Age model, isotope analyses, geochemical measurements and grain size analyses of sediment core GeoB9508-5 from the Senegal River Mouth
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2009
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| _version_ | 1867172221458317312 |
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| author | Mulitza, Stefan Prange, Matthias Stuut, Jan-Berend W Zabel, Matthias von Dobeneck, Tilo Itambi, Achakie C Nizou, Jean Schulz, Michael Wefer, Gerold |
| author_facet | Mulitza, Stefan Prange, Matthias Stuut, Jan-Berend W Zabel, Matthias von Dobeneck, Tilo Itambi, Achakie C Nizou, Jean Schulz, Michael Wefer, Gerold |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The influence of the large-scale ocean circulation on Sahel rainfall is elusive because of the shortness of the observational record. We reconstructed the history of eolian and fluvial sedimentation on the continental slope off Senegal during the past 57,000 years. Our data show that abrupt onsets of arid conditions in the West African Sahel were linked to cold North Atlantic sea surface temperatures during times of reduced meridional overturning circulation associated with Heinrich Stadials. Climate modeling suggests that this drying is induced by a southward shift of the West African monsoon trough in conjunction with an intensification and southward expansion of the midtropospheric African Easterly Jet. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_726789 |
| institution | PANGAEA |
| language | en |
| publishDate | 2009 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Age model, isotope analyses, geochemical measurements and grain size analyses of sediment core GeoB9508-5 from the Senegal River Mouth Mulitza, Stefan Prange, Matthias Stuut, Jan-Berend W Zabel, Matthias von Dobeneck, Tilo Itambi, Achakie C Nizou, Jean Schulz, Michael Wefer, Gerold 293; Center for Marine Environmental Sciences; GeoB9508-5; Gravity corer (Kiel type); M65/1; MARUM; Meteor (1986); SL The influence of the large-scale ocean circulation on Sahel rainfall is elusive because of the shortness of the observational record. We reconstructed the history of eolian and fluvial sedimentation on the continental slope off Senegal during the past 57,000 years. Our data show that abrupt onsets of arid conditions in the West African Sahel were linked to cold North Atlantic sea surface temperatures during times of reduced meridional overturning circulation associated with Heinrich Stadials. Climate modeling suggests that this drying is induced by a southward shift of the West African monsoon trough in conjunction with an intensification and southward expansion of the midtropospheric African Easterly Jet. |
| title | Age model, isotope analyses, geochemical measurements and grain size analyses of sediment core GeoB9508-5 from the Senegal River Mouth |
| topic | 293; Center for Marine Environmental Sciences; GeoB9508-5; Gravity corer (Kiel type); M65/1; MARUM; Meteor (1986); SL |
| url | https://doi.org/10.1594/PANGAEA.726789 |