Results 121 to 130 of about 5,522 (216)

Antarctic subglacial hydrology - interactions of subglacial lakes, basal water flow and ice dynamics

, 2014
The Antarctic Ice Sheet influences the global temperature and sea level by complex interactions with the atmosphere and the ocean and is thus an important factor in the Earth's climate system. Recent climate assessments reveal a steady increase of global temperatures and an on-going shrinking of glaciers and ice sheets.
openaire   +2 more sources

Transient subglacial water routing efficiency modulates ice velocities prior to surge termination on Sít’ Kusá, Alaska

Journal of Glaciology
Glacier surges are opportunities to study large amplitude changes in ice velocities and accompanying links to subglacial hydrology. Although the surge phase is generally explained as a disruption in the glacier's ability to drain water from the bed, the ...
Yoram Terleth, Timothy C. Bartholomaus, Jukes Liu, Flavien Beaud, Thomas Dylan Mikesell, Ellyn Mary Enderlin   +5 more
doaj   +1 more source

Modeling the response of subglacial drainage at Paakitsoq, west Greenland, to 21^st century climate change [PDF]

, 2014
Although the Greenland Ice Sheet (GrIS) is losing mass at an accelerating rate, much uncertainty remains about how surface runoff interacts with the subglacial drainage system and affects water pressures and ice velocities, both currently, and into the ...
Arnold, NS, Banwell, AF, Mayaud, JR, Willis, IC   +3 more
core  

Entrained Water in Basal Ice Suppresses Radar Bed‐Echo Power at Active Subglacial Lakes

Geophysical Research Letters
Subglacial lakes have been mapped across Antarctica with two methods, radio‐echo sounding (RES) and ice‐surface deformation. At sites where both are coincident, these methods typically provide conflicting interpretations about the ice‐bed interface. With
B. H. Hills, M. R. Siegfried, D. M. Schroeder   +2 more
doaj   +1 more source

Simulation of groundwater age evolution during the Wisconsinian glaciation over the Canadian landscape [PDF]

, 2018
The simulation of groundwater age (residence time) is used to study the impact of the Wisconsinian glaciation on the Canadian continental groundwater flow system.
Lemieux, Jean-Michel, Sudicky, Edward
core  

Subglacial discharge accelerates future retreat of Denman and Scott Glaciers, East Antarctica. [PDF]

Sci Adv, 2023
Pelle T, Greenbaum JS, Dow CF, Jenkins A, Morlighem M.   +4 more
europepmc   +1 more source

Outbursts from an ice-marginal lake in Antarctica in 1969-1971 and 2017, revealed by aerial photographs and satellite data. [PDF]

Sci Rep, 2023
Hata S, Kawamata M, Doi K.
europepmc   +1 more source

The Annual Glaciohydrology Cycle in the Ablation Zone of the Greenland Ice Sheet: Part 2. Observed and Modeled Ice Flow [PDF]

Ice velocities observed in 2005/06 at three GPS stations along the Sermeq Avannarleq flowline, West Greenland, are used to characterize an observed annual velocity cycle.
Abdalati, Waleed, Anderson, Robert S., Colgan, William Terence, Phillips, Thomas, Rajaram, Harihar, Steffen, Konrad, Zwally, H. Jay   +6 more
core   +1 more source

Improved representation of laminar and turbulent sheet flow in subglacial drainage models

Journal of Glaciology
Subglacial hydrology models struggle to reproduce seasonal drainage patterns that are consistent with observed subglacial water pressures and surface velocities. We modify the standard sheet-flow parameterization within a coupled sheet–channel subglacial
Tim Hill, Gwenn Elizabeth Flowers, Matthew James Hoffman, Derek Bingham, Mauro Angelo Werder   +4 more
doaj   +1 more source

Glacial Water: A Dynamic Microbial Medium. [PDF]

Microorganisms, 2023
Varliero G, Lebre PH, Frey B, Fountain AG, Anesio AM, Cowan DA.   +5 more
europepmc   +1 more source