Ocean circulation variability in the western South Atlantic during the Holocene
The western South Atlantic forms a key location in the global ocean conveyor belt. Different water masses formed in remote areas of the world extend into that area and generate a highly complex vertical stratification structure. In the upper ocean, this structure is dominated by the encounter of sou...
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/501 2023-05-15T14:04:15+02:00 Ocean circulation variability in the western South Atlantic during the Holocene Änderung der Ozeanzirkulation im westlichen Südatlantik während des Holozäns Voigt, Ines Henrich, Rüdiger Wefer, Gerold 2013-04-15 application/pdf https://media.suub.uni-bremen.de/handle/elib/501 https://nbn-resolving.org/urn:nbn:de:gbv:46-00103234-14 eng eng Universität Bremen FB5 Geowissenschaften https://media.suub.uni-bremen.de/handle/elib/501 urn:nbn:de:gbv:46-00103234-14 info:eu-repo/semantics/openAccess western South Atlantic Holocene Mar del Plata Canyon Brazil-Malvinas Confluence (BMC) Antarctic Intermediate Water (AAIW) 540 540 Chemistry ddc:540 Dissertation doctoralThesis 2013 ftsubbremen 2022-11-09T07:09:22Z The western South Atlantic forms a key location in the global ocean conveyor belt. Different water masses formed in remote areas of the world extend into that area and generate a highly complex vertical stratification structure. In the upper ocean, this structure is dominated by the encounter of southward flowing Brazil Current and northward-flowing Malvinas-(Falkland) Current generating one of the most energetic regions of the world ocean; the Brazil-Malvinas Confluence (BMC). In the deep ocean, the vertical stratification structure is dominated by contributions from intermediate- and deep water masses, including the Antarctic Intermediate Water (AAIW) which represents an active player in the Atlantic meridional overturning circulation (AMOC). The western South Atlantic is thus critical in understanding global ocean-climate changes. However, a detailed insight into the past remains a significant challenge in climate research due to the lack of high temporal resolution climate archives. The presented research of this thesis focuses on the surface- and intermediate water circulation in the western South Atlantic during the Holocene with special emphasize on sedimentation processes in the Mar del Plata Canyon. Results of this research highlight the extraordinary potential of a submarine canyon for reconstructing paleoceanographic and paleoclimatic changes with high temporal resolution, and clearly demonstrate that a good knowledge of sediment transport phenomena is an indispensable precondition for understanding paleoceanographic/paleoclimatic changes, particularly in such highly energetic current regimes as the western South Atlantic. Doctoral or Postdoctoral Thesis Antarc* Antarctic Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Antarctic The Antarctic |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
western South Atlantic Holocene Mar del Plata Canyon Brazil-Malvinas Confluence (BMC) Antarctic Intermediate Water (AAIW) 540 540 Chemistry ddc:540 |
spellingShingle |
western South Atlantic Holocene Mar del Plata Canyon Brazil-Malvinas Confluence (BMC) Antarctic Intermediate Water (AAIW) 540 540 Chemistry ddc:540 Voigt, Ines Ocean circulation variability in the western South Atlantic during the Holocene |
topic_facet |
western South Atlantic Holocene Mar del Plata Canyon Brazil-Malvinas Confluence (BMC) Antarctic Intermediate Water (AAIW) 540 540 Chemistry ddc:540 |
description |
The western South Atlantic forms a key location in the global ocean conveyor belt. Different water masses formed in remote areas of the world extend into that area and generate a highly complex vertical stratification structure. In the upper ocean, this structure is dominated by the encounter of southward flowing Brazil Current and northward-flowing Malvinas-(Falkland) Current generating one of the most energetic regions of the world ocean; the Brazil-Malvinas Confluence (BMC). In the deep ocean, the vertical stratification structure is dominated by contributions from intermediate- and deep water masses, including the Antarctic Intermediate Water (AAIW) which represents an active player in the Atlantic meridional overturning circulation (AMOC). The western South Atlantic is thus critical in understanding global ocean-climate changes. However, a detailed insight into the past remains a significant challenge in climate research due to the lack of high temporal resolution climate archives. The presented research of this thesis focuses on the surface- and intermediate water circulation in the western South Atlantic during the Holocene with special emphasize on sedimentation processes in the Mar del Plata Canyon. Results of this research highlight the extraordinary potential of a submarine canyon for reconstructing paleoceanographic and paleoclimatic changes with high temporal resolution, and clearly demonstrate that a good knowledge of sediment transport phenomena is an indispensable precondition for understanding paleoceanographic/paleoclimatic changes, particularly in such highly energetic current regimes as the western South Atlantic. |
author2 |
Henrich, Rüdiger Wefer, Gerold |
format |
Doctoral or Postdoctoral Thesis |
author |
Voigt, Ines |
author_facet |
Voigt, Ines |
author_sort |
Voigt, Ines |
title |
Ocean circulation variability in the western South Atlantic during the Holocene |
title_short |
Ocean circulation variability in the western South Atlantic during the Holocene |
title_full |
Ocean circulation variability in the western South Atlantic during the Holocene |
title_fullStr |
Ocean circulation variability in the western South Atlantic during the Holocene |
title_full_unstemmed |
Ocean circulation variability in the western South Atlantic during the Holocene |
title_sort |
ocean circulation variability in the western south atlantic during the holocene |
publisher |
Universität Bremen |
publishDate |
2013 |
url |
https://media.suub.uni-bremen.de/handle/elib/501 https://nbn-resolving.org/urn:nbn:de:gbv:46-00103234-14 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/501 urn:nbn:de:gbv:46-00103234-14 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766275277738999808 |