Impact of melt water controlled material flux on the sedimentation in the western Baffin Bay and the circum-Greenland marginal seas
The Arctic is highly sensitive to present climate change and is known to be affected by higher degrees of warming than any other region. Since the Arctic is strongly linked to the global climate system by atmospheric and oceanic circulations, it is crucial to learn more about present and possible fu...
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Universität Bremen
2023
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/7927 2024-06-23T07:48:52+00:00 Impact of melt water controlled material flux on the sedimentation in the western Baffin Bay and the circum-Greenland marginal seas Hingst, Johanna Kasemann, Simone Chiessi, Cristiano Mazur 2023-06-08 application/pdf https://media.suub.uni-bremen.de/handle/elib/7927 https://doi.org/10.26092/elib/2985 https://nbn-resolving.org/urn:nbn:de:gbv:46-elib79279 eng eng Universität Bremen Fachbereich 05: Geowissenschaften (FB 05) https://media.suub.uni-bremen.de/handle/elib/7927 https://doi.org/10.26092/elib/2985 doi:10.26092/elib/2985 urn:nbn:de:gbv:46-elib79279 info:eu-repo/semantics/openAccess CC BY 4.0 (Attribution) https://creativecommons.org/licenses/by/4.0/ Baffin Bay Radiogenic isotopes sediment provenance Holocene Last Deglaciation 550 550 Earth sciences and geology ddc:550 Dissertation doctoralThesis 2023 ftsubbremen https://doi.org/10.26092/elib/2985 2024-05-29T06:29:28Z The Arctic is highly sensitive to present climate change and is known to be affected by higher degrees of warming than any other region. Since the Arctic is strongly linked to the global climate system by atmospheric and oceanic circulations, it is crucial to learn more about present and possible future environmental changes in the region. Ice sheets, ice caps, and glaciers play an important role in the Arctic system. To learn more about their sensitivity to climate change, the reconstruction of past ice sheet deglaciation patterns is a helpful tool. An interesting research area for ice sheet reconstruction is the Baffin Bay, which is located between Greenland and the Canadian Arctic and connects the Arctic Ocean with the Labrador Sea. Provenance studies on marine sediments from western Baffin Bay can provide insight into past changes in sediment supply and transport pathways and thus give valuable information about regional ice sheet dynamics and palaeoceanographic conditions. This study analyzed the radiogenic Sr, Nd, and Pb isotope composition of the detrital sediment fraction of four sediment cores from western and northern Baffin Bay and the Canadian Arctic Archipelago. Overall, the data of the sediment cores provide new details on the late Pleistocene and Holocene deglaciation history of the Laurentide Ice Sheet and Innuitian Ice Sheet and related changes in sediment transport processes in western and northern Baffin Bay. Further, the identification of changing sediment provenance of detrital material in marine sediment cores from northern Baffin Bay and Barrow Strait helped to determine better the timing of the opening of these Arctic gateways and the inflow of Arctic waters into Baffin Bay. Doctoral or Postdoctoral Thesis Arctic Archipelago Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Canadian Arctic Archipelago Climate change Greenland Ice Sheet Labrador Sea Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Arctic Arctic Ocean Baffin Bay Canadian Arctic Archipelago Greenland Barrow Strait ENVELOPE(-94.168,-94.168,74.402,74.402) |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
Baffin Bay Radiogenic isotopes sediment provenance Holocene Last Deglaciation 550 550 Earth sciences and geology ddc:550 |
spellingShingle |
Baffin Bay Radiogenic isotopes sediment provenance Holocene Last Deglaciation 550 550 Earth sciences and geology ddc:550 Hingst, Johanna Impact of melt water controlled material flux on the sedimentation in the western Baffin Bay and the circum-Greenland marginal seas |
topic_facet |
Baffin Bay Radiogenic isotopes sediment provenance Holocene Last Deglaciation 550 550 Earth sciences and geology ddc:550 |
description |
The Arctic is highly sensitive to present climate change and is known to be affected by higher degrees of warming than any other region. Since the Arctic is strongly linked to the global climate system by atmospheric and oceanic circulations, it is crucial to learn more about present and possible future environmental changes in the region. Ice sheets, ice caps, and glaciers play an important role in the Arctic system. To learn more about their sensitivity to climate change, the reconstruction of past ice sheet deglaciation patterns is a helpful tool. An interesting research area for ice sheet reconstruction is the Baffin Bay, which is located between Greenland and the Canadian Arctic and connects the Arctic Ocean with the Labrador Sea. Provenance studies on marine sediments from western Baffin Bay can provide insight into past changes in sediment supply and transport pathways and thus give valuable information about regional ice sheet dynamics and palaeoceanographic conditions. This study analyzed the radiogenic Sr, Nd, and Pb isotope composition of the detrital sediment fraction of four sediment cores from western and northern Baffin Bay and the Canadian Arctic Archipelago. Overall, the data of the sediment cores provide new details on the late Pleistocene and Holocene deglaciation history of the Laurentide Ice Sheet and Innuitian Ice Sheet and related changes in sediment transport processes in western and northern Baffin Bay. Further, the identification of changing sediment provenance of detrital material in marine sediment cores from northern Baffin Bay and Barrow Strait helped to determine better the timing of the opening of these Arctic gateways and the inflow of Arctic waters into Baffin Bay. |
author2 |
Kasemann, Simone Chiessi, Cristiano Mazur |
format |
Doctoral or Postdoctoral Thesis |
author |
Hingst, Johanna |
author_facet |
Hingst, Johanna |
author_sort |
Hingst, Johanna |
title |
Impact of melt water controlled material flux on the sedimentation in the western Baffin Bay and the circum-Greenland marginal seas |
title_short |
Impact of melt water controlled material flux on the sedimentation in the western Baffin Bay and the circum-Greenland marginal seas |
title_full |
Impact of melt water controlled material flux on the sedimentation in the western Baffin Bay and the circum-Greenland marginal seas |
title_fullStr |
Impact of melt water controlled material flux on the sedimentation in the western Baffin Bay and the circum-Greenland marginal seas |
title_full_unstemmed |
Impact of melt water controlled material flux on the sedimentation in the western Baffin Bay and the circum-Greenland marginal seas |
title_sort |
impact of melt water controlled material flux on the sedimentation in the western baffin bay and the circum-greenland marginal seas |
publisher |
Universität Bremen |
publishDate |
2023 |
url |
https://media.suub.uni-bremen.de/handle/elib/7927 https://doi.org/10.26092/elib/2985 https://nbn-resolving.org/urn:nbn:de:gbv:46-elib79279 |
long_lat |
ENVELOPE(-94.168,-94.168,74.402,74.402) |
geographic |
Arctic Arctic Ocean Baffin Bay Canadian Arctic Archipelago Greenland Barrow Strait |
geographic_facet |
Arctic Arctic Ocean Baffin Bay Canadian Arctic Archipelago Greenland Barrow Strait |
genre |
Arctic Archipelago Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Canadian Arctic Archipelago Climate change Greenland Ice Sheet Labrador Sea |
genre_facet |
Arctic Archipelago Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Canadian Arctic Archipelago Climate change Greenland Ice Sheet Labrador Sea |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/7927 https://doi.org/10.26092/elib/2985 doi:10.26092/elib/2985 urn:nbn:de:gbv:46-elib79279 |
op_rights |
info:eu-repo/semantics/openAccess CC BY 4.0 (Attribution) https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.26092/elib/2985 |
_version_ |
1802639188580892672 |