Results 181 to 190 of about 2,018 (207)
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The impact of snow line altitude on subglacial sediment export
2023Large Alpine glaciers typically export significant quantities of subglacially eroded sediment to their downstream environments via meltwater streams. The supply of this glaciogenically-produced sediment has an extensive impact on landform genesis and evolution; downstream ecology and ecosystem succession; river morphology and flood risk management ...
Matt Jenkin +4 more
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Subglacial Sediment Dispersal and till Composition
The Journal of Geology, 1987Dispersal of subglacial sediment down-ice from its bedrock source assumes the form of a negative exponential decay curve. Dispersal decay curves can be quantified by their decay constants, half-distances ( = half-lives), and total transport distances.
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8 Subglacial Environments, Sediments and Landforms at the Margins of Mýrdalsjökull
Developments in Quaternary Sciences, 2010Abstract Sedimentological research has benefited from the new subglacial landscapes exposed during the retreat from the Little Ice Age glacier maximum. For instance, the north margin of Mýrdalsjokull has retreated 1.5–2 km since the late nineteenth century, and an extensive subglacial till plain has appeared.
Anders Schomäcker +2 more
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The subglacial sediment system
1987info:eu-repo/semantics ...
Souchez, Roland, Lorrain, Reginald
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Behaviour of subglacial sediment and basal ice in a cold glacier
Geological Society, London, Special Publications, 2000Abstract Tunnels in glaciers offer unique opportunities for examining basal processes. At Suess Glacier in the Taylor Valley, Antarctica, a 25 m tunnel excavated into the bed of the glacier provides access to a 3.2m thick basal zone and the ice-substrate contact.
Fitzsimons, Sean +2 more
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Graph analysis for subglacial hydrology and sediment flux to the ocean
2023The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
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A new subglacial sediment deformation discharge rule
Movement of glaciers over (soft) sediment beds can deform the underlying sediment, transporting it in the direction of glacier flow. This subglacial sediment discharge can vary spatially, leading to net erosion in some areas and deposition in others—stripping some areas free of sediment, while others accumulate thick deposits— ...Lucas Zoet +2 more
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Subglacial hydrology and drumlin sediments in connemara, western ireland
Geografiska Annaler: Series A, Physical Geography, 2014Sediment‐cored drumlins are uncommon across the glacially eroded granite bedrock of Connemara (west County alway, western reland).
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Striated clast pavements: Products of deforming subglacial sediment?
Geology, 1991Studies of modern glaciers have recently drawn attention to the importance of subglacial sediment deformation to glacier dynamics and processes. Inferences regarding the probable shear strength of this sediment imply that large clasts may in some cases sink to underlying rigid sediment, where abrasion by overlying deforming sediment could occur.
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The Biogeochemical Legacy of Arctic Subglacial Sediments Exposed by Glacier Retreat
Global Biogeochemical Cycles, 2022Tyler J Kohler +2 more
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