Reassessment of the Potential Sea-Level Rise from a Collapse of the West Antarctic Ice Sheet

  title={Reassessment of the Potential Sea-Level Rise from a Collapse of the West Antarctic Ice Sheet},
  author={Jonathan L. Bamber and Riccardo E. M. Riva and Bert L. A. Vermeersen and Anne LeBrocq},
  pages={901 - 903}
Collapse and Rise The West Antarctic Ice Sheet (WAIS) is thought to be inherently unstable and susceptible to rapid collapse if it reaches a certain warming threshold. Although such an event is considered unlikely, to predict the consequences of collapse it is important to know how much sea level would rise in such a case. The WAIS is thought to contain enough ice to raise sea level by 5 to 7 meters were it to collapse. Bamber et al. (p. 901, see the cover; see the Perspective by Ivins) have… 
An Overlooked Term in Assessment of the Potential Sea-Level Rise from a Collapse of the West Antarctic Ice Sheet
As to sea level rise (SLR) contribution, melting and setting afloat make no difference for land based ice. Melting of West Antarctic Ice Sheet (WAIS) into water is impossible in the upcoming
Briefing: Antarctic ice sheet mass loss and future sea-level rise
Sea-level rise, one of the most obvious consequences of climate change, has direct impacts on coastal communities and economic infrastructure. It is important to assess current sea-level rise and
Stabilizing the West Antarctic Ice Sheet by surface mass deposition
It is shown that the WAIS may be stabilized through mass deposition in coastal regions around Pine Island and Thwaites glaciers if applied over a short period of 10 years onto the region (−2 mm year−1 sea level equivalent).
Rapid postglacial rebound amplifies global sea level rise following West Antarctic Ice Sheet collapse
This work demonstrates that the outflux mechanism contributes ~1 meter of additional GMSL change within ~1 thousand years of the collapse of the West Antarctic Ice Sheet, and shows that this contribution to global mean sea level (GMSL) rise is small and occurs slowly.
Oceanic Forcing of Ice-Sheet Retreat: West Antarctica and More
Ocean-ice interactions have exerted primary control on the Antarctic Ice Sheet and parts of the Greenland Ice Sheet, and will continue to do so in the near future, especially through melting of ice
Ice-sheet collapse and sea-level rise at the Bølling warming 14,600 years ago
The results, based on corals drilled offshore from Tahiti during Integrated Ocean Drilling Project Expedition 310, reveal that the increase in sea level at Tahiti was between 12 and 22 metres, with a most probable value between 14 and 18 metres, establishing a significant meltwater contribution from the Southern Hemisphere.
Evidence for the stability of the West Antarctic Ice Sheet divide for 1.4 million years
Geomorphological evidence and multiple cosmogenic nuclide data from the southern Ellsworth Mountains are presented to suggest that the divide of the West Antarctic Ice Sheet has fluctuated only modestly in location and thickness for at least the last 1.4 million years.
Ocean temperature thresholds for Last Interglacial West Antarctic Ice Sheet collapse
The West Antarctic Ice Sheet (WAIS) is considered the major contributor to global sea level rise in the Last Interglacial (LIG) and potentially in the future. Exposed fossil reef terraces suggest sea
Testing the sensitivity of the East Antarctic Ice Sheet to Southern Ocean dynamics: past changes and future implications
The stability of Antarctic ice sheets and their potential contribution to sea level under projected future warming remains highly uncertain. The Last Interglacial (135 000–116 000 years ago) provides


The Sea-Level Fingerprint of West Antarctic Collapse
It is shown, with use of a state-of-the-art theory, that the sea-level rise in excess of the eustatic value will be two to three times higher than previously predicted for U.S. coastal sites.
Effect of climatic warming on the West Antarctic ice sheet
Climatic warming could cause increased melting from Antarctic ice shelves. Continued weakening of the ice shelves in this way would result in the ultimate collapse of most of the West Antarctic ice
Adaptation to Five Metres of Sea Level Rise
There is an unknown but probably small probability that the West‐Antarctic Ice Sheet (WAIS) will collapse because of anthropogenic climate change. A WAIS collapse could cause a 5–6 metre global sea
On Postglacial Sea Level
Summary An exact method is presented for calculating the changes in sea level that occur when ice and water masses are rearranged on the surface of elastic and viscoelastic non-rotating Earth models.
New boundary conditions for the West Antarctic ice sheet: Subglacial topography beneath Pine Island Glacier
Predictions about future changes in the Amundsen Sea sector of the West Antarctic ice sheet (WAIS) have been hampered by poorly known subglacial topography. Extensive airborne survey has allowed us
Stability of the Junction of an Ice Sheet and an Ice Shelf
  • J. Weertman
  • Environmental Science
    Journal of Glaciology
  • 1974
An analysis is made of the steady-state size of a two-dimensional ice sheet whose base is below sea-level and which terminates in floating ice shelves. Under the assumption of perfect plasticity it
Is the west Antarctic Ice Sheet disintegrating
Data pertaining to the dynamics and history of the west antarctic ice cover are reviewed and interpreted in terms of a possible inherent instability of the ice cover. A study of published data
New boundary conditions for the West Antarctic Ice Sheet: Subglacial topography of the Thwaites and Smith glacier catchments
Airborne radar sounding over the Thwaites Glacier (TG) catchment and its surroundings provides the first comprehensive view of subglacial topography in this dynamic part of the West Antarctic Ice
On post-glacial sea level: I. General theory
SUMMARY Modern analyses of sea level changes due to glacial isostatic adjustment (GIA) are based on the classic sea level equation derived by Farrell & Clark (1976, Geophys. J.R. astr. Soc., 46,
BEDMAP: a new ice thickness and subglacial topographic model of Antarctica
Measurements of ice thickness on the Antarctic ice sheet collected during surveys undertaken over the past 50 years have been brought together into a single database. From these data, a seamless