Results 31 to 40 of about 12,531 (254)

Subglacial meltwater routes of the Fennoscandian Ice Sheet

open access: yesJournal of Maps, 2022
Subglacial drainage systems are crucial elements of glaciers and ice sheets because they modulate ice flow velocity. However, logistical challenges of measuring subglacial processes beneath contemporary ice and natural limitations in long-term monitoring
Nico Dewald   +2 more
doaj   +1 more source

Drainage and refill of an Antarctic Peninsula subglacial lake reveal an active subglacial hydrological network [PDF]

open access: yesThe Cryosphere, 2022
The presence of subglacial lakes and subglacial hydrological networks under the East and West Antarctic ice sheets is now relatively well understood, whilst their influence on ice dynamics is the subject of ongoing research.
D. A. Hodgson   +4 more
doaj   +1 more source

Laboratory experiments on till deformation: constraining the subglacial processes [PDF]

open access: gold, 2018
Piotrowski, Jan   +5 more
openaire   +2 more sources

Tracking coarse sediment in an Alpine subglacial channel using radio-tagged particles

open access: yesJournal of Glaciology, 2023
We present a method for tracking radio-tagged pebbles and cobbles through subglacial meltwater channels under shallow temperate glaciers. Natural particles tagged with active radio transmitters were injected directly into a large subglacial channel 300 m
Matt Jenkin   +6 more
doaj   +1 more source

Assessing the Environmental Consequences of the Generation and Alteration of Mafic Volcaniclastic Deposits During Large Igneous Province Emplacement

open access: yesGeophysical Monograph Series, Page 117-131., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Benjamin Black   +4 more
wiley  

+1 more source

Constraints on subglacial melt fluxes from observations of active subglacial lake recharge

open access: yesJournal of Glaciology, 2023
Active subglacial lakes provide a rare glimpse of the subglacial environment and hydrological processes at play. Several studies contributed to establishing active subglacial lake inventories and document lake drainage and connection, but few focused on ...
George Malczyk   +4 more
doaj   +1 more source

Drag forces at the ice-sheet bed and resistance of hard-rock obstacles: the physics of glacial ripping

open access: yesJournal of Glaciology, 2023
Glacial ripping involves glaciotectonic disintegration of rock hills and extensive removal of rock at the ice-sheet bed, triggered by hydraulic jacking caused by fluctuating water pressures.
Maarten Krabbendam   +4 more
doaj   +1 more source

Reconstructing subglacial lake activity with an altimetry-based inverse method

open access: yesJournal 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

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