10.1594/PANGAEA.833739Adkins, Jess FJess FAdkins0000-0002-3174-5190deMenocal, Peter BPeter BdeMenocal0000-0002-7191-717XEshel, GidonGidonEshelPANGAEA2006DEPTH, sediment/rockAGEThorium-230Thorium-230, standard deviationThorium-232Thorium-232, standard deviationUranium-238Uranium-238, standard deviationThorium-230 excessThorium-230 excess, standard deviationDrilling/drill rigInductively coupled plasma - mass spectrometry (ICP-MS)Leg108Joides ResolutionOcean Drilling Program (ODP)1986-03-08T00:45:00/1986-03-08T16:00:00Supplementary Dataset10.1029/2005PA00120010.1029/2006PA001388992 data pointstext/tab-separated-valuesCreative Commons Attribution 3.0 UnportedUsing a high-resolution 230Th normalized record of sediment flux, we document the deglacial and Holocene history of North African aridity and coastal upwelling at Ocean Drilling Program Hole 658C. At both the end of the Younger Dryas and after the 8.2 ka event, there are significant drops in terrigenous accumulation at our site, indicating an increase in the monsoon moisture flux over Africa at this time. At 5.5 ka, there is an abrupt end to the "African humid period" and a return to stronger upwelling conditions. For carbonate and opal fluxes the 230Th normalization completely changes the shape of each record based on percentage variations alone. This site is a clear example of how variations in one sediment component can obscure changes in the others, and it demonstrates the need for radionuclide measurements more generally in paleoceanography. By taking our new records and a large amount of previous data from this site we conclude that increases in African moisture are tightly coupled to decreases in coastal upwelling intensity.Supplement to: Adkins, Jess F; deMenocal, Peter B; Eshel, Gidon (2006): The “African humid period” and the record of marine upwelling from excess 230Th in Ocean Drilling Program Hole 658C. Paleoceanography, 21(4), PA4203-18.580820.7492Canarias Sea