The discovery of the southernmost ultra-high-resolution Holocene paleoclimate sedimentary record in Antarctica
The response of the Antarctic ice sheet to climate warming is the main source of uncertainty regarding future global sea level rise, since little is known about its present and past dynamics. The last deglaciation is the most recent interval of large-scale climate warming, during which the Northern...
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Elsevier
2024
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Online Access: | https://hdl.handle.net/11567/1157475 https://doi.org/10.1016/j.margeo.2023.107189 |
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ftunivgenova:oai:iris.unige.it:11567/1157475 2024-05-12T07:54:26+00:00 The discovery of the southernmost ultra-high-resolution Holocene paleoclimate sedimentary record in Antarctica Battaglia F. De Santis L. Baradello L. Colizza E. Rebesco M. Kovacevic V. Ursella L. Bensi M. Accettella D. Morelli D. Corradi N. Falco P. Krauzig N. Colleoni F. Gordini E. Caburlotto A. Langone L. Finocchiaro F. Battaglia, F. De Santis, L. Baradello, L. Colizza, E. Rebesco, M. Kovacevic, V. Ursella, L. Bensi, M. Accettella, D. Morelli, D. Corradi, N. Falco, P. Krauzig, N. Colleoni, F. Gordini, E. Caburlotto, A. Langone, L. Finocchiaro, F. 2024 ELETTRONICO https://hdl.handle.net/11567/1157475 https://doi.org/10.1016/j.margeo.2023.107189 eng eng Elsevier info:eu-repo/semantics/altIdentifier/wos/WOS:001134182600001 volume:467 firstpage:1 lastpage:19 numberofpages:19 journal:MARINE GEOLOGY https://hdl.handle.net/11567/1157475 doi:10.1016/j.margeo.2023.107189 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85179135927 Antarctica Bottom current Fjord Glacier Ross Sea Sediment drift info:eu-repo/semantics/article 2024 ftunivgenova https://doi.org/10.1016/j.margeo.2023.107189 2024-04-18T00:20:57Z The response of the Antarctic ice sheet to climate warming is the main source of uncertainty regarding future global sea level rise, since little is known about its present and past dynamics. The last deglaciation is the most recent interval of large-scale climate warming, during which the Northern and Southern Hemisphere ice sheets retreated, and sea level rose globally, although at a non-uniform rate. Geologic records from the polar regions are fundamental in determining the factors that caused the major changes in ice sheets during the last deglacial under different boundary conditions. Here, we combine morpho-bathymetric and seismic data with sediment cores and oceanographic measurements to reconstruct the processes that influenced the deposition of the southernmost, most extensive, ultrahigh-resolution record of the Holocene in Edisto Inlet fjord (Ross Sea, Antarctica). We find that post-glacial sedimentation resulted in a layered diatom mud up to 110 m thick that was locally redistributed by bottom currents over confined drifts-moats in the central part of the fjord. After the Holocene climatic optimum, the fjord was not carved by ground ice, and there continued to be internal fjord water circulation associated with Ross Sea circulation. These results support a retreat of coastal glaciers by about 11 kiloyears ago (ka) from the continental shelf of North Victoria Land. © 2023 Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Ross Sea Victoria Land Università degli Studi di Genova: CINECA IRIS Antarctic The Antarctic Ross Sea Victoria Land Edisto ENVELOPE(-67.133,-67.133,-68.217,-68.217) Edisto Inlet ENVELOPE(170.083,170.083,-72.333,-72.333) Marine Geology 467 107189 |
institution |
Open Polar |
collection |
Università degli Studi di Genova: CINECA IRIS |
op_collection_id |
ftunivgenova |
language |
English |
topic |
Antarctica Bottom current Fjord Glacier Ross Sea Sediment drift |
spellingShingle |
Antarctica Bottom current Fjord Glacier Ross Sea Sediment drift Battaglia F. De Santis L. Baradello L. Colizza E. Rebesco M. Kovacevic V. Ursella L. Bensi M. Accettella D. Morelli D. Corradi N. Falco P. Krauzig N. Colleoni F. Gordini E. Caburlotto A. Langone L. Finocchiaro F. The discovery of the southernmost ultra-high-resolution Holocene paleoclimate sedimentary record in Antarctica |
