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| Main Authors: | , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2014
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| Online Access: | https://doi.org/10.1594/PANGAEA.840864 |
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| _version_ | 1867170467788357632 |
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| author | Romahn, Sarah Mackensen, Andreas Pätzold, Jürgen Kuhlmann, Holger |
| author_facet | Romahn, Sarah Mackensen, Andreas Pätzold, Jürgen Kuhlmann, Holger |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The Indian Ocean is an important component of the global thermohaline circulation system, as its western boundary currents feed the Agulhas Current, an integral part of the Atlantic meridional overturning circulation. However, Indian Ocean intermediate to deep-water variability on glacial-interglacial timescales is still a matter of debate. Here we provide stable carbon and oxygen isotopes and sediment elemental compositions of a sediment core from the edge of the Somali Basin. We demonstrate that throughout the past 600 kyr the intermediate western Indian Ocean was primarily bathed by Southern Ocean sourced Upper Circumpolar Deep Water (UCDW). This Southern Ocean sourced water mass enters the Somali Basin via the Amirante Passage or the Mozambique Channel and represents a downstream equivalent of South Atlantic UCDW. We cannot clearly account for the shortterm passage of Red Sea Water (RSW) at 1500 m water depth along the African continental margin, as previously suggested, on glacial-interglacial timescales. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_840864 |
| institution | PANGAEA |
| language | en |
| publishDate | 2014 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Stable oxygen and carbon isotopes and sediment geochemistry of sediment core GeoB12616-4 Romahn, Sarah Mackensen, Andreas Pätzold, Jürgen Kuhlmann, Holger AWI_Paleo; GeoB12616-4; Gravity corer (Kiel type); M75/2; M75/2_104-4; Meteor (1986); Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Rufiji River - Latham Island; SL The Indian Ocean is an important component of the global thermohaline circulation system, as its western boundary currents feed the Agulhas Current, an integral part of the Atlantic meridional overturning circulation. However, Indian Ocean intermediate to deep-water variability on glacial-interglacial timescales is still a matter of debate. Here we provide stable carbon and oxygen isotopes and sediment elemental compositions of a sediment core from the edge of the Somali Basin. We demonstrate that throughout the past 600 kyr the intermediate western Indian Ocean was primarily bathed by Southern Ocean sourced Upper Circumpolar Deep Water (UCDW). This Southern Ocean sourced water mass enters the Somali Basin via the Amirante Passage or the Mozambique Channel and represents a downstream equivalent of South Atlantic UCDW. We cannot clearly account for the shortterm passage of Red Sea Water (RSW) at 1500 m water depth along the African continental margin, as previously suggested, on glacial-interglacial timescales. |
| title | Stable oxygen and carbon isotopes and sediment geochemistry of sediment core GeoB12616-4 |
| topic | AWI_Paleo; GeoB12616-4; Gravity corer (Kiel type); M75/2; M75/2_104-4; Meteor (1986); Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Rufiji River - Latham Island; SL |
| url | https://doi.org/10.1594/PANGAEA.840864 |