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PANGAEA.
Data Publisher for Earth & Environmental Science

Weijers, Johan W H (2007): Methylation index of Branched Tetraethers (MBT) and Cyclization ratio of Branched Tetraethers (CBT), annual mean air temperature and soil pH of sediment core GeoB6518-1 in the Congo River basin. PANGAEA, https://doi.org/10.1594/PANGAEA.615247, Supplement to: Weijers, Johan W H; Schefuß, Enno; Schouten, Stefan; Sinninghe Damsté, Jaap S (2007): Coupled Thermal and Hydrological Evolution of Tropical Africa over the Last Deglaciation. Science, 315(5819), 1701-1704, https://doi.org/10.1126/science.1138131

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Abstract:
We analyzed the distribution of branched tetraether membrane lipids derived from soil bacteria in a marine sediment record that was recovered close to the Congo River outflow, and the results enabled us to reconstruct large-scale continental temperature changes in tropical Africa that span the past 25,000 years. Tropical African temperatures gradually increased from ~21° to 25°C over the last deglaciation, which is a larger warming than estimated for the tropical Atlantic Ocean. A direct comparison with sea-surface temperature estimates from the same core revealed that the land-sea temperature difference was, through the thermal pressure gradient, an important control on central African precipitation patterns.
Coverage:
Latitude: -5.588300 * Longitude: 11.221700
Date/Time Start: 2000-06-20T15:23:00 * Date/Time End: 2000-06-20T15:23:00
Minimum DEPTH, sediment/rock: 0.03 m * Maximum DEPTH, sediment/rock: 6.03 m
Event(s):
GeoB6518-1 * Latitude: -5.588300 * Longitude: 11.221700 * Date/Time: 2000-06-20T15:23:00 * Elevation: -962.0 m * Recovery: 7.41 m * Location: Congo Fan * Campaign: M47/3 * Basis: Meteor (1986) * Device: Gravity corer (Kiel type) (SL) * Comment: CC: olive mud
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DEPTH, sediment/rockDepthmGeocode
2AGEAgeka BPGeocode
3Methylation index of branched tetraethersMBTWeijers, Johan W HCalculated, see reference(s)
4Cyclization ratio of branched tetraethersCBTWeijers, Johan W HCalculated, see reference(s)
5pHpHWeijers, Johan W H
6Temperature, annual meanMAT°CWeijers, Johan W Hsee reference(s)
Size:
484 data points

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