Marino, Gianluca; Zahn, Rainer; Ziegler, Martin; Purcell, Conor; Knorr, Gregor; Hall, Ian R; Ziveri, Patrizia; Elderfield, Henry (2013): Late Pliocene age models of Agulhas Plateau sediment cores. PANGAEA, https://doi.org/10.1594/PANGAEA.821046, Supplement to: Marino, G et al. (2013): Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene. Paleoceanography, 28(3), 599-606, https://doi.org/10.1002/palo.20038
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An ensemble of new, high-resolution records of surface ocean hydrography from the Indian-Atlantic oceanic gateway, south of Africa, demonstrates recurrent and high-amplitude salinity oscillations in the Agulhas Leakage area during the penultimate glacial-interglacial cycle. A series of millennial-scale salinification events, indicating strengthened salt leakage into the South Atlantic, appear to correlate with abrupt changes in the North Atlantic climate and Atlantic Meridional Overturning Circulation (AMOC). This interhemispheric coupling, which plausibly involved changes in the Hadley Cell and midlatitude westerlies that impacted the interocean transport at the tip of Africa, suggests that the Agulhas Leakage acted as a source of negative buoyancy for the perturbed AMOC, possibly aiding its return to full strength. Our finding points to the Indian-to-Atlantic salt transport as a potentially important modulator of the AMOC during the abrupt climate changes of the Late Pleistocene.
Median Latitude: -38.733333 * Median Longitude: 22.487500 * South-bound Latitude: -41.200000 * West-bound Longitude: 19.475000 * North-bound Latitude: -36.266667 * East-bound Longitude: 25.500000
Date/Time Start: 1996-09-29T00:00:00 * Date/Time End: 2002-10-01T00:00:00
Datasets listed in this publication series
- Marino, G; Zahn, R; Ziegler, M et al. (2013): (Table 1) Tuning points used to transfer the MD02-2588 records to the EDC3/EDML1 timescale. https://doi.org/10.1594/PANGAEA.821044
- Marino, G; Zahn, R; Ziegler, M et al. (2013): (Table 2) Tuning points used to transfer the new EDC3/EDML1 chronology of core MD02-2588 to nearby core MD96-2080. https://doi.org/10.1594/PANGAEA.821045