Results 31 to 40 of about 2,018 (207)
Hydraulic impacts of glacier advance over a sediment bed [PDF]
, 2006 A sedimentary sequence of till overlying a gravel aquifer was instrumented with water-pressure transducers prior to a small, anticipated surge of the margin of the glacier Breiðamerkurjökull in Iceland.
Zatsepin, Sergei, Boulton, Geoffrey
core +1 more source
Subglacial landforms beneath Rutford Ice Stream, Antarctica: detailed bed topography from ice-penetrating radar [PDF]
Earth System Science Data, 2016 We present a digital elevation model of the bed of Rutford Ice Stream, Antarctica, derived from radio-echo sounding data. The data cover an 18 × 40 km area immediately upstream of the grounding line of the ice stream.
E. C. King, H. D. Pritchard, A. M. Smith
doaj +1 more source
Technologies for retrieving sediment cores in Antarctic subglacial settings [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016 Accumulations of sediment beneath the Antarctic Ice Sheet contain a range of physical and chemical proxies with the potential to document changes in ice sheet history and to identify and characterize life in subglacial settings. Retrieving subglacial sediments and sediment cores presents several unique challenges to existing technologies.
Hodgson, Dominic A. +14 more
openaire +5 more sources
Fundamental Research, 2021 High Mountain Asia glaciers are currently ignored in the estimation of global greenhouse gas budgets (e.g., methane (CH4) and carbon dioxide (CO2)). Similar to the Asian Water Tower and Third Pole, the Tibetan Plateau (TP) hosts the largest volume of ...
Yulan Zhang +5 more
doaj +1 more source
The mechanics of subglacial sediment: an example of new “transitional” behaviour [PDF]
Canadian Geotechnical Journal, 2010 A series of isotropic compression tests and drained and undrained triaxial compression tests have been performed on glacial sediment from Iceland. Langjökull sediment, which is well graded, is thought to have reached a critical grading during deposition and transportation.
Altuhafi, F, Baudet, BA, Sammonds, P
openaire +3 more sources
Bed-type variability and till (dis)continuity beneath Thwaites Glacier, West Antarctica
Annals of Glaciology, 2019 Recent seismic measurements from upper Thwaites Glacier indicate that the bed-type variability is closely related to the along-flow basal topography. In high-relief subglacial highlands, stoss sides of topographic highs have a relatively higher acoustic ...
Atsuhiro Muto +3 more
doaj +1 more source
Journal of Glaciology, 2023 This study presents the first light detection and ranging (LiDAR)-based morphometric description of a water blister from a past ice-sheet bed caused by rapid supraglacial drainage.
Joni Mäkinen +6 more
doaj +1 more source
Origin and significance of 'dispersed facies' basal ice: Svínafellsjökull, Iceland [PDF]
, 2010 Dispersed facies basal ice - massive (i.e. structureless) ice with dispersed debris aggregates - is present at the margins of many glaciers and, as a product of internal glacial processes, has the potential to provide important information about the ...
Nicholas G. Midgley (7190381) +15 more
core +1 more source
Seismic reflection data show a local sedimentation bedform at the subglacial trough system of Isunnguata Sermia, West Greenland, September 2013 [PDF]
, 2022 To check the possible presence of a subglacial lake in Isunnguata Sermia, West Greenland we collected two 5 km perpendicular profiles of seismic reflection data.
Hofstede, Coen Matthijs
core +1 more source
Annals of Glaciology, 2019 Late Holocene sediment deposits in Pine Island Bay, West Antarctica, are hypothesized to be linked to intensive meltwater drainage during the retreat of the paleo-Pine Island Ice Stream after the Last Glacial Maximum. The uppermost sediment units show an
Dustin M. Schroeder +3 more
doaj +1 more source