, 475, 223-240. Gales J., Rebesco M., De Santis L., Bergamasco A., Colleoni F., Kim S., Accettella D., ... |
author2 |
Dipartimento di Matematica e Geoscienze 713 Facolta' di Scienze matematiche, fisiche e naturali |
format |
Conference Object |
title |
Multidisciplinary analysis of three box cores collected east to the Hillary Canyon (Eastern Ross Sea, Antarctica) |
title_short |
Multidisciplinary analysis of three box cores collected east to the Hillary Canyon (Eastern Ross Sea, Antarctica) |
title_full |
Multidisciplinary analysis of three box cores collected east to the Hillary Canyon (Eastern Ross Sea, Antarctica) |
title_fullStr |
Multidisciplinary analysis of three box cores collected east to the Hillary Canyon (Eastern Ross Sea, Antarctica) |
title_full_unstemmed |
Multidisciplinary analysis of three box cores collected east to the Hillary Canyon (Eastern Ross Sea, Antarctica) |
title_sort |
multidisciplinary analysis of three box cores collected east to the hillary canyon (eastern ross sea, antarctica) |
publisher |
- |
publishDate |
2022 |
url |
http://hdl.handle.net/11368/3023654 |
long_lat |
ENVELOPE(-175.762,-175.762,-74.544,-74.544) ENVELOPE(-179.000,-179.000,-72.500,-72.500) |
geographic |
Antarctic Hillary Canyon Iselin Bank Ross Sea The Antarctic |
geographic_facet |
Antarctic Hillary Canyon Iselin Bank Ross Sea The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet Italian National Antarctic Research Program National Antarctic Research Program Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Italian National Antarctic Research Program National Antarctic Research Program Ross Sea |
op_relation |
27-29 Settembre 2021 "6th International Symposium on Polar Sciences - Incheon (Online) manual http://hdl.handle.net/11368/3023654 |
_version_ |
1766261274003374080 |