Past and active biogeochemical processes in the Kveithola trough (NW Barents Sea)
The Arctic Ocean plays a key role in sequestrating the carbon dioxide (the greenhouse gas mainly responsible of global climate change) from the atmosphere. However, the melting of sea ice and the release of the huge amounts of methane stored in Arctic marine sediments and permafrost have uncertain f...
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ftunivsiena:oai:usiena-air.unisi.it:11365/1089134 2024-01-28T10:03:04+01:00 Past and active biogeochemical processes in the Kveithola trough (NW Barents Sea) Bazzaro Matteo Bazzaro, Matteo TALARICO, FRANCO MARIA 2019 http://hdl.handle.net/11365/1089134 eng eng Università degli Studi di Siena numberofpages:128 http://hdl.handle.net/11365/1089134 Arctic Ocean Barents Sea Carbon cycle Nitrogen Sulphur Settore GEO/08 - Geochimica e Vulcanologia info:eu-repo/semantics/doctoralThesis 2019 ftunivsiena 2024-01-02T23:23:22Z The Arctic Ocean plays a key role in sequestrating the carbon dioxide (the greenhouse gas mainly responsible of global climate change) from the atmosphere. However, the melting of sea ice and the release of the huge amounts of methane stored in Arctic marine sediments and permafrost have uncertain feedbacks on the Arctic marine carbon cycle. Therefore, in order to refine the future climate modelling, it is of primary importance to promote regional studies on carbon dynamics in the Arctic areas. In following this approach, studies on the interaction of carbon with chemical elements like nitrogen and sulphur in marine sediments are fundamental to the understanding of the biogeochemical cycling of these elements. This research is focused on better defining the carbon-related biogeochemical processes occurring in post-glacial sediments collected from the Kveithola trough, a glacigenic depression located at the boundary of the NW Barents Sea’s continental margin. The Kveithola trough is influenced by strong marine bottom currents, but its inner part, where active methane seepages have been recently detected, appears today as an apparently stagnant and possibly chemosynthetic environment. Thus, in order to give a contribution in clarifying what can be the local and global impact of this kind of environment in terms of carbon cycle, the aim of this PhD project was to investigate past and active dynamics of sedimentary carbon, nitrogen and sulphur in this depositional system. Doctoral or Postdoctoral Thesis Arctic Arctic Ocean Barents Sea Climate change Ice permafrost Sea ice Università degli Studi di Siena: USiena air Arctic Arctic Ocean Barents Sea |
institution |
Open Polar |
collection |
Università degli Studi di Siena: USiena air |
op_collection_id |
ftunivsiena |
language |
English |
topic |
Arctic Ocean Barents Sea Carbon cycle Nitrogen Sulphur Settore GEO/08 - Geochimica e Vulcanologia |
spellingShingle |
Arctic Ocean Barents Sea Carbon cycle Nitrogen Sulphur Settore GEO/08 - Geochimica e Vulcanologia Bazzaro Matteo Past and active biogeochemical processes in the Kveithola trough (NW Barents Sea) |
topic_facet |
Arctic Ocean Barents Sea Carbon cycle Nitrogen Sulphur Settore GEO/08 - Geochimica e Vulcanologia |
description |
The Arctic Ocean plays a key role in sequestrating the carbon dioxide (the greenhouse gas mainly responsible of global climate change) from the atmosphere. However, the melting of sea ice and the release of the huge amounts of methane stored in Arctic marine sediments and permafrost have uncertain feedbacks on the Arctic marine carbon cycle. Therefore, in order to refine the future climate modelling, it is of primary importance to promote regional studies on carbon dynamics in the Arctic areas. In following this approach, studies on the interaction of carbon with chemical elements like nitrogen and sulphur in marine sediments are fundamental to the understanding of the biogeochemical cycling of these elements. This research is focused on better defining the carbon-related biogeochemical processes occurring in post-glacial sediments collected from the Kveithola trough, a glacigenic depression located at the boundary of the NW Barents Sea’s continental margin. The Kveithola trough is influenced by strong marine bottom currents, but its inner part, where active methane seepages have been recently detected, appears today as an apparently stagnant and possibly chemosynthetic environment. Thus, in order to give a contribution in clarifying what can be the local and global impact of this kind of environment in terms of carbon cycle, the aim of this PhD project was to investigate past and active dynamics of sedimentary carbon, nitrogen and sulphur in this depositional system. |
author2 |
Bazzaro, Matteo TALARICO, FRANCO MARIA |
format |
Doctoral or Postdoctoral Thesis |
author |
Bazzaro Matteo |
author_facet |
Bazzaro Matteo |
author_sort |
Bazzaro Matteo |
title |
Past and active biogeochemical processes in the Kveithola trough (NW Barents Sea) |
title_short |
Past and active biogeochemical processes in the Kveithola trough (NW Barents Sea) |
title_full |
Past and active biogeochemical processes in the Kveithola trough (NW Barents Sea) |
title_fullStr |
Past and active biogeochemical processes in the Kveithola trough (NW Barents Sea) |
title_full_unstemmed |
Past and active biogeochemical processes in the Kveithola trough (NW Barents Sea) |
title_sort |
past and active biogeochemical processes in the kveithola trough (nw barents sea) |
publisher |
Università degli Studi di Siena |
publishDate |
2019 |
url |
http://hdl.handle.net/11365/1089134 |
geographic |
Arctic Arctic Ocean Barents Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea |
genre |
Arctic Arctic Ocean Barents Sea Climate change Ice permafrost Sea ice |
genre_facet |
Arctic Arctic Ocean Barents Sea Climate change Ice permafrost Sea ice |
op_relation |
numberofpages:128 http://hdl.handle.net/11365/1089134 |
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1789328411585413120 |