Documentation for PISM, the Parallel Ice Sheet Model


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applications:201611 [2016/11/08 00:56] (current)
Ed Bueler created by copy of future_applications:201611
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 +====== November 2016 ======
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 +| **[[http://​​10.1038/​nature17447|Repeated large-scale retreat and advance of Totten Glacier indicated by inland bed erosion]]** ||
 +| **investigators**:​ | [[https://​​profile/​Alan_Aitken|A. Aitken]] and others|
 +| **journal**:​ | [[http://​​nature|Nature]] |
 +The East Antarctic Ice Sheet (EAIS) has been more stable than the other major ice sheets for at least a million years. ​ However, for older warm periods there is evidence suggesting ​ collapse of the Totten Glacier, one of several large, ocean-forced outlets of the EAIS, with retreat into interior basins. ​ This paper shows that deep ice-sheet erosion has occurred in two regions, one at the present-day head of the Glacier and the other deep within the subglacial basin behind it. Aerogeophysical data suggest two distinct configurations,​ a "​modern"​ ice sheet with a near-present-day ​ margin, and a retreated configuration. ​ The transitional region between these is less eroded, suggesting shorter-lived exposure to repeated retreat–advance events. ​
 +What is a role for PISM is such work?  In this case, ice-sheet modelling indicates that the sector'​s retreat-driven global sea-level increase could 0.9 meters in modern-like configurations,​ with a jump up to 2 meters or more if there is a transition to the retreated configuration.
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applications/201611.txt · Last modified: 2016/11/08 00:56 by Ed Bueler
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