Age model, isotope analyses, geochemical measurements and grain size analyses of sediment core GeoB9508-5 from the Senegal River Mouth

Autoria(s): Mulitza, Stefan; Prange, Matthias; Stuut, Jan-Berend W; Zabel, Matthias; von Dobeneck, Tilo; Itambi, Achakie C; Nizou, Jean; Schulz, Michael; Wefer, Gerold
Cobertura

LATITUDE: 15.498333 * LONGITUDE: -17.948000 * DATE/TIME START: 2005-06-15T13:51:00 * DATE/TIME END: 2005-06-15T13:51:00
Data(s)

25/08/2009
Resumo

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.
Formato

application/zip, 5 datasets
Identificador

https://doi.pangaea.de/10.1594/PANGAEA.726789

doi:10.1594/PANGAEA.726789
Idioma(s)

en
Publicador

PANGAEA
Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted
Fonte

Supplement to: Mulitza, Stefan; Prange, Matthias; Stuut, Jan-Berend W; Zabel, Matthias; von Dobeneck, Tilo; Itambi, Achakie C; Nizou, Jean; Schulz, Michael; Wefer, Gerold (2008): Sahel megadroughts triggered by glacial slowdowns of Atlantic meridional overturning. Paleoceanography, 23(4), PA4206, doi:10.1029/2008PA001637
Palavras-Chave #0.412-0.375 µm; 0.452-0.412 µm; 0.496-0.452 µm; 0.545-0.496 µm; 0.598-0.545 µm; 0.656-0.598 µm; 0.721-0.656 µm; 0.791-0.721 µm; 0.868-0.791 µm; 0.948-1.041 mm; 0.953-0.868 µm; 1.041-1.143 mm; 1.047-0.953 µm; 1.143-1.255 mm; 1.149-1.047 µm; 1.255-1.377 mm; 1.261-1.149 µm; 1.377-1.512 mm; 1.384 -1.261 µm; 1.512-1.66 mm; 1.520-1.384 µm; 1.668-1.520 µm; 1.822-1.660 mm; 1.832-1.668 µm; 10.78-9.818 µm; 101.1-92.09 µm; 11.83-10.78 µm; 111.0-101.1 µm; 12.99-11.83 µm; 121.8-111.0 µm; 133.7-121.8 µm; 14.26-12.99 µm; 146.8-133.7 µm; 15.65-14.26 µm; 161.2-146.8 µm; 17.18-15.65 µm; 176.8-161.2 µm; 18.86-17.18 µm; 194.2-176.8 µm; 2.010-1.832 µm; 2.207-2.010 µm; 2.423-2.207 µm; 2.660-2.423 µm; 2.920-2.660 µm; 20.70-18.86 µm; 2000-1822 µm; 213.2-194.2 µm; 213.2-234.1 µm; 22.73-20.70 µm; 234.1-256.8 µm; 24.95-22.73 µm; 256.8-282.1 µm; 27.38-24.95 µm; 282.1-309.6 µm; 293; 3.205-2.920 µm; 3.519-3.205 µm; 3.862-3.519 µm; 30.07-27.38 µm; 309.6-339.8 µm; 33.01-30.07 µm; 339.8-373.1 µm; 36.24-33.01 µm; 373.1-409.6 µm; 39.77-36.24 µm; 4.240-3.863 µm; 4.655-4.240 µm; 409.6-449.7 µm; 43.67-39.78 µm; 449.7-493.6 µm; 47.94-43.67 µm; 493.6-541.9 µm; 5.110-4.655 µm; 5.610-5.110 µm; 52.62-47.94 µm; 541.9-594.9 µm; 57.77-52.62 µm; 594.9-653 µm; 6.158-5.611 µm; 6.761-6.158 µm; 63.41-57.77 µm; 653.0-716.9 µm; 69.62-63.41 µm; 7.421-6.760 µm; 716.9-786.9 µm; 76.42-69.61 µm; 786.9-863.9 µm; 8.147-7.421 µm; 8.943-8.147 µm; 83.89-76.42 µm; 863.9-948.2 µm; 9.818-8.943 µm; 92.09-83.90 µm; Age; AGE; Age, 14C AMS; Age, dated; Age, dated, error to older; Age, dated, error to younger; Age, radiocarbon; Age dated; Age e -; Age e +; Age model; Al/Si; Aluminium/Silicon ratio; Beckman Coulter Laser diffraction particle size analyzer LS 200; C. wuellerstorfi d13C; Calculated, see reference(s); Calendar years; Cal yrs; Center for Marine Environmental Sciences; Cibicidoides spp., d18O; Cibicidoides spp. d18O; Cibicidoides wuellerstorfi, d13C; Depth; DEPTH, sediment/rock; Fe/K; GeoB9508-5; Gravity