Subglacial drainage
Channelized, distributed, and disconnected: subglacial drainage under a valley glacier in the Yukon
... the subglacial drainage sys- tem during the melt season, but that those regions can evolve in time, and that disconnection from or reconnection to the drainage system can be quite ...the ...
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Response of the large-scale subglacial drainage system of Northeast Greenland to surface elevation changes
... large-scale subglacial drainage pattern of Northeast ...of subglacial water may fluctuate for several thousand years even after external forcings have ...the subglacial water from multiple ...
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Ice sheet scale comparison of modelled subglacial drainage pathways with mapped esker networks
... meltwater drainage during deglaciation providing vital information on the nature and evolution of subglacial ...with subglacial drainage routes diagnosed at discrete time intervals from the ...
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Increased channelization of subglacial drainage during deglaciation of the Laurentide Ice Sheet
... the drainage system, which responds by gen- erating large channels that effi ciently evacuate excess surface meltwater (Bartholomew et ...in subglacial drain- age introduce uncertainty when attempting to ...
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Short-term variability in Greenland Ice Sheet motion forced by time-varying meltwater drainage: Implications for the relationship between subglacial drainage system behavior and ice velocity
... the subglacial drainage system for a short time (Figures 2 and ...indicates drainage of large volumes of stored water from the ice sheet surface, which was delivered to the ice sheet margin via the ...
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An ice-sheet scale comparison of eskers with modelled subglacial drainage routes
... of subglacial lakes and major drainage routes is a robust result achieved irrespective of the model run used from this subensemble (see ...size. Subglacial drainage routes ...down ...
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Subglacial drainage patterns of Devon Island, Canada: detailed comparison of rivers and subglacial meltwater channels
... and drainage network morphology, to then revisit and expand the identification methods listed in Greenwood et ...of subglacial and fluvial incised channels longitudinal profiles, photogramme- try, KLS data, ...
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Oscillatory subglacial drainage in the absence of surface melt
... A naïve application of the parameter values in Schoof (2010) combined with geometrical parameters that are represen- tative for South Glacier results in effective pressures that are significantly larger than those ...
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Supraglacial forcing of subglacial drainage in the ablation zone of the Greenland ice sheet
... efficient subglacial system therefore follows upglacier development of supraglacial drainage and proceeds in a stepwise fashion as new input points become active ...glacier drainage systems [ Nienow ...
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Morphometry and pattern of a large sample (>20,000) of Canadian eskers: new insights regarding subglacial drainage beneath ice sheets
... To date, no large-scale, systematic quanti fi cation of the spatial patterns and morphometry of eskers has been undertaken. The aim of this paper is to address this shortfall by producing the fi rst large- scale ...
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Characterization of the englacial and subglacial drainage system in a high Arctic cold glacier by speleological mapping and ground penetrating radar
... describe subglacial and englacial structures exposed in the conduit, which shed light on the former dynamic behaviour of the ...of subglacial traction till, from which till-filled fractures extend upward ...
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Potential subglacial lakes and meltwater drainage pathways beneath the Antarctic and Greenland ice sheets
... potential subglacial lake locations and meltwater drainage pathways beneath the Antarctic and Greenland ice ...known subglacial lakes beneath the Antarctic Ice ...of subglacial lakes remain to ...
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Rapidly changing subglacial hydrological pathways at a tidewater glacier revealed through simultaneous observations of water pressure, supraglacial lakes, meltwater plumes and surface velocities
... Abstract. Subglacial hydrological processes at tidewater glaciers remain poorly understood due to the difficulty in obtaining direct measurements and lack of empirical veri- fication for modelling ...the ...
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Greenland ice sheet annual motion insensitive to spatial variations in subglacial hydraulic structure
... the subglacial drainage system, not the channelized areas, were responsible for their observed late summer slowdown in ice ...channelized drainage features (or VPAs), may therefore provide a ...
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Brief Communication: Sudden drainage of a subglacial lake beneath the Greenland Ice Sheet
... and subglacial path- ways. The supraglacial drainage system is typified by den- dritic river systems and abundant meltwater lakes, ranging up to several kilometers ...and subglacial drainage ...
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Antarctic subglacial hydrology: current knowledge and future challenges
... Antarctic subglacial hydrology, there remain few observations targeted towards monitoring changes in the subglacial hydrological ...of subglacial water sources and fl ows ...the subglacial ...
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Brief communication: Subglacial lake drainage beneath Isunguata Sermia, West Greenland: geomorphic and ice dynamic effects
... its drainage has impacted ice flow ...initial drainage, any acceleration must have been extremely rapid (< the 12 d re- peat period imagery used to calculate the velocities) and of smaller overall ...
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Recent advances in our understanding of the role of meltwater in the Greenland ice sheet system
... transport) drainage routing, large ice thicknesses (100 – > 1000 m) and rapid motion (~ 100 m year − 1 ) provide the ideal conditions for both generating and evacuating large volumes of subglacial ...
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Brief communication : subglacial lake drainage beneath Isunguata Sermia, west Greenland : geomorphic and ice dynamic effects
... its drainage has impacted ice flow ...initial drainage, any acceleration must have been extremely rapid (< the 12 d re- peat period imagery used to calculate the velocities) and of smaller overall ...
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Brief communication: Subglacial lake drainage beneath Isunguata Sermia, West Greenland: geomorphic and ice dynamic effects
... three subglacial lakes present an extremely ac- cessible target for future geophysical characterization and ac- tive lake ...lake drainage and how does drainage evolve down- stream? How do the lakes ...
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