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Weber, Michael E; Clark, Peter U; Ricken, Werner; Mitrovica, Jerry X; Hostetler, Steven W; Kuhn, Gerhard (2011): Colour reflectance and descriptions of seven sediment cores from the Weddell Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.769686, Supplement to: Weber, ME et al. (2011): Interhemispheric ice-sheet synchronicity during the last glacial maximum. Science, 334(6060), 1265-1269, https://doi.org/10.1126/science.1209299

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Abstract:
The timing of the last maximum extent of the Antarctic ice sheets relative to those in the Northern Hemisphere remains poorly understood. We develop a chronology for the Weddell Sea sector of the East Antarctic Ice Sheet that, combined with ages from other Antarctic ice-sheet sectors, indicates that the advance to and retreat from their maximum extent was within dating uncertainties synchronous with most sectors of Northern Hemisphere ice sheets. Surface climate forcing of Antarctic mass balance would probably cause an opposite response, whereby a warming climate would increase accumulation but not surface melting. Our new data support teleconnections involving sea-level forcing from Northern Hemisphere ice sheets and changes in North Atlantic deep-water formation and attendant heat flux to Antarctic grounding lines to synchronize the hemispheric ice sheets.
Project(s):
Paleoenvironmental Reconstructions from Marine Sediments @ AWI (AWI_Paleo)
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas (SPP1158)
Funding:
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Median Latitude: -73.846810 * Median Longitude: -28.201005 * South-bound Latitude: -74.241160 * West-bound Longitude: -35.511830 * North-bound Latitude: -73.422160 * East-bound Longitude: -26.422660
Date/Time Start: 1987-02-14T09:03:00 * Date/Time End: 1990-01-19T19:49:00
Event(s):
PS1498-2 (PS10/778) * Latitude: -73.490330 * Longitude: -35.511830 * Date/Time: 1987-02-14T09:03:00 * Elevation: -2818.0 m * Penetration: 14.5 m * Recovery: 8.96 m * Location: Weddell Sea * Campaign: ANT-V/4 (PS10) * Basis: Polarstern * Method/Device: Gravity corer (Kiel type) (SL) * Comment: 10 core sections: 0-0.21, 0.21-1.08, 1.08-2.08, 2.08-3.08, 3.08-4.08, 4.08-4.96, 4.96-5.96, 5.96-6.96, 6.96-7.96, 7.96-8.96 m
PS1599-3 (PS12/319) * Latitude: -74.066500 * Longitude: -27.694000 * Date/Time: 1988-01-22T11:09:00 * Elevation: -2487.0 m * Penetration: 13.3 m * Recovery: 11.32 m * Location: Halley Bay * Campaign: ANT-VI/3 (PS12) * Basis: Polarstern * Method/Device: Gravity corer (Kiel type) (SL) * Comment: 12 core sections: 0-0.56, 0.56-1.56, 1.56-2.44, 2.44-3.44, 3.44-4.44, 4.44-5.44, 5.44-6.44, 6.44-7.44, 7.44-8.44, 8.44-9.44, 9.44-10.44, 10.44-11.32 m; 0-156 in PC-Liner extracted from weight barrel
PS1789-1 (PS16/409) * Latitude: -74.241160 * Longitude: -27.300330 * Date/Time: 1990-01-13T11:10:00 * Elevation: -2411.0 m * Penetration: 15 m * Recovery: 14.35 m * Location: Lyddan Island * Campaign: ANT-VIII/5 (PS16) * Basis: Polarstern * Method/Device: Gravity corer (Kiel type) (SL) * Comment: 15 core sections: 0-0.32, 0.32-1.32, 1.32-2.32, 2.32-3.32, 3.32-4.32, 4.32-5.33, 5.33-6.33, 6.33-7.34, 7.34-8.34, 8.34-9.34, 9.34-10.35, 10.35-11.35, 11.35-12.35, 12.35-13.35, 13.35-14.35 m
Comment:
Find the automated tools for layer recognition (BMPix) and counting (PEAK) (Weber et al., 2010) at doi:10.1594/PANGAEA.729700
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
10 datasets

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Datasets listed in this publication series

  1. Weber, ME; Clark, PU; Ricken, W et al. (2011): Documentation of sediment core PS1498-2. https://doi.org/10.1594/PANGAEA.611604
  2. Weber, ME; Clark, PU; Ricken, W et al. (2011): Documentation of sediment core PS1599-3. https://doi.org/10.1594/PANGAEA.108007
  3. Weber, ME; Clark, PU; Ricken, W et al. (2011): Documentation of sediment core PS1789-1. https://doi.org/10.1594/PANGAEA.108094
  4. Weber, ME; Clark, PU; Ricken, W et al. (2011): Documentation of sediment core PS1790-1. https://doi.org/10.1594/PANGAEA.108095
  5. Weber, ME; Clark, PU; Ricken, W et al. (2011): Documentation of sediment core PS1791-2. https://doi.org/10.1594/PANGAEA.499844
  6. Weber, ME; Clark, PU; Ricken, W et al. (2011): Documentation of sediment core PS1793-2. https://doi.org/10.1594/PANGAEA.611605
  7. Weber, ME; Clark, PU; Ricken, W et al. (2011): Documentation of sediment core PS1798-1. https://doi.org/10.1594/PANGAEA.611606
  8. Weber, ME; Clark, PU; Ricken, W et al. (2011): Color measurements on sediment core PS1789-1. https://doi.org/10.1594/PANGAEA.769684
  9. Weber, ME; Clark, PU; Ricken, W et al. (2011): Color measurements on sediment core PS1791-2. https://doi.org/10.1594/PANGAEA.769685
  10. Weber, ME; Clark, PU; Ricken, W et al. (2011): (Table S2) Age determination of seven sediment cores. https://doi.org/10.1594/PANGAEA.772128