[PDF] Top 20 Dynamic response of Antarctic ice shelves to bedrock uncertainty

... by ice flow from the continent (Rignot et al., 2008, 2013). Ice shelves play an important role in the mass balance of the Antarctic ice sheet through their buttressing effect on the ... See full document

... embayment-wide ice shelf in 1966 to smaller individual remnant ice shelves in 1997 ...an ice tongue in 1997 (Cook and Vaughan 2010), and as such would likely have imposed much lower backstress ... See full document

... of ice-sheet geometry by Pollard and DeConto ...present-day ice-sheet con- figuration while assuming that the present-day configuration is in steady ...in ice streams with a slid- ing multiplier ... See full document

... flowing ice streams transmit information about their bedrock topography most efficiently to the surface for basal undula- tions with length scales between 1 and 20 times the mean ice ...current-day ... See full document

... whole Antarctic ice sheet, a number of studies have simulated the effect of ice shelf melting at the basin ...the response of PIG is mainly driven by the bedrock topography rather than ... See full document

... the dynamic response of glaciers on the Antarctic Peninsula to changed atmospheric and oceanic forcing requires high-resolution ice thickness data as an essential geometric constraint for ... See full document

... of ice-shelf–ice-stream sys- tems are also strongly controlled by grounding-line posi- ...of ice flux across the grounding line on ice thickness there, which is termed the marine ... See full document

... marine ice sheet instability (MISI) for ice sheets where the bedrock dips deeper inland from the grounding line (retrograde bed slopes) so that increased (atmospheric–oceanic) melting leads to re- ... See full document

... thermomechanical ice-sheet model GRISLI-UCM based on the GRISLI model developed by Ritz et ...whole Antarctic domain. Initial topographic condi- tions (ice thickness, surface, and bedrock ... See full document

... Another ice sheet instability mechanism recently suggested by Bassis and Walker [2011] and explored in an ice sheet modeling study by Pollard et ...in bedrock eleva- ...information) ice ... See full document

... floating ice in addition to the freely evolving calv- ing front forcing (Experiment ...respective ice shelf (Paolo et ...is ice-shelf break-up in combination with the calving crite- ria that ... See full document

... sea ice in the Southern Ocean has revealed several ...sea ice extent (Turner et ...sea ice extent (Bitz & Polvani, 2012; Sigmond & Fyfe, ...the Antarctic region (Holland & Kwok, ... See full document

... West Antarctic Ice Sheet (WAIS), a major outlet glacier within the Ellsworth ...Ronne Ice Shelf, where recent mod- els have indicated the potential for significant grounding line zone (GLZ) ... See full document

... high-latitude, Antarctic box is subdivided into smaller grid cells with a resolution of ...underlying bedrock (F s ). In all boxes ice flow veloc- ities and ice height are computed, depending ... See full document

... tic ice shelves, on inter-annual variations in the budget terms, and on the weather conditions associated with high and low net heat flux to the ice ...Larsen ice shelves and WIS are ... See full document

... used Antarctic subsurface ocean temperatures (Beckmann and Goosse 2003) derived from an AOGCM to parameterize the basal mass balance beneath the ice shelves in their ice sheet models (de Boer ... See full document

... the ice or those in brine channels, cells grow despite exposure to extremes of temperature and salinity, while those on the underside of the ice remain at close to freezing ... See full document

... Some recommendations for future studies are as fol- lows: 1) Observational program for Antarctica should be taken on a larger scale. A high accurate meteorological, glaciological and environmental chemistry data are ... See full document

... the Antarctic ice sheet had stabilized by 14 Ma [ 35], implying that the majority of glacial erosion had already occurred by this time [ 64] and that the bedrock topography may have been similar to ... See full document

... Totten ice shelf in eastern Antarctica ...the ice-base mainly over re-grounding ...by ice flow, and widen and grow by melt and stretching until they reach the terminus region where they precondition ... See full document