Blar i forfatter "Smith, James A."

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    • History of the Larsen C Ice Shelf reconstructed from sub–ice shelf and offshore sediments 

      Smith, James A.; Hillenbrand, Claus-Dieter; Subt, C.; Rosenheim, B.E.; Frederichs, Thomas; Ehrmann, Werner; Andersen, Thorbjørn Joest; Wacker, Lukas; Makinson, K.; Anker, P.; Venables, Emily Joanne; Nicholls, Keith W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-28)
      Because ice shelves respond to climatic forcing over a range of time scales, from years to millennia, an understanding of their long-term history is critically needed for predicting their future evolution. We present the first detailed reconstruction of the Larsen C Ice Shelf (LCIS), eastern Antarctic Peninsula (AP), based on data from sediment cores recovered from below and in front of the ice ...

    • Insights into glacial processes from micromorphology of silt-sized sediment 

      Lepp, Allison P.; Miller, Lauren E.; Anderson, John B.; O’Regan, Matt; Winsborrow, Monica Caroline Mackay; Smith, James A.; Hillenbrand, Claus-Dieter; Wellner, Julia S.; Prothro, Lindsay O.; Podolskiy, Evgeny A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-07)
      Silt-rich meltwater plume deposits (MPDs) analyzed from marine sediment cores have elucidated relationships that are clearly connected, yet difficult to constrain, between subglacial hydrology, ice-marginal landforms, and grounding-zone retreat patterns for several glacial catchments. Few attempts have been made to infer details of subglacial hydrology, such as flow regime, geometry of drainage ...

    • Past ice sheet-seabed interactions in the northeastern Weddell Sea embayment, Antarctica 

      Arndt, Jan Erik; Larter, Robert D.; Hillenbrand, Claus-Dieter; Sørli, Simon H.; Forwick, Matthias; Smith, James A.; Wacker, Lukas (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-30)
      The Antarctic ice sheet extent in the Weddell Sea embayment (WSE) during the Last Glacial Maximum (LGM; ca. 19–25 calibrated kiloyears before present, ka cal BP) and its subsequent retreat from the shelf are poorly constrained, with two conflicting scenarios being discussed. Today, the modern Brunt Ice Shelf, the last remaining ice shelf in the northeastern WSE, is only pinned at a single location ...