Reconstruction of oceanic currents and climate change in the Transkei Basin, South African gateway
Reflection seismics, sediment drifts, bottom currents. - The region south of South Africa has been a crucial gateway for large scale Thermohaline Circulations since late Eocene times. Here, three of the most important currents for maintaining the global heat exchange, namely the warm and surface rel...
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Niedersächsische Staats- und Universitätsbibliothek
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ftgbv:oai:gbv.de:opac-de-7:ppn:550931783 2023-05-15T16:02:33+02:00 Reconstruction of oceanic currents and climate change in the Transkei Basin, South African gateway Schlüter, Philip 2007 electronic Elektronische Ressource electronic resource remote Online-Ressource 76 p. = 4562 KB, text and images http://webdoc.sub.gwdg.de/ebook/dissts/Bremen/Schlueter2007.pdf http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000108446 ger ger Niedersächsische Staats- und Universitätsbibliothek Staats- und Universitätsbibliothek [Host] 551.4621524 551.6916524 ggo geo 2007 ftgbv 2016-12-25T23:09:16Z Reflection seismics, sediment drifts, bottom currents. - The region south of South Africa has been a crucial gateway for large scale Thermohaline Circulations since late Eocene times. Here, three of the most important currents for maintaining the global heat exchange, namely the warm and surface related Agulhas Current (AC), and the cold and denser North Atlantic Deep Water (NADW) as well as the Atlantic Bottom Water (AABW), flow around South Africa. Due to the special tectonic and geologic situation, a huge amount of the deep and bottom water masses that flow around South Africa have to pass the narrow Agulhas Passage, located between the South African continental shelf and the submarine Agulhas Plateau. As a result, the sedimentary infill of the Transkei Basin, which is located east of the Agulhas Plateau, has been predominantly influenced by NADW and AABW activity since ~36 Ma. Via the analysis of this sedimentary infill, a palaeo current reconstruction of (proto-) NADW and (proto-) AABW revealed changing flow paths and flow strengths since then. These variations in current attributes were triggered by large scale effects, such as the opening of the Tasman Gateway and the Drake Passage in the Late Eocene, or the closure of the Isthmus of Panama in the Pliocene. A more detailed analysis of the Transkei Basin's depocentre locations and interface outlines resulted in a palaeo flow path reconstruction for this region. Moreover, palaeo climate conditions from the Late Cretaceous were partially reconstructed . @Bremen, Univ., Diss., 2007 Other/Unknown Material Drake Passage NADW North Atlantic Deep Water North Atlantic Georg-August-Universität Göttingen: GOEDOC Drake Passage |
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Georg-August-Universität Göttingen: GOEDOC |
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German |
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551.4621524 551.6916524 ggo geo |
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551.4621524 551.6916524 ggo geo Reconstruction of oceanic currents and climate change in the Transkei Basin, South African gateway |
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551.4621524 551.6916524 ggo geo |
description |
Reflection seismics, sediment drifts, bottom currents. - The region south of South Africa has been a crucial gateway for large scale Thermohaline Circulations since late Eocene times. Here, three of the most important currents for maintaining the global heat exchange, namely the warm and surface related Agulhas Current (AC), and the cold and denser North Atlantic Deep Water (NADW) as well as the Atlantic Bottom Water (AABW), flow around South Africa. Due to the special tectonic and geologic situation, a huge amount of the deep and bottom water masses that flow around South Africa have to pass the narrow Agulhas Passage, located between the South African continental shelf and the submarine Agulhas Plateau. As a result, the sedimentary infill of the Transkei Basin, which is located east of the Agulhas Plateau, has been predominantly influenced by NADW and AABW activity since ~36 Ma. Via the analysis of this sedimentary infill, a palaeo current reconstruction of (proto-) NADW and (proto-) AABW revealed changing flow paths and flow strengths since then. These variations in current attributes were triggered by large scale effects, such as the opening of the Tasman Gateway and the Drake Passage in the Late Eocene, or the closure of the Isthmus of Panama in the Pliocene. A more detailed analysis of the Transkei Basin's depocentre locations and interface outlines resulted in a palaeo flow path reconstruction for this region. Moreover, palaeo climate conditions from the Late Cretaceous were partially reconstructed . @Bremen, Univ., Diss., 2007 |
author2 |
Schlüter, Philip |
title |
Reconstruction of oceanic currents and climate change in the Transkei Basin, South African gateway |
title_short |
Reconstruction of oceanic currents and climate change in the Transkei Basin, South African gateway |
title_full |
Reconstruction of oceanic currents and climate change in the Transkei Basin, South African gateway |
title_fullStr |
Reconstruction of oceanic currents and climate change in the Transkei Basin, South African gateway |
title_full_unstemmed |
Reconstruction of oceanic currents and climate change in the Transkei Basin, South African gateway |
title_sort |
reconstruction of oceanic currents and climate change in the transkei basin, south african gateway |
publisher |
Niedersächsische Staats- und Universitätsbibliothek |
publishDate |
2007 |
url |
http://webdoc.sub.gwdg.de/ebook/dissts/Bremen/Schlueter2007.pdf http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000108446 |
geographic |
Drake Passage |
geographic_facet |
Drake Passage |
genre |
Drake Passage NADW North Atlantic Deep Water North Atlantic |
genre_facet |
Drake Passage NADW North Atlantic Deep Water North Atlantic |
_version_ |
1766398217579134976 |