[PDF] Top 20 Parameterising the grounding line in flow-line ice sheet models
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Parameterising the grounding line in flow-line ice sheet models
... an ice sheet model with two horizontal dimensions, use of H2 GB2 instead of LI B1 would represent a significant (at least factor 8) saving in computational ...the grounding line problem inher- ... See full document
15
Simulated dynamic regrounding during marine ice sheet retreat
... Many ice sheet models use a power-law relationship be- tween the basal shear stress and sliding velocity, such as that of Weertman ...These models require very fine mesh resolution due to the ... See full document
12
Sea-level response to melting of Antarctic ice shelves on multi-centennial timescales with the fast Elementary Thermomechanical Ice Sheet model (f.ETISh v1.0)
... 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 ... See full document
28
Future sea level change from Antarctica's Lambert Amery glacial system
... PISM ice sheet model does not include the hydrofracture and ice cliff failure mechanisms [Pollard et ...the flow of the ice shelf to generate and sustain crevasses [Pollard et ...the ... See full document
9
Ice stream grounding-line stability on a reverse bed slope
... Many ice streams possess beds that are below sea level and typically deepen inland on a reverse-slope 9 ...that ice discharge increases rapidly with water depth 3 , and in the absence of lateral-drag ... See full document
25
Neutral equilibrium and forcing feedbacks in marine ice sheet modelling
... ing grounding line movement (sometimes referred to as grounding line migration) in a marine ice sheet model was identified by Vieli and Payne (2005) and was further charac- ... See full document
11
Ice-shelf buttressing and the stability of marine ice sheets
... of grounding-line motion have demonstrated the need for high spatial resolution, on the order of one ice thickness, in the vicinity of the ground- ing line (Pattyn et ...large-scale ice ... See full document
9
Stopping the flood: could we use targeted geoengineering to mitigate sea level rise?
... climate models for the Amund- sen Sea sector of West Antarctica under medium- to high- end emissions scenarios (Bracegirdle et ...climate models running high-end emissions scenarios (Bracegirdle et ...the ... See full document
13
Sensitivity of the dynamics of Pine Island Glacier, West Antarctica, to climate forcing for the next 50 years
... in ice shelf cavity will af- fect their amplitude and spatial distribution (Schodlok et ...in ice shelf cavity will impact oceanic circulation and basal melting rates, and our results are therefore likely ... See full document
12
Numerical simulations of a kilometre-thick Arctic ice shelf consistent with ice grounding observations
... of ice grounding. With the exception of the partial ice shelf ...the ice sheet configurations tested can pro- duce an ice shelf of sufficient thickness to ground on the central ... See full document
10
An ice flow modeling perspective on bedrock adjustment patterns of the Greenland ice sheet
... 3-D ice sheet–bedrock model: the ice dynam- ics, the surface mass balance and the solid earth ...in ice thickness and the bedrock ...Little Ice Age (LIA), a series of ex- periments were ... See full document
12
Actively evolving subglacial conduits and eskers initiate ice shelf channels at an Antarctic grounding line
... of ice-shelf channel formation is now improved and more complicated than previously ...first, ice-shelf channels can develop through meltwater plume flow combined with transverse variability in ... See full document
10
Hydrostatic grounding line parameterization in ice sheet models
... the grounding line is impor- tant to accurately capture shear margins (Raymond, 1996) or topography that varies over short distances, but should not be uniform and be based, for example, on the Hessian of ... See full document
13
Representation of basal melting at the grounding line in ice flow models
... of grounding lines and basal fric- tion in the grounding zone, little has been done about the impact of the numerical treatment of ocean-induced basal melting in this ...the ice sheet modeling ... See full document
12
Grounding line transient response in marine ice sheet models
... Marine ice-sheet stability is mostly controlled by the dynamics of the grounding line, ...grounded ice sheet and the floating ice shelf. Grounding line ... See full document
12
The Short-Timescale Behavior of Glacial Ice
... quantify ice melting rates and predictions of the lifespans of dwindling glaciers, many aspects of the fundamental physics underlying the deformation of glaciers are poorly ...and ice streams in the ... See full document
362
Mapping Ice Sheet Grounding Lines With CryoSat-2
... heterogeneous ice sheet margins, making it particularly well suited for mapping slope in areas of steeply sloping terrain relative to conven- tional pulse limited altimeter missions (Wingham et ...the ... See full document
12
Semi-brittle rheology and ice dynamics in DynEarthSol3D
... of ice within many ice sheet models is often treated using linear elastic fracture mechan- ics ...2015). Ice rheology has been studied using both geophysical observations and laboratory ... See full document
16
Deglaciation and future stability of the Coats Land ice margin, Antarctica
... Antarctic Ice Sheet discharges into the Weddell Sea via the Coats Land ice ...changing ice-sheet con- figuration in this region through its last glacial advance and Holocene retreat and ... See full document
17
Actively evolving subglacial conduits and eskers initiate ice shelf channels at an Antarctic grounding line
... the grounding line results in the steady-state conduit area in ...the grounding line which can be conceptually understood as follows: If ice floats, the effective pressure is zero and ... See full document
10
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