Siliceous subglacial deposits: archives of subglacial processes during the Last Glacial Maximum [PDF]
Journal of Glaciology, 2021 We report detailed chemical and isotopic data from a subglacial siliceous deposit on andesitic bedrock recently exposed by glacier retreat. Whereas a single,
Shalev Siman-Tov +4 more
doaj +2 more sources
Subglacial drainage processes at a High Arctic polythermal valley glacier [PDF]
Journal of Glaciology, 2005 AbstractDye-tracer experiments undertaken over two summer melt seasons at polythermal John Evans Glacier, Ellesmere Island, Canada, were designed to investigate the character of the subglacial drainage system and its evolution over a melt season. In both summers, dye injections were conducted at several moulins and traced to a single subglacial outflow.
Bingham, Robert George +3 more
openaire +5 more sources
Chemical and isotopic switching within the subglacial environment of a high Arctic glacier. [PDF]
, 2006 Natural environmental isotopes of nitrate, sulphate and inorganic carbon are discussed in conjunction with major ion chemistry of subglacial runoff from a High Arctic glacier, Midre Lovénbreen, Svalbard. The chemical composition of meltwaters is observed
Hodson, Andrew +2 more
core +5 more sources
Will subglacial rhyolite eruptions be explosive or intrusive? Some insights from analytical models. [PDF]
, 2007 Simple analytical models of subglacial eruptions are presented, which simulate evolving subglacial cavities and volcanic edifices during rhyolitic eruptions beneath temperate glaciers.
Gilbert, Jennie S. +2 more
core +5 more sources
Subglacial erosion has the potential to sustain microbial processes in Subglacial Lake Whillans, Antarctica [PDF]
Communications Earth & Environment, 2021 AbstractSubglacial Lake Whillans lies below around 800 m of Antarctic ice and is isolated from fresh sources of photosynthetic organic matter to sustain life. The diverse microbial ecosystems within the lake and underlying sediments are therefore dependent on a combination of relict, overridden, marine-derived organic matter and mineral-derived energy.
Beatriz Gill-Olivas +6 more
openaire +4 more sources
Subglacial processes, deposits and landforms—introduction
BoreasJan A. Piotrowski +3 more
doaj +4 more sources
Melting of the glacier base during a small-volume subglacial rhyolite eruption: evidence from Blahnukur, Iceland. [PDF]
, 2002 Although observations of recent volcanic eruptions beneath Vatnajokull, Iceland have improved the understanding of ice deformation and meltwater drainage, little is known about the processes that occur at the glacier base.
Tuffen, H +3 more
core +5 more sources
Models of ice melting and edifice growth during subglacial basaltic eruptions. [PDF]
, 2007 Models of the early stages of basaltic eruptions beneath temperate glaciers are presented that consider the evolving sizes of volcanic edifices emplaced within subglacial cavities.
Tuffen, Hugh
core +4 more sources
Products of an effusive subglacial rhyolite eruption: Blahnukur, Torfajokull, Iceland. [PDF]
, 2001 . We present field observations from Blahnukur, a small volume (400 m thick. Lithofacies associations attest to complex patterns of volcano-ice interaction.
Tuffen, H. +2 more
core +5 more sources
Reconstructing subglacial lake activity with an altimetry-based inverse method
Journal of Glaciology, 2023 Subglacial lake water-volume changes produce ice-elevation anomalies that provide clues about water flow beneath glaciers and ice sheets. Significant challenges remain in the quantitative interpretation of these elevation-change anomalies because the ...
Aaron G. Stubblefield +4 more
doaj +1 more source