topic_facet |
Antarctica Bottom current Fjord Glacier Ross Sea Sediment drift |
description |
The response of the Antarctic ice sheet to climate warming is the main source of uncertainty regarding future global sea level rise, since little is known about its present and past dynamics. The last deglaciation is the most recent interval of large-scale climate warming, during which the Northern and Southern Hemisphere ice sheets retreated, and sea level rose globally, although at a non-uniform rate. Geologic records from the polar regions are fundamental in determining the factors that caused the major changes in ice sheets during the last deglacial under different boundary conditions. Here, we combine morpho-bathymetric and seismic data with sediment cores and oceanographic measurements to reconstruct the processes that influenced the deposition of the southernmost, most extensive, ultrahigh-resolution record of the Holocene in Edisto Inlet fjord (Ross Sea, Antarctica). We find that post-glacial sedimentation resulted in a layered diatom mud up to 110 m thick that was locally redistributed by bottom currents over confined drifts-moats in the central part of the fjord. After the Holocene climatic optimum, the fjord was not carved by ground ice, and there continued to be internal fjord water circulation associated with Ross Sea circulation. These results support a retreat of coastal glaciers by about 11 kiloyears ago (ka) from the continental shelf of North Victoria Land. © 2023 |
author2 |
Battaglia, F. De Santis, L. Baradello, L. Colizza, E. Rebesco, M. Kovacevic, V. Ursella, L. Bensi, M. Accettella, D. Morelli, D. Corradi, N. Falco, P. Krauzig, N. Colleoni, F. Gordini, E. Caburlotto, A. Langone, L. Finocchiaro, F. |
format |
Article in Journal/Newspaper |
author |
Battaglia F. De Santis L. Baradello L. Colizza E. Rebesco M. Kovacevic V. Ursella L. Bensi M. Accettella D. Morelli D. Corradi N. Falco P. Krauzig N. Colleoni F. Gordini E. Caburlotto A. Langone L. Finocchiaro F. |
author_facet |
Battaglia F. De Santis L. Baradello L. Colizza E. Rebesco M. Kovacevic V. Ursella L. Bensi M. Accettella D. Morelli D. Corradi N. Falco P. Krauzig N. Colleoni F. Gordini E. Caburlotto A. Langone L. Finocchiaro F. |
author_sort |
Battaglia F. |
title |
The discovery of the southernmost ultra-high-resolution Holocene paleoclimate sedimentary record in Antarctica |
title_short |
The discovery of the southernmost ultra-high-resolution Holocene paleoclimate sedimentary record in Antarctica |
title_full |
The discovery of the southernmost ultra-high-resolution Holocene paleoclimate sedimentary record in Antarctica |
title_fullStr |
The discovery of the southernmost ultra-high-resolution Holocene paleoclimate sedimentary record in Antarctica |
title_full_unstemmed |
The discovery of the southernmost ultra-high-resolution Holocene paleoclimate sedimentary record in Antarctica |
title_sort |
discovery of the southernmost ultra-high-resolution holocene paleoclimate sedimentary record in antarctica |
publisher |
Elsevier |
publishDate |
2024 |
url |
https://hdl.handle.net/11567/1157475 https://doi.org/10.1016/j.margeo.2023.107189 |
long_lat |
ENVELOPE(-67.133,-67.133,-68.217,-68.217) ENVELOPE(170.083,170.083,-72.333,-72.333) |
geographic |
Antarctic The Antarctic Ross Sea Victoria Land Edisto Edisto Inlet |
geographic_facet |
Antarctic The Antarctic Ross Sea Victoria Land Edisto Edisto Inlet |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ross Sea Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:001134182600001 volume:467 firstpage:1 lastpage:19 numberofpages:19 journal:MARINE GEOLOGY https://hdl.handle.net/11567/1157475 doi:10.1016/j.margeo.2023.107189 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85179135927 |
op_doi |
https://doi.org/10.1016/j.margeo.2023.107189 |
container_title |
Marine Geology |
container_volume |
467 |
container_start_page |
107189 |
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