Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Hillenbrand, Claus-Dieter; Kuhn, Gerhard; Smith, James A; Gohl, Karsten; Graham, Alastair G C; Larter, Robert D; Klages, Johann Philipp; Downey, Rachel; Moreton, Steven Grahame; Forwick, Matthias; Vaughan, David G (2013): Sedimentological and geophysical investigation of sediment cores from the Amundsen Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.751493, Supplement to: Hillenbrand, C-D et al. (2013): Grounding-line retreat of the West Antarctic Ice Sheet from inner Pine Island Bay. Geology, 41(1), 35-38, https://doi.org/10.1130/G33469.1

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Ice loss from the marine-based, potentially unstable West Antarctic Ice Sheet (WAIS) contributes to current sea-level rise and may raise sea level by up to 3.3 to 5 meters in the future. Over the past few decades, glaciers draining the WAIS into the Amundsen Sea Embayment (ASE) have shown accelerated ice flow, rapid thinning and grounding-line retreat. However, the long-term context of this ice-sheet retreat is poorly constrained, limiting our ability to accurately predict future WAIS behaviour. Here we present a new chronology for WAIS retreat from the inner continental shelf of the eastern ASE based on radiocarbon dates from three marine sediment cores. The ages document a retreat of the grounding line to within ~93 km of its modern position before 11.7±0.7 kyr BP (thousand years before present). This early deglaciation is consistent with ages for grounding-line retreat from the western ASE. Our new data demonstrate that, other than in the Ross Sea, WAIS retreat in the ASE has not continued progressively since the Last Glacial Maximum. Furthermore, our results suggest that the grounding-line position in the ASE was predominantly stable throughout the Holocene, and that any episodes of fast retreat similar to that observed today must have been short-lived. Alternatively, today's rapid retreat was unprecedented during the Holocene. Therefore, the current ice loss must originate in recent changes in regional climate, ocean circulation or ice-sheet dynamics. Incorporation of these results into models is essential to produce robust predictions of future ice-sheet change and its contribution to sea-level rise.
Project(s):
Paleoenvironmental Reconstructions from Marine Sediments @ AWI (AWI_Paleo)
Coverage:
Median Latitude: -74.521117 * Median Longitude: -110.304697 * South-bound Latitude: -74.622830 * West-bound Longitude: -134.120830 * North-bound Latitude: -71.468300 * East-bound Longitude: -102.621330
Date/Time Start: 2006-01-31T17:05:00 * Date/Time End: 2010-03-20T08:42:00
Event(s):
JR141_BC448 (BC448) * Latitude: -71.468300 * Longitude: -108.358900 * Date/Time: 2006-02-08T23:59:00 * Elevation: -488.0 m * Recovery: 0.12 m * Location: Amundsen Sea * Campaign: JR20060109 (JR141 JR150) * Basis: James Clark Ross * Method/Device: Box corer (BC)
JR141_BC451 (BC451) * Latitude: -71.865600 * Longitude: -106.040800 * Date/Time: 2006-02-09T15:58:00 * Elevation: -568.0 m * Recovery: 0.24 m * Location: Amundsen Sea * Campaign: JR20060109 (JR141 JR150) * Basis: James Clark Ross * Method/Device: Box corer (BC)
JR141_VC419 (VC419) * Latitude: -74.136100 * Longitude: -112.451370 * Date/Time: 2006-01-31T17:05:00 * Elevation: -806.0 m * Recovery: 4.8 m * Location: Amundsen Sea * Campaign: JR20060109 (JR141 JR150) * Basis: James Clark Ross * Method/Device: Vibro corer (VC)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
20 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Documentation of sediment core PS75/129-1. https://doi.org/10.1594/PANGAEA.743437
  2. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Documentation of sediment core PS75/160-1. https://doi.org/10.1594/PANGAEA.743436
  3. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Documentation of sediment core PS75/167-1. https://doi.org/10.1594/PANGAEA.754973
  4. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Documentation of sediment core PS75/214-1. https://doi.org/10.1594/PANGAEA.754980
  5. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): (Table DR1) Age determination of sediment cores from the Amundsen Sea. https://doi.org/10.1594/PANGAEA.773979
  6. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Physical properties of sediment core PS75/129-1. https://doi.org/10.1594/PANGAEA.751452
  7. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Shear strength of sediment core PS75/129-1. https://doi.org/10.1594/PANGAEA.773955
  8. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Water content of sediment core PS75/160-1. https://doi.org/10.1594/PANGAEA.751478
  9. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Grain-size composition of sediment core PS75/160-1. https://doi.org/10.1594/PANGAEA.773959
  10. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Physical properties of sediment core PS75/160-1. https://doi.org/10.1594/PANGAEA.751453
  11. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Shear strength of sediment core PS75/160-1. https://doi.org/10.1594/PANGAEA.773956
  12. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Water content of sediment core PS75/129-1. https://doi.org/10.1594/PANGAEA.751479
  13. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Grain-size composition of sediment core PS75/167-1. https://doi.org/10.1594/PANGAEA.773960
  14. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Physical properties of sediment core PS75/167-1. https://doi.org/10.1594/PANGAEA.751444
  15. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Shear strength of sediment core PS75/167-1. https://doi.org/10.1594/PANGAEA.773957
  16. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Water content of sediment core PS75/167-1. https://doi.org/10.1594/PANGAEA.751445
  17. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Grain-size composition of sediment core PS75/214-1. https://doi.org/10.1594/PANGAEA.773961
  18. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Shear strength of sediment core PS75/214-1. https://doi.org/10.1594/PANGAEA.773958
  19. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Physical properties of sediment core PS75/214-1. https://doi.org/10.1594/PANGAEA.773954
  20. Hillenbrand, C-D; Kuhn, G; Smith, JA et al. (2013): Water content of sediment core PS75/215-1. https://doi.org/10.1594/PANGAEA.773972