Article révisé par les pairs
Résumé : Abstract Understanding the coastal zone of the Antarctic Ice Sheet (AIS), where it interacts with the Southern Ocean and warmer air masses, is crucial for predicting Antarctica's influence on the global climate and sea level. This region has multiple tipping mechanisms that could trigger large, rapid, and potentially irreversible changes in the AIS, the Southern Ocean and their global connections in the coming centuries. The AIS remains the largest source of uncertainty in future sea‐level projections. Bed topography beneath the ice shelves and the coastal ice sheet is not yet well documented, and is a major source of this uncertainty. This review assesses current knowledge of the coastal zone and highlights methods to investigate it, including aerogeophysical surveys, ground‐ and ship‐based measurements, satellite observations, and computer modeling. An ensemble analysis of published bed topography data sets identifies significant data gaps and their regional distribution, framed in the context of current ice‐sheet behavior and potential instability. We propose scientific priorities and guidelines for future aerogeophysical surveys, advocating for a comprehensive, coordinated international effort to build a next‐generation data set of Antarctic bed properties. Such an initiative would significantly advance understanding of the role of coastal processes in ice‐sheet dynamics, reducing uncertainties in sea‐level rise projections and improving predictions of future ocean and climate changes.

Documents en relation

DI-fusion

  • Bedmap3 updated ice bed, surface and thickness gridded datasets for Antarctica
    par Pritchard, Hamish D. , Fretwell, Peter T. , Fremand, Alice C. , Bodart, Julien A. , Kirkham, James , Aitken, Alan , Bamber, Jonathan L. , Bell, Robin Jean , Bianchi, Cesidio , Bingham, Robert G. , Blankenship, Donald , Casassa, Gino , Christianson, Knut , Conway, Howard , Corr, Hugh F. J. , Cui, Xiangbin , Damaske, Detlef , Damm, Volkmar , Dorschel, Boris , Drews, Reinhard , Eagles, Graeme , Eisen, Olaf , Eisermann, Hannes , Ferraccioli, Fausto , Field, Elena , Forsberg, René , Franke, Steven , Goel, Vikram , Gogineni, Siva Prasad , Greenbaum, Jamin Stevens , Hills, Benjamin , Hindmarsh, Richard C. A. , Hoffman, Andrew O. , Holschuh, Nicholas , Holt, John W. , Humbert, Angelika , Jacobel, Robert W. , Jansen, Daniela , Jenkins, Adrian , Jokat, Wilfried , Jong, Lenneke , Jordan, Tom A. , King, Edward C. , Kohler, Jack , Krabill, William , Maton, Joséphine , Gillespie, Mette Kusk , Langley, Kirsty , Lee, Joohan , Leitchenkov, German , Leuschen, Cartlon , Luyendyk, Bruce , MacGregor, Joseph A. , MacKie, Emma , Moholdt, Geir , Matsuoka, Kenichi , Morlighem, Mathieu , Mouginot, Jeremie , Nitsche, Frank O. , Nost, Ole A. , Paden, John , Pattyn, Frank , Popov, Sergey , Rignot, Eric , Rippin, David M. , Rivera, Andrés , Roberts, Jason L. , Ross, Neil , Ruppel, Antonia , Schroeder, Dustin M. , Siegert, Martin J. , Smith, Andrew M. , Steinhage, Daniel , Studinger, Michael , Sun, Bo , Tabacco, Ignazio , Tinto, Kirsty J. , Urbini, Stefano , Vaughan, David G. , Wilson, Douglas S. , Young, Duncan D.A. , Zirizzotti, Achille
    Publication 2025-03-10
  • Emergent decadal predictability in Antarctic contribution to sea-level rise
    par McCormack, Felicity , Morlighem, Mathieu , Pattyn, Frank , Robel, Alexander A. , Seroussi, Helene
    Publication 2026-06
  • Enhanced basal melting in winter and spring: seasonal ice--ocean interactions at the Ekstr"om Ice Shelf, East Antarctica
    par Zeising, Ole , Hattermann, Tore , Kaleschke, L. , Boebel, O. , Drews, Reinhard , Ershadi, M. , Fromm, T. , Pattyn, Frank , Steinhage, Daniel , Eisen, Olaf
    Publication 2025-08-01
  • Influence of geothermal heat flow uncertainty on model predictions of Antarctic subglacial conditions
    par Raspoet, Olivia , Pattyn, Frank
    Publication 2026-08-14
  • Antarctic Bedmap data: Findable, Accessible, Interoperable, and Reusable (FAIR) sharing of 60 years of ice bed, surface, and thickness data
    par Frémand, Alice , Fretwell, Peter , Bodart, Julien A. , Pritchard, Hamish D. , Aitken, Alan , Bamber, Jonathan L. , Bell, Robin Jean , Bianchi, Cesidio , Bingham, Robert G. , Blankenship, Donald , Casassa, Gino , Catania, Ginny , Christianson, Knut , Conway, Howard , Corr, Hugh F. J. , Cui, Xiangbin , Damaske, Detlef , Damm, Volkmar , Drews, Reinhard , Eagles, Graeme , Eisen, Olaf , Eisermann, Hannes , Ferraccioli, Fausto , Field, Elena , Forsberg, René , Franke, Steven , Fujita, Shuji , Gim, Yonggyu , Goel, Vikram , Gogineni, Siva Prasad , Greenbaum, Jamin Stevens , Hills, Benjamin , Hindmarsh, Richard C. A. , Hoffman, Andrew O. , Holmlund, Per , Holschuh, Nicholas , Holt, John W. , Horlings, Annika , Humbert, Angelika , Jacobel, Robert , Jansen, Daniela , Jenkins, Adrian , Jokat, Wilfried , Jordan, Tom , King, Edward , Kohler, Jack , Krabill, William , Kusk Gillespie, Mette , Langley, Kirsty , Lee, Joohan , Leitchenkov, German , Leuschen, Carlton , Luyendyk, Bruce , MacGregor, Joseph A. , MacKie, Emma , Matsuoka, Kenichi , Morlighem, Mathieu , Mouginot, Jeremie , Nitsche, Frank , Nogi, Yoshifumi , Nost, Ole , Paden, John , Pattyn, Frank , Popov, Sergey V. , Rignot, Eric , Rippin, David , Medina-Rivera, Alejandra , Roberts, Jason , Ross, Neil , Ruppel, Anotonia , Schroeder, Dustin M. , Siegert, Martin J. , Smith, Andrew M. , Steinhage, Daniel , Studinger, Michael , Sun, Bo , Tabacco, Ignazio , Tinto, Kirsty , Urbini, Stefano , Vaughan, David , Welch, Brian , Wilson, Douglas S. , Young, Duncan D.A. , Zirizzotti, Achille
    Publication 2023-07-01