SEDIMENT EROSION ON THE SOUTHERN SOUTH AFRICAN CONTINENTAL MARGIN: INDICATIONS FOR THE PATHS OF OCEANIC CURRENTS?
Seismic profiles extending from the southern South African shelf into the deep sea reveal a strong erosional activity, which affects large parts of the continental margin. Recent to Oligocene sequences, and in places the whole sedimentary column, appear to have been removed. Mass movements were cons...
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ftawi:oai:epic.awi.de:19703 2023-05-15T13:39:47+02:00 SEDIMENT EROSION ON THE SOUTHERN SOUTH AFRICAN CONTINENTAL MARGIN: INDICATIONS FOR THE PATHS OF OCEANIC CURRENTS? Uenzelmann-Neben, Gabriele Huhn, K. 2009 https://epic.awi.de/id/eprint/19703/ https://hdl.handle.net/10013/epic.31568 unknown Uenzelmann-Neben, G. orcid:0000-0002-0115-5923 and Huhn, K. (2009) SEDIMENT EROSION ON THE SOUTHERN SOUTH AFRICAN CONTINENTAL MARGIN: INDICATIONS FOR THE PATHS OF OCEANIC CURRENTS? , Sonne Statusseminar, Bremerhaven, Feb . hdl:10013/epic.31568 EPIC3Sonne Statusseminar, Bremerhaven, Feb, pp. 12-13 Conference notRev 2009 ftawi 2021-12-24T15:33:07Z Seismic profiles extending from the southern South African shelf into the deep sea reveal a strong erosional activity, which affects large parts of the continental margin. Recent to Oligocene sequences, and in places the whole sedimentary column, appear to have been removed. Mass movements were considered as the origin of this erosion. However, structures indicating slumping could only be identified in a few places, The erosional activity is confined to specific water depths, which correlate well with the activity levels of water masses observed here. We thus suggest that the Agulhas Current, Antarctic Intermediate Water, North Atlantic Deep Water, and Antarctic Bottomwater have intensively shaped the sedimentary sequences for a considerable period. It is difficult to estimate the duration of the erosion. Numerical simulation of sediment transport and erosion is needed to indicate the onset of the erosional activity. Conference Object Antarc* Antarctic North Atlantic Deep Water North Atlantic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Seismic profiles extending from the southern South African shelf into the deep sea reveal a strong erosional activity, which affects large parts of the continental margin. Recent to Oligocene sequences, and in places the whole sedimentary column, appear to have been removed. Mass movements were considered as the origin of this erosion. However, structures indicating slumping could only be identified in a few places, The erosional activity is confined to specific water depths, which correlate well with the activity levels of water masses observed here. We thus suggest that the Agulhas Current, Antarctic Intermediate Water, North Atlantic Deep Water, and Antarctic Bottomwater have intensively shaped the sedimentary sequences for a considerable period. It is difficult to estimate the duration of the erosion. Numerical simulation of sediment transport and erosion is needed to indicate the onset of the erosional activity. |
format |
Conference Object |
author |
Uenzelmann-Neben, Gabriele Huhn, K. |
spellingShingle |
Uenzelmann-Neben, Gabriele Huhn, K. SEDIMENT EROSION ON THE SOUTHERN SOUTH AFRICAN CONTINENTAL MARGIN: INDICATIONS FOR THE PATHS OF OCEANIC CURRENTS? |
author_facet |
Uenzelmann-Neben, Gabriele Huhn, K. |
author_sort |
Uenzelmann-Neben, Gabriele |
title |
SEDIMENT EROSION ON THE SOUTHERN SOUTH AFRICAN CONTINENTAL MARGIN: INDICATIONS FOR THE PATHS OF OCEANIC CURRENTS? |
title_short |
SEDIMENT EROSION ON THE SOUTHERN SOUTH AFRICAN CONTINENTAL MARGIN: INDICATIONS FOR THE PATHS OF OCEANIC CURRENTS? |
title_full |
SEDIMENT EROSION ON THE SOUTHERN SOUTH AFRICAN CONTINENTAL MARGIN: INDICATIONS FOR THE PATHS OF OCEANIC CURRENTS? |
title_fullStr |
SEDIMENT EROSION ON THE SOUTHERN SOUTH AFRICAN CONTINENTAL MARGIN: INDICATIONS FOR THE PATHS OF OCEANIC CURRENTS? |
title_full_unstemmed |
SEDIMENT EROSION ON THE SOUTHERN SOUTH AFRICAN CONTINENTAL MARGIN: INDICATIONS FOR THE PATHS OF OCEANIC CURRENTS? |
title_sort |
sediment erosion on the southern south african continental margin: indications for the paths of oceanic currents? |
publishDate |
2009 |
url |
https://epic.awi.de/id/eprint/19703/ https://hdl.handle.net/10013/epic.31568 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic North Atlantic Deep Water North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic Deep Water North Atlantic |
op_source |
EPIC3Sonne Statusseminar, Bremerhaven, Feb, pp. 12-13 |
op_relation |
Uenzelmann-Neben, G. orcid:0000-0002-0115-5923 and Huhn, K. (2009) SEDIMENT EROSION ON THE SOUTHERN SOUTH AFRICAN CONTINENTAL MARGIN: INDICATIONS FOR THE PATHS OF OCEANIC CURRENTS? , Sonne Statusseminar, Bremerhaven, Feb . hdl:10013/epic.31568 |
_version_ |
1766124698763001856 |