Paleoenviromental changes during the last 2 ka BP in the Eastern Side of Fram Strait.
Polar regions regulate the climate through the heat exchange between ocean and atmosphere, the sea ice formation or melting, and bottom water formation. Lately, the scientific community has been focusing on the study of the last 2000 years. This interval gives information about climate natural varia...
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Società Geologica Italiana
2021
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ftunivpisairis:oai:arpi.unipi.it:11568/1164053 2024-02-27T08:36:12+00:00 Paleoenviromental changes during the last 2 ka BP in the Eastern Side of Fram Strait. Torricella F. Gariboldi K. Gamboa Sojo V. M. Douss N. Lucchi R. G. Morigi C. Domenico Calcaterra, Caterina Morigi, Fabio Massimo Petti, Bernardo Carmina, Karen Gariboldi. Torricella, F. Gariboldi, K. Gamboa Sojo, V. M. Douss, N. Lucchi, R. G. Morigi, C. 2021 ELETTRONICO https://hdl.handle.net/11568/1164053 https://doi.org/10.3301/ABSGI.2021.02 https://www.socgeol.it/N3668/paleoarc-2021-2nd-international-conference-on-processes-and-palaeo-environmental-changes-in-the-arctic-from-past-to-present.html eng eng Società Geologica Italiana country:ITA place:Roma ispartofbook:Abstract BOOK - PalaeoArc 2021, 2nd International Conference on ‘Processes and Palaeo-environmental changes in the Arctic: from past to present PALEOARC 2021 - 2nd International Conference on 'Processes and Palaeo-environmental changes in the Arctic from past to present' firstpage:91 lastpage:91 numberofpages:1 serie:ABSTRACT BOOK alleditors:Domenico Calcaterra, Caterina Morigi, Fabio Massimo Petti, Bernardo Carmina, Karen Gariboldi. https://hdl.handle.net/11568/1164053 doi:10.3301/ABSGI.2021.02 https://www.socgeol.it/N3668/paleoarc-2021-2nd-international-conference-on-processes-and-palaeo-environmental-changes-in-the-arctic-from-past-to-present.html info:eu-repo/semantics/openAccess Micropaleontology Fram Strait 2 ka BP paleoenvironmental changes info:eu-repo/semantics/conferenceObject 2021 ftunivpisairis https://doi.org/10.3301/ABSGI.2021.02 2024-01-31T17:40:04Z Polar regions regulate the climate through the heat exchange between ocean and atmosphere, the sea ice formation or melting, and bottom water formation. Lately, the scientific community has been focusing on the study of the last 2000 years. This interval gives information about climate natural variability versus change induced by human activity. Moreover, the studies of environmental changes recorded in this period offer the possibility to understand how our climate may evolve in the near future. This study is focused on the last 2 ka BP and has the aim to understand the paleoenvironmental variations in the eastern side of Fram Strait, through multidisciplinary micropaleontological and sedimentological analyses, focussing on the diatom assemblages. Two long Calypso cores GS191-01 PC (19.68 m) and GS191-02 PC (17.37 m) were collected on the Bellsund and Isfjorden Drift, during the expedition of RV G.O. Sars (5th–15th June 2014), in the framework of the project Eurofleets-2 PREPARED. Here we present the study of the first 80 cm for core GS191-01PC and the first 18 cm for core GS191-02 PC corresponding to the last 2 ka years BP. The investigated sedimentary sequence is dominated by muddy, bioturbated sediments with very rare/sparse IRD (Ice Rafted Debris). The Diatom assemblage was analysed every 2-cm, corresponding to a resolution of 30 years for GS191-01PC and at every 1-cm in core GS191-02PC, corresponding to a resolution of 126 year. On the basis of the age model proposed by Caricchi et al. (2019), the multi-proxy analyses on the diatoms and foraminifera assemblages, and sedimentological data, allowed us to distinguish in the record four different climatic periods indicated as Units. Unit A (2000 - 1500 cal yr BP) is the older, and indicates relatively warm conditions, suggesting the influence of warm water with a cooling period between between 1800 to 1700 cal yr BP, characterized by increased sea ice coverage and the presence of cold water masses. In unit B (1500 - 1300 cal yr BP) is period of cooler ... Conference Object Arctic Bellsund Fram Strait Sea ice ARPI - Archivio della Ricerca dell'Università di Pisa Bellsund ENVELOPE(14.226,14.226,77.662,77.662) |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
topic |
Micropaleontology Fram Strait 2 ka BP paleoenvironmental changes |
spellingShingle |
