Larsen Ice Shelf Has Progressively Thinned

  title={Larsen Ice Shelf Has Progressively Thinned},
  author={Andrew Shepherd and Duncan J. Wingham and Tony Payne and Pedro Skvarca},
  pages={856 - 859}
The retreat and collapse of Antarctic Peninsula ice shelves in tandem with a regional atmospheric warming has fueled speculation as to how these events may be related. Satellite radar altimeter measurements show that between 1992 and 2001 the Larsen Ice Shelf lowered by up to 0.27 ± 0.11 meters per year. The lowering is explained by increased summer melt-water and the loss of basal ice through melting. Enhanced ocean-driven melting may provide a simple link between regional climate warming and… 
Strong surface melting preceded collapse of Antarctic Peninsula ice shelf
[1] During the austral summer of 2001/02, melting at the surface of Larsen Ice Shelf in the Antarctic Peninsula was three times greater than the average of five previous summers. This exceptional
Strong surface melting preceded collapse of Antarctic Peninsula ice shelf
During the austral summer of 2001/02, melting at the surface of Larsen Ice Shelf in the Antarctic Peninsula was three times greater than the average of five previous summers. This exceptional melt
Marine ice in Larsen Ice Shelf
It is argued that Larsen Ice Shelf contains marine ice formed by oceanic freezing and other mechanisms. Missing basal returns in airborne radar soundings and observations of a smooth and healed
Early Holocene retreat of the George VI Ice Shelf, Antarctic Peninsula
The recent collapse of several Antarctic Peninsula ice shelves has been linked to rapid regional atmospheric warming during the twentieth century. New high-resolution lake sediment records of
Trends and connections across the Antarctic cryosphere
This paper discusses how Antarctic ice has changed over recent decades, and how these changes have been recorded in satellite observations.
Channelized Melting Drives Thinning Under a Rapidly Melting Antarctic Ice Shelf
Ice shelves play a vital role in regulating loss of grounded ice and in supplying freshwater to coastal seas. However, melt variability within ice shelves is poorly constrained and may be
Recent dramatic thinning of largest West Antarctic ice stream triggered by oceans
A growing body of observational data suggests that Pine Island Glacier (PIG) is changing on decadal or shorter timescales. These changes may have far‐reaching consequences for the future of the West
Stability of the Larsen B ice shelf on the Antarctic Peninsula during the Holocene epoch
It is suggested that the recent prolonged period of warming in the Antarctic Peninsula region, in combination with the long-term thinning of the Larsen B ice shelf has led to collapse of the ice shelf.
Oceanic and atmospheric forcing of Larsen C Ice-Shelf thinning
Abstract. The catastrophic collapses of Larsen A and B ice shelves on the eastern Antarctic Peninsula have caused their tributary glaciers to accelerate, contributing to sea-level rise and freshening


Rapid Collapse of Northern Larsen Ice Shelf, Antarctica
In January 1995, 4200 square kilometers of the northern Larsen Ice Shelf, Antarctic Peninsula, broke away. Radar images from the ERS-1 satellite, complemented by field observations, showed that the
Rapid Bottom Melting Widespread near Antarctic Ice Sheet Grounding Lines
Results obtained with satellite radar interferometry reveal that bottom melt rates experienced by large outlet glaciers near their grounding lines are far higher than generally assumed.
Melting and freezing beneath Filchner‐Ronne Ice Shelf, Antarctica
We use remote‐sensing data sets to evaluate the spatial distribution of melt beneath the Filchner‐Ronne Ice Shelf (FRIS). The net melt rate of 83.4 ± 24.8 Gtons/yr is 2.5–5 times lower than previous
Inland thinning of Pine Island Glacier, West Antarctica.
Satellite altimetry and interferometry show that the grounded PIG thinned by up to 1.6 meters per year between 1992 and 1999, affecting 150 kilometers of the inland glacier, which cannot be explained by short-term variability in accumulation and must result from glacier dynamics.
Breakup and conditions for stability of the northern Larsen Ice Shelf, Antarctica
The breakup of ice shelves has been widely regarded as an indicator of climate change, with observations around the Antarctic Peninsula having shown a pattern of gradual retreat, associated with
Recent atmospheric warming and retreat of ice shelves on the Antarctic Peninsula
IN 1978 Mercer1 discussed the probable effects of climate warming on the Antarctic Ice Sheet, predicting that one sign of a warming trend in this region would be the retreat of ice shelves on the
Ice shelf tidal motion derived from ERS altimetry
[1] Ocean tides beneath floating ice shelves can affect heat and water circulations within the subshelf cavity, which may influence patterns of basal melting. Accurate tidal predictions are essential
The link between climate warming and break-up of ice shelves in the Antarctic Peninsula
Abstract A review of in situ and remote-sensing data covering the ice shelves of the Antarctic Peninsula provides a series of characteristics closely associated with rapid shelf retreat: deeply
Antarctic elevation change from 1992 to 1996
Satellite radar altimeter measurements show that the average elevation of the Antarctic Ice Sheet interior fell by 0.9 +/- 0.5 centimeters per year from 1992 to 1996. If the variability of snowfall
The Physics of Glaciers
The transformation of snow to ice mass balance heat budget and climatology structure and deformation of ice hydraulics and glaciers glacier sliding deformation of subglacial till structures and