corer (Kiel type); Iron/Potassium ratio; Label; Leibniz-Laboratory for Radiometric Dating and Stable Isotope Research, Kiel; M65/1; MARUM; Mass spectrometer Finnigan MAT 252; Meteor (1986); Sample code/label; see reference(s); Size fraction 0.412-0.375 µm; Size fraction 0.452-0.412 µm; Size fraction 0.496-0.452 µm; Size fraction 0.545-0.496 µm; Size fraction 0.598-0.545 µm; Size fraction 0.656-0.598 µm; Size fraction 0.721-0.656 µm; Size fraction 0.791-0.721 µm; Size fraction 0.868-0.791 µm; Size fraction 0.948-1.041 mm; Size fraction 0.953-0.868 µm; Size fraction 1.041-1.143 mm; Size fraction 1.047-0.953 µm; Size fraction 1.143-1.255 mm; Size fraction 1.149-1.047 µm; Size fraction 1.255-1.377 mm; Size fraction 1.261-1.149 µm; Size fraction 1.377-1.512 mm; Size fraction 1.384 -1.261 µm; Size fraction 1.512-1.660 mm; Size fraction 1.520-1.384 µm; Size fraction 1.668-1.520 µm; Size fraction 1.822-1.660 mm; Size fraction 1.832-1.668 µm; Size fraction 10.78-9.818 µm; Size fraction 101.1-92.09 µm; Size fraction 11.83-10.78 µm; Size fraction 111.0-101.1 µm; Size fraction 12.99-11.83 µm; Size fraction 121.8-111.0 µm; Size fraction 133.7-121.8 µm; Size fraction 14.26-12.99 µm; Size fraction 146.8-133.7 µm; Size fraction 15.65-14.26 µm; Size fraction 161.2-146.8 µm; Size fraction 17.18-15.65 µm; Size fraction 176.8-161.2 µm; Size fraction 18.86-17.18 µm; Size fraction 194.2-176.8 µm; Size fraction 2.000-1.822 mm; Size fraction 2.010-1.832 µm; Size fraction 2.207-2.010 µm; Size fraction 2.423-2.207 µm; Size fraction 2.660-2.423 µm; Size fraction 2.920-2.660 µm; Size fraction 20.70-18.86 µm; Size fraction 213.2-194.2 µm; Size fraction 213.2-234.1 µm; Size fraction 22.73-20.70 µm; Size fraction 234.1-256.8 µm; Size fraction 24.95-22.73 µm; Size fraction 256.8-282.1 µm; Size fraction 27.38-24.95 µm; Size fraction 282.1-309.6 µm; Size fraction 3.205-2.920 µm; Size fraction 3.519-3.205 µm; Size fraction 3.862-3.519 µm; Size fraction 30.07-27.38 µm; Size fraction 309.6-339.8 µm; Size fraction 33.01-30.07 µm; Size fraction 339.8-373.1 µm; Size fraction 36.24-33.01 µm; Size fraction 373.1-409.6 µm; Size fraction 39.77-36.24 µm; Size fraction 4.240-3.863 µm; Size fraction 4.655-4.240 µm; Size fraction 409.6-449.7 µm; Size fraction 43.67-39.78 µm; Size fraction 449.7-493.6 µm; Size fraction 47.94-43.67 µm; Size fraction 493.6-541.9 µm; Size fraction 5.110-4.655 µm; Size fraction 5.610-5.110 µm; Size fraction 52.62-47.94 µm; Size fraction 541.9-594.9 µm; Size fraction 57.77-52.62 µm; Size fraction 594.9-653.0 µm; Size fraction 6.158-5.611 µm; Size fraction 6.761-6.158 µm; Size fraction 63.41-57.77 µm; Size fraction 653.0-716.9 µm; Size fraction 69.62-63.41 µm; Size fraction 7.421-6.760 µm; Size fraction 716.9-786.9 µm; Size fraction 76.42-69.61 µm; Size fraction 786.9-863.9 µm; Size fraction 8.147-7.421 µm; Size fraction 8.943-8.147 µm; Size fraction 83.89-76.42 µm; Size fraction 863.9-948.2 µm; Size fraction 9.818-8.943 µm; Size fraction 92.09-83.90 µm; SL
Tipo

Dataset
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