project . 2013 - 2018 . Closed

Dating and modelling fast ice-sheet grounding-line retreat over the last 4000 years in the SW Weddell Sea, Antarctica

UK Research and Innovation
  • Funder: UK Research and InnovationProject code: NE/J008087/1
  • Funded under: NERC Funder Contribution: 336,680 GBP
  • Status: Closed
  • Start Date
    29 Jun 2013
    End Date
    30 Aug 2018
Description
The threat the West Antarctic ice-sheet poses to sea-level is largely through retreat of the grounding line, the line that separates floating ice, whose effects on sea-level are negligible, and grounded ice, which can affect sea-level. A concern is that theoretical models suggest grounding-line retreat may be unstable. Geological evidence for the grounding line retreat under the Antarctic ice shelves, where the most substantial retreat took place, is scarce owing to poor accessibility. We will use a new technique that dates ice-flow changes from stratigraphic anomalies in the small ice-rises lying within the Ronne ice shelf. This will provide information about r...
Description
The threat the West Antarctic ice-sheet poses to sea-level is largely through retreat of the grounding line, the line that separates floating ice, whose effects on sea-level are negligible, and grounded ice, which can affect sea-level. A concern is that theoretical models suggest grounding-line retreat may be unstable. Geological evidence for the grounding line retreat under the Antarctic ice shelves, where the most substantial retreat took place, is scarce owing to poor accessibility. We will use a new technique that dates ice-flow changes from stratigraphic anomalies in the small ice-rises lying within the Ronne ice shelf. This will provide information about r...
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