Oceanography of the Edisto inlet (Western Ross Sea): First results from the XXXVIII Italian Antarctic expedition
Laminated diatomaceous deposits have been documented in a few Antarctic regions, including the Antarctic Peninsula and the Ross Sea. In general, very high sedimentation rates can overwhelm limited bioturbation and thus foster the preservation of varves, for example in some glacio-marine settings. La...
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ftunivpisairis:oai:arpi.unipi.it:11568/1195947 2024-02-27T08:33:35+00:00 Oceanography of the Edisto inlet (Western Ross Sea): First results from the XXXVIII Italian Antarctic expedition Aulicino G. Bensi M. Cerino F. Kovacevic V. Mangoni O. Monti M. Morigi C. Sabbatini A. Tesi. T. Diociaiuti T. Carotenuto A. Cerino E. Caridi F. Langone L. Aulicino, G. Bensi, M. Cerino, F. Kovacevic, V. Mangoni, O. Monti, M. Morigi, C. Sabbatini, A. Tes, i. T. Diociaiuti, T. Carotenuto, A. Cerino, E. Caridi, F. Langone, L. 2023 ELETTRONICO https://hdl.handle.net/11568/1195947 eng eng ispartofbook:IV Ross Sea Conference IV Ross Sea Conference https://hdl.handle.net/11568/1195947 info:eu-repo/semantics/conferenceObject 2023 ftunivpisairis 2024-01-31T17:58:25Z Laminated diatomaceous deposits have been documented in a few Antarctic regions, including the Antarctic Peninsula and the Ross Sea. In general, very high sedimentation rates can overwhelm limited bioturbation and thus foster the preservation of varves, for example in some glacio-marine settings. Laminated sediments, collected in the Edisto Inlet, western Ross Sea, showed well-defined dark and light laminae on mm- to cm-scale. Dark laminae contained relatively high concentrations of a biomarker of fast ice IPSO25, whereas, low IPSO25 concentrations characterized light laminae and the diatom Corethron pennatum became the dominant species. Based on these assumptions, fast ice dynamics were reconstructed over the last 2.6 ka for the western Ross Sea. Nevertheless, the absence of rigorous varve validation leaves uncertain the paleoclimatic and paleoceanographic interpretation of these laminated sediments. The project PNRA_LASAGNE (Laminated sediments in the magnificent Edisto Inlet (Victoria Land): What processes control their deposition and preservation?) proposes a multidisciplinary study integrating fast-ice, water column and surface sediment characteristics, supported by biological data collected in situ and time-series of satellite images of sea-ice, to gain information on factors influencing the formation and preservation of laminated sediment in Edisto Inlet. It aims at providing new insights into the sub-seasonal formation of laminated sediments providing a backbone for the interpretation of paleoclimate sediment archives. Here, we show the preliminary results obtained from an extensive dataset collected in Edisto Inlet during the XXXVIII Italian PNRA expedition conducted onboard the I/B Laura Bassi in Feb 2023. Data includes CTD vertical profiles with additional parameters (DO, fluorescence, turbidity) spatially distributed within and at the entrance of the bay, which was still partially covered by seasonal sea ice at the time of the cruise. Moreover, vessel mounted (vm) and Lowered (L) ADCPs have been ... Conference Object Antarc* Antarctic Antarctic Peninsula Ross Sea Sea ice Victoria Land ARPI - Archivio della Ricerca dell'Università di Pisa Antarctic Antarctic Peninsula Edisto ENVELOPE(-67.133,-67.133,-68.217,-68.217) Edisto Inlet ENVELOPE(170.083,170.083,-72.333,-72.333) Ross Sea The Antarctic Victoria Land |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
description |
