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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Online Access: | https://hdl.handle.net/11566/326132 https://doi.org/10.1016/j.margeo.2023.107189 |
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ftupmarcheiris:oai:iris.univpm.it:11566/326132 2024-04-21T07:52:13+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/11566/326132 https://doi.org/10.1016/j.margeo.2023.107189 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:001134182600001 volume:467 numberofpages:19 journal:MARINE GEOLOGY https://hdl.handle.net/11566/326132 doi:10.1016/j.margeo.2023.107189 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85179135927 info:eu-repo/semantics/openAccess Antarctica Ross Sea Sediment drift Bottom current Fjord Glacier info:eu-repo/semantics/article 2024 ftupmarcheiris https://doi.org/10.1016/j.margeo.2023.107189 2024-03-28T01:39:02Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Ross Sea Victoria Land Università Politecnica delle Marche: IRIS Marine Geology 467 107189 |
institution |
Open Polar |
collection |
Università Politecnica delle Marche: IRIS |
op_collection_id |
ftupmarcheiris |
language |
English |
topic |
Antarctica Ross Sea Sediment drift Bottom current Fjord Glacier |
spellingShingle |
Antarctica Ross Sea Sediment drift Bottom current Fjord Glacier 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 Ross Sea Sediment drift Bottom current Fjord Glacier |
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. |
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 |
publishDate |
2024 |
url |
https://hdl.handle.net/11566/326132 https://doi.org/10.1016/j.margeo.2023.107189 |
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 numberofpages:19 journal:MARINE GEOLOGY https://hdl.handle.net/11566/326132 doi:10.1016/j.margeo.2023.107189 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85179135927 |
op_rights |
info:eu-repo/semantics/openAccess |
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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1796935454623268864 |