Sentences with phrase «subglacial water»
"Subglacial water" refers to water that is located beneath a glacier or ice sheet. It is the water that exists in liquid form underneath the frozen surface of the ice. Full definition
These observations reveal a widespread, dynamic subglacial water system which may exert an important control on ice flow and mass balance.
realclimate.org
Similar subglacial water activity in Greenland would seem to fill the bill nicely, in particular because it would also explain the sharp changes in outlet glacier speed.
SALSA will gather data from permanent GPS stations to better understand subglacial water flow's influence on the larger ice sheet system and improve subglacial lake modeling through comparing our model's estimates against geochemical data.
Ice deformation data from NASA's ICEsat, which indicates subglacial water movement, suggest that the lake has completely filled and drained twice since data - taking began in 2003.
«Although the Devon hypersaline subglacial lakes are very unique discoveries, we may find networks of brine - rich subglacial water systems elsewhere in the Canadian Arctic.»
This information would help Tulaczyk understand whether subglacial water lubricates the flow of ice, and whether it might play a role in the runaway acceleration of glaciers that has occurred in some parts of Antarctica.
Antarctic subglacial water: origin, evolution and ecology.
The data suggested that, like mountain glaciers, melt - induced glacier acceleration actually stops in years of intense melting once subglacial water erodes through the sediments and creates channels for water flow (Sundal et al. 2011).
However, Isortoq discharges tended lower than runoff simulations from the Modèle Atmosphérique Régional (MAR) regional climate model (0.056 — 0.112 km3 ⋅ d − 1 vs. ∼ 0.103 km3 ⋅ d − 1), and when integrated over the melt season, totaled just 37 — 75 % of MAR, suggesting nontrivial subglacial water storage even in this melt - prone region of the ice sheet.
The U.S. team is one of three international groups that sought to penetrate Antarctica's subglacial waters in the past month, seeking clues not only to glacial microbiology but also to ice sheet dynamics and the impact of climate change on the continent.
Pressure from the ice sheet overhead keeps the subglacial water liquid by lowering its freezing point several degrees.
Sasha Carter, a postdoctoral researcher at the Scripps Institution of Oceanography who studies the Antarctic ice sheet, said the new research «shows that subglacial water transport and the refreezing of that meltwater is reshaping the interior of East Antarctica at a scale previously not believed to be possible.»