Laminated diatomaceous deposits have been documented in a few Antarctic regions, including the Antarctic Peninsula and the Ross Sea. In general, very high sedimentation rates can overwhelm limited bioturbation and thus foster the preservation of varves, for example in some glacio-marine settings. Laminated sediments, collected in the Edisto Inlet, western Ross Sea, showed well-defined dark and light laminae on mm- to cm-scale. Dark laminae contained relatively high concentrations of a biomarker of fast ice IPSO25, whereas, low IPSO25 concentrations characterized light laminae and the diatom Corethron pennatum became the dominant species. Based on these assumptions, fast ice dynamics were reconstructed over the last 2.6 ka for the western Ross Sea. Nevertheless, the absence of rigorous varve validation leaves uncertain the paleoclimatic and paleoceanographic interpretation of these laminated sediments. The project PNRA_LASAGNE (Laminated sediments in the magnificent Edisto Inlet (Victoria Land): What processes control their deposition and preservation?) proposes a multidisciplinary study integrating fast-ice, water column and surface sediment characteristics, supported by biological data collected in situ and time-series of satellite images of sea-ice, to gain information on factors influencing the formation and preservation of laminated sediment in Edisto Inlet. It aims at providing new insights into the sub-seasonal formation of laminated sediments providing a backbone for the interpretation of paleoclimate sediment archives. Here, we show the preliminary results obtained from an extensive dataset collected in Edisto Inlet during the XXXVIII Italian PNRA expedition conducted onboard the I/B Laura Bassi in Feb 2023. Data includes CTD vertical profiles with additional parameters (DO, fluorescence, turbidity) spatially distributed within and at the entrance of the bay, which was still partially covered by seasonal sea ice at the time of the cruise. Moreover, vessel mounted (vm) and Lowered (L) ADCPs have been ... |
author2 |
Aulicino, G. Bensi, M. Cerino, F. Kovacevic, V. Mangoni, O. Monti, M. Morigi, C. Sabbatini, A. Tes, i. T. Diociaiuti, T. Carotenuto, A. Cerino, E. Caridi, F. Langone, L. |
format |
Conference Object |
author |
Aulicino G. Bensi M. Cerino F. Kovacevic V. Mangoni O. Monti M. Morigi C. Sabbatini A. Tesi. T. Diociaiuti T. Carotenuto A. Cerino E. Caridi F. Langone L. |
spellingShingle |
Aulicino G. Bensi M. Cerino F. Kovacevic V. Mangoni O. Monti M. Morigi C. Sabbatini A. Tesi. T. Diociaiuti T. Carotenuto A. Cerino E. Caridi F. Langone L. Oceanography of the Edisto inlet (Western Ross Sea): First results from the XXXVIII Italian Antarctic expedition |
author_facet |
Aulicino G. Bensi M. Cerino F. Kovacevic V. Mangoni O. Monti M. Morigi C. Sabbatini A. Tesi. T. Diociaiuti T. Carotenuto A. Cerino E. Caridi F. Langone L. |
author_sort |
Aulicino G. |
title |
Oceanography of the Edisto inlet (Western Ross Sea): First results from the XXXVIII Italian Antarctic expedition |
title_short |
Oceanography of the Edisto inlet (Western Ross Sea): First results from the XXXVIII Italian Antarctic expedition |
title_full |
Oceanography of the Edisto inlet (Western Ross Sea): First results from the XXXVIII Italian Antarctic expedition |
title_fullStr |
Oceanography of the Edisto inlet (Western Ross Sea): First results from the XXXVIII Italian Antarctic expedition |
title_full_unstemmed |
Oceanography of the Edisto inlet (Western Ross Sea): First results from the XXXVIII Italian Antarctic expedition |
title_sort |
oceanography of the edisto inlet (western ross sea): first results from the xxxviii italian antarctic expedition |
publishDate |
2023 |
url |
https://hdl.handle.net/11568/1195947 |
long_lat |
ENVELOPE(-67.133,-67.133,-68.217,-68.217) ENVELOPE(170.083,170.083,-72.333,-72.333) |
geographic |
Antarctic Antarctic Peninsula Edisto Edisto Inlet Ross Sea The Antarctic Victoria Land |
geographic_facet |
Antarctic Antarctic Peninsula Edisto Edisto Inlet Ross Sea The Antarctic Victoria Land |
genre |
Antarc* Antarctic Antarctic Peninsula Ross Sea Sea ice Victoria Land |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ross Sea Sea ice Victoria Land |
op_relation |
ispartofbook:IV Ross Sea Conference IV Ross Sea Conference https://hdl.handle.net/11568/1195947 |
_version_ |
1792046470245908480 |