Micropaleontology Fram Strait 2 ka BP paleoenvironmental changes Torricella F. Gariboldi K. Gamboa Sojo V. M. Douss N. Lucchi R. G. Morigi C. Paleoenviromental changes during the last 2 ka BP in the Eastern Side of Fram Strait. |
topic_facet |
Micropaleontology Fram Strait 2 ka BP paleoenvironmental changes |
description |
Polar regions regulate the climate through the heat exchange between ocean and atmosphere, the sea ice formation or melting, and bottom water formation. Lately, the scientific community has been focusing on the study of the last 2000 years. This interval gives information about climate natural variability versus change induced by human activity. Moreover, the studies of environmental changes recorded in this period offer the possibility to understand how our climate may evolve in the near future. This study is focused on the last 2 ka BP and has the aim to understand the paleoenvironmental variations in the eastern side of Fram Strait, through multidisciplinary micropaleontological and sedimentological analyses, focussing on the diatom assemblages. Two long Calypso cores GS191-01 PC (19.68 m) and GS191-02 PC (17.37 m) were collected on the Bellsund and Isfjorden Drift, during the expedition of RV G.O. Sars (5th–15th June 2014), in the framework of the project Eurofleets-2 PREPARED. Here we present the study of the first 80 cm for core GS191-01PC and the first 18 cm for core GS191-02 PC corresponding to the last 2 ka years BP. The investigated sedimentary sequence is dominated by muddy, bioturbated sediments with very rare/sparse IRD (Ice Rafted Debris). The Diatom assemblage was analysed every 2-cm, corresponding to a resolution of 30 years for GS191-01PC and at every 1-cm in core GS191-02PC, corresponding to a resolution of 126 year. On the basis of the age model proposed by Caricchi et al. (2019), the multi-proxy analyses on the diatoms and foraminifera assemblages, and sedimentological data, allowed us to distinguish in the record four different climatic periods indicated as Units. Unit A (2000 - 1500 cal yr BP) is the older, and indicates relatively warm conditions, suggesting the influence of warm water with a cooling period between between 1800 to 1700 cal yr BP, characterized by increased sea ice coverage and the presence of cold water masses. In unit B (1500 - 1300 cal yr BP) is period of cooler ... |
author2 |
Domenico Calcaterra, Caterina Morigi, Fabio Massimo Petti, Bernardo Carmina, Karen Gariboldi. Torricella, F. Gariboldi, K. Gamboa Sojo, V. M. Douss, N. Lucchi, R. G. Morigi, C. |
format |
Conference Object |
author |
Torricella F. Gariboldi K. Gamboa Sojo V. M. Douss N. Lucchi R. G. Morigi C. |
author_facet |
Torricella F. Gariboldi K. Gamboa Sojo V. M. Douss N. Lucchi R. G. Morigi C. |
author_sort |
Torricella F. |
title |
Paleoenviromental changes during the last 2 ka BP in the Eastern Side of Fram Strait. |
title_short |
Paleoenviromental changes during the last 2 ka BP in the Eastern Side of Fram Strait. |
title_full |
Paleoenviromental changes during the last 2 ka BP in the Eastern Side of Fram Strait. |
title_fullStr |
Paleoenviromental changes during the last 2 ka BP in the Eastern Side of Fram Strait. |
title_full_unstemmed |
Paleoenviromental changes during the last 2 ka BP in the Eastern Side of Fram Strait. |
title_sort |
paleoenviromental changes during the last 2 ka bp in the eastern side of fram strait. |
publisher |
Società Geologica Italiana |
publishDate |
2021 |
url |
https://hdl.handle.net/11568/1164053 https://doi.org/10.3301/ABSGI.2021.02 https://www.socgeol.it/N3668/paleoarc-2021-2nd-international-conference-on-processes-and-palaeo-environmental-changes-in-the-arctic-from-past-to-present.html |
long_lat |
ENVELOPE(14.226,14.226,77.662,77.662) |
geographic |
Bellsund |
geographic_facet |
Bellsund |
genre |
Arctic Bellsund Fram Strait Sea ice |
genre_facet |
Arctic Bellsund Fram Strait Sea ice |
op_relation |
ispartofbook:Abstract BOOK - PalaeoArc 2021, 2nd International Conference on ‘Processes and Palaeo-environmental changes in the Arctic: from past to present PALEOARC 2021 - 2nd International Conference on 'Processes and Palaeo-environmental changes in the Arctic from past to present' firstpage:91 lastpage:91 numberofpages:1 serie:ABSTRACT BOOK alleditors:Domenico Calcaterra, Caterina Morigi, Fabio Massimo Petti, Bernardo Carmina, Karen Gariboldi. https://hdl.handle.net/11568/1164053 doi:10.3301/ABSGI.2021.02 https://www.socgeol.it/N3668/paleoarc-2021-2nd-international-conference-on-processes-and-palaeo-environmental-changes-in-the-arctic-from-past-to-present.html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3301/ABSGI.2021.02 |
_version_ |
1792043198047059968 |