Proceedings of the Ocean Drilling Program Volume 175 Initial Reports: Benguela Current, Sites 1075–1087
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| Format: | Recurso digital |
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1998
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| _version_ | 1866901204103069696 |
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| author | Wefer, G. Berger, W.H. Richter, C. The Leg 175 Science Party |
| author_facet | Wefer, G. Berger, W.H. Richter, C. The Leg 175 Science Party |
| contents | <p>This Initial Reports volume covers Leg 175 of the cruises of the Drilling Vessel <em>JOIDES Resolution</em>, Las Palmas, Canary Islands, to Cape Town, South Africa, Sites 1075–1087, 9 August–8 October 1997.</p> <p>During Leg 175, 13 sites were occupied off the western coast of Africa (Congo, Angola, Namibia, and South Africa) and 40 holes were drilled using advanced hydraulic piston coring and the extended core barrel method. The goal is to reconstruct the late Neogene history of the Benguela Current and the associated upwelling regimes between 5° and 32°S. The area investigated contains one of the great upwelling regions of the world, intermediate in intensity between the systems off Peru and California. The Angola-Benguela Current system (ABC-system) with its associated upwelling regions is characterized by organic-rich sediments that contain an outstanding record of productivity history, which can be read on a very fine scale. In addition, this environment provides an excellent setting for natural experiments in diagenesis. </p> <p>The individual transects selected for drilling within the ABC-system reflect a compromise among geographic coverage, accessibility, quality of sedimentary record, and time constraints. Variations in productivity are generated in different ways, within different geographic settings (off the Congo, near the Angola Dome, at the Walvis Ridge, and in the upwelling cells south of the ridge). One of the major goals is to document fluctuations in productivity in these different settings in relationship to large-scale climatic change within the late Neogene, including the onset of glacial cycles in the Northern Hemisphere. Another major goal is to tie fluctuations in oceanic conditions with the corresponding changes in climate on the adjacent continent. </p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_19354102 |
| institution | Zenodo |
| language | |
| publishDate | 1998 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Proceedings of the Ocean Drilling Program Volume 175 Initial Reports: Benguela Current, Sites 1075–1087 Wefer, G. Berger, W.H. Richter, C. The Leg 175 Science Party Ocean Drilling Program ODP JOIDES Resolution Initial Reports Leg 175 Site 1075 Site 1076 Site 1077 Site 1078 Site 1079 Site 1080 Site 1081 Site 1082 Site 1083 Site 1084 Site 1085 Site 1086 Site 1087 Benguela Current Angola-Benguela Current system Western Africa coast <p>This Initial Reports volume covers Leg 175 of the cruises of the Drilling Vessel <em>JOIDES Resolution</em>, Las Palmas, Canary Islands, to Cape Town, South Africa, Sites 1075–1087, 9 August–8 October 1997.</p> <p>During Leg 175, 13 sites were occupied off the western coast of Africa (Congo, Angola, Namibia, and South Africa) and 40 holes were drilled using advanced hydraulic piston coring and the extended core barrel method. The goal is to reconstruct the late Neogene history of the Benguela Current and the associated upwelling regimes between 5° and 32°S. The area investigated contains one of the great upwelling regions of the world, intermediate in intensity between the systems off Peru and California. The Angola-Benguela Current system (ABC-system) with its associated upwelling regions is characterized by organic-rich sediments that contain an outstanding record of productivity history, which can be read on a very fine scale. In addition, this environment provides an excellent setting for natural experiments in diagenesis. </p> <p>The individual transects selected for drilling within the ABC-system reflect a compromise among geographic coverage, accessibility, quality of sedimentary record, and time constraints. Variations in productivity are generated in different ways, within different geographic settings (off the Congo, near the Angola Dome, at the Walvis Ridge, and in the upwelling cells south of the ridge). One of the major goals is to document fluctuations in productivity in these different settings in relationship to large-scale climatic change within the late Neogene, including the onset of glacial cycles in the Northern Hemisphere. Another major goal is to tie fluctuations in oceanic conditions with the corresponding changes in climate on the adjacent continent. </p> |
| title | Proceedings of the Ocean Drilling Program Volume 175 Initial Reports: Benguela Current, Sites 1075–1087 |
| topic | Ocean Drilling Program ODP JOIDES Resolution Initial Reports Leg 175 Site 1075 Site 1076 Site 1077 Site 1078 Site 1079 Site 1080 Site 1081 Site 1082 Site 1083 Site 1084 Site 1085 Site 1086 Site 1087 Benguela Current Angola-Benguela Current system Western Africa coast |
| url | https://doi.org/10.5281/zenodo.19354102 |