Calvin Shackleton
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View article: Evidence of active subglacial lakes under a slowly moving coastal region of the Antarctic Ice Sheet
Evidence of active subglacial lakes under a slowly moving coastal region of the Antarctic Ice Sheet Open
Active subglacial lakes beneath the Antarctic Ice Sheet provide insights into the dynamic subglacial environment, with implications for ice-sheet dynamics and mass balance. Most previously identified lakes have been found upstream (>100 km…
View article: Evidence of active subglacial lakes under a slowly moving coastal region of the Antarctic Ice Sheet
Evidence of active subglacial lakes under a slowly moving coastal region of the Antarctic Ice Sheet Open
Active subglacial lakes beneath the Antarctic Ice Sheet provide insights into the dynamic subglacial environment, with implications for ice-sheet dynamics and mass balance. Most previously-identified lakes have been found upstream (>100 km…
View article: Subglacial lake detection in Dronning Maud Land, East Antarctica using ICESat-2
Subglacial lake detection in Dronning Maud Land, East Antarctica using ICESat-2 Open
Subglacial lakes beneath the Antarctic Ice Sheet are known to influence ice-sheet dynamics and form part of an extensive active hydrological network. Ice surface elevation anomalies from repeat-track altimetry can be useful for detecting s…
View article: Stochastic Simulations of Bed Topography Constrain Geothermal Heat Flow and Subglacial Drainage Near Dome Fuji, East Antarctica
Stochastic Simulations of Bed Topography Constrain Geothermal Heat Flow and Subglacial Drainage Near Dome Fuji, East Antarctica Open
Topographic variability beneath ice sheets regulates ice flow, basal melting, refreezing processes, and meltwater drainage. The preservation of old ice layers and basal ice stratigraphy is sensitive to these subglacial processes, and Dome …
View article: Stochastic Simulations of Bed Topography Constrain Geothermal Heat Flow and Subglacial Drainage near Dome Fuji, East Antarctica
Stochastic Simulations of Bed Topography Constrain Geothermal Heat Flow and Subglacial Drainage near Dome Fuji, East Antarctica Open
Dome Fuji, inland East Antarctica is one of only few regions where 1.5-Ma old ice can be preserved for investigating the mid-Pleistocene Transition. We used stochastic simulation and various radar datasets to generate a bed topography ense…
View article: Distinct modes of meltwater drainage and landform development beneath the last Barents Sea ice sheet
Distinct modes of meltwater drainage and landform development beneath the last Barents Sea ice sheet Open
The flow of glacial ice is impacted by basal meltwater drainage systems that fluctuate on a continuum from distributed, high-pressure environments to channelized, lower pressure networks. Understanding the long-term development of dominant…
View article: An interconnected palaeo-subglacial lake system in the central Barents Sea
An interconnected palaeo-subglacial lake system in the central Barents Sea Open
Drainage of meltwater beneath an ice sheet influences ice-flow dynamics. To better predict ice sheet behaviour, it is crucial to understand subglacial hydrological processes. Subglacial lakes are important components of the subglacial hydr…
View article: Methane hydrate mobilization by ice stream erosion during the last glacial
Methane hydrate mobilization by ice stream erosion during the last glacial Open
<p>During the past ~2.6 Ma, some 30 glaciations have caused episodic high pressure and low temperature conditions and forced growth and decay of extensive subglacial methane hydrate accumulations globally. Research on Arctic methane …
View article: Ice‐margin retreat and grounding‐zone dynamics during initial deglaciation of the Storfjordrenna Ice Stream, western Barents Sea
Ice‐margin retreat and grounding‐zone dynamics during initial deglaciation of the Storfjordrenna Ice Stream, western Barents Sea Open
Processes occurring at the grounding zone of marine terminating ice streams are crucial to marginal stability, influencing ice discharge over the grounding‐line, and thereby regulating ice‐sheet mass balance. We present new marine geophysi…
View article: Subglacial hydrology of the Fennoscandian and Barents Sea ice sheets
Subglacial hydrology of the Fennoscandian and Barents Sea ice sheets Open
The drainage of meltwater beneath ice sheets exerts a fundamental control on ice flow variability, by regulating the lubrication of the ice-bed interface, and determining subglacial sediment shear strengths. This thesis investigates meltwa…
View article: Retreat patterns and dynamics of the Sentralbankrenna glacial system, central Barents Sea
Retreat patterns and dynamics of the Sentralbankrenna glacial system, central Barents Sea Open
The Barents Sea Ice Sheet (BSIS) is a good palaeo-analogue for the present day West Antarctic Ice Sheet. Both were marine-based ice sheets, particularly vulnerable to ocean warming and sea-level rise. Understanding the BSIS ice dynamics an…