Deep glacial troughs and stabilizing ridges unveiled beneath the margins of the Antarctic ice sheet

Morlighem, Mathieu; Rignot, Eric; Binder, Tobias; Blankenship, Donald D; Drews, Reinhard; Eagles, Graeme; Eisen, Olaf; Ferraccioli, Fausto; Forsberg, René; Fretwell, Peter T.; Goel, Vikram; Greenbaum, Jamin S.; Gudmundsson, Hilmar; Guo, Jingxue; Helm, Veit; Hofstede, Coen; Howat, Ian M; Humbert, Angelika; Jokat, Wilfried; Karlsson, Nanna B.; Lee, Won Sang; Matsuoka, Kenichi; Millan, Romain; Mouginot, Jérémie; Paden, John D; Pattyn, Frank; Roberts, Jason B.; Rosier, Sebastian H. R.; Ruppel, Antonia; Seroussi, Helene; Smith, Emma C.; Steinhage, Daniel; Sun, Bo Chao; Broeke, Michiel R. van den; Ommen, Tas D. Van; Wessem, Melchior van; Young, Duncan A

doi:10.1038/s41561-019-0510-8

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Deep glacial troughs and stabilizing ridges unveiled beneath the margins of the Antarctic ice sheet

Author(s): Mathieu Morlighem , Eric Rignot , Tobias Binder , Donald Blankenship , Reinhard Drews , Graeme Eagles , Olaf Eisen , Fausto Ferraccioli , René Forsberg , Peter Fretwell , Vikram Goel , Jamin S. Greenbaum , Hilmar Gudmundsson , Jingxue Guo , Veit Helm , Coen Hofstede , Ian Howat , Angelika Humbert , Wilfried Jokat , Nanna B. Karlsson , Won Sang Lee , Kenichi Matsuoka , Romain Millan , Jeremie Mouginot , John Paden , Frank Pattyn , Jason Roberts , Sebastian Rosier , Antonia Ruppel , Helene Seroussi , Emma C. Smith , Daniel Steinhage , Bo Sun , Michiel R. van den Broeke , Tas D. van Ommen , Melchior van Wessem , Duncan A. Young

Publication date (Electronic): December 12 2019

Journal: Nature Geoscience

Publisher: Springer Science and Business Media LLC

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Bedmap2: improved ice bed, surface and thickness datasets for Antarctica

P Fretwell, H. D. Pritchard, D. G. Vaughan … (2013)

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Marine ice sheet collapse potentially under way for the Thwaites Glacier Basin, West Antarctica.

Ian Joughin, Benjamin E Smith, Brooke Medley (2014)

Resting atop a deep marine basin, the West Antarctic Ice Sheet has long been considered prone to instability. Using a numerical model, we investigated the sensitivity of Thwaites Glacier to ocean melt and whether its unstable retreat is already under way. Our model reproduces observed losses when forced with ocean melt comparable to estimates. Simulated losses are moderate ( 1 mm per year of sea-level rise) collapse in the different simulations within the range of 200 to 900 years. Copyright © 2014, American Association for the Advancement of Science.