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Outputs (133)

The deglacial history of 79N glacier and the Northeast Greenland Ice Stream (2024)
Journal Article
Roberts, D. H., Lane, T. P., Jones, R. S., Bentley, M. J., Darvill, C. M., Rodes, A., …Humbert, A. (2024). The deglacial history of 79N glacier and the Northeast Greenland Ice Stream. Quaternary Science Reviews, 336, Article 108770. https://doi.org/10.1016/j.quascirev.2024.108770

The Northeast Greenland Ice Stream (NEGIS) is the main artery for ice discharge from the northeast sector of the Greenland Ice Sheet (GrIS) to the North Atlantic. Understanding the past, present and future stability of the NEGIS with respect to atmos... Read More about The deglacial history of 79N glacier and the Northeast Greenland Ice Stream.

Extensive palaeo-surfaces beneath the Evans–Rutford region of the West Antarctic Ice Sheet control modern and past ice flow (2024)
Journal Article
Carter, C. M., Bentley, M. J., Jamieson, S. S. R., Paxman, G. J. G., Jordan, T. A., Bodart, J. A., …Napoleoni, F. (2024). Extensive palaeo-surfaces beneath the Evans–Rutford region of the West Antarctic Ice Sheet control modern and past ice flow. The Cryosphere, 18(5), 2277-2296. https://doi.org/10.5194/tc-18-2277-2024

The subglacial landscape of Antarctica records and influences the behaviour of its overlying ice sheet. However, in many places, the evolution of the landscape and its control on ice sheet behaviour have not been investigated in detail. Using recentl... Read More about Extensive palaeo-surfaces beneath the Evans–Rutford region of the West Antarctic Ice Sheet control modern and past ice flow.

Alpine topography of the Gamburtsev Subglacial Mountains, Antarctica, mapped from ice sheet surface morphology (2024)
Journal Article
Lea, E. J., Jamieson, S. S. R., & Bentley, M. J. (2024). Alpine topography of the Gamburtsev Subglacial Mountains, Antarctica, mapped from ice sheet surface morphology. The Cryosphere, 18(4), 1733-1751. https://doi.org/10.5194/tc-18-1733-2024

Landscapes buried beneath the Antarctic Ice Sheet preserve information about the geologic and geomorphic evolution of the continent both before and during the wide-scale glaciation that began roughly 34×106 years ago. Since the inception of this ice... Read More about Alpine topography of the Gamburtsev Subglacial Mountains, Antarctica, mapped from ice sheet surface morphology.

Subglacial valleys preserved in the highlands of south and east Greenland record restricted ice extent during past warmer climates (2024)
Journal Article
Paxman, G. J. G., Jamieson, S. S. R., Dolan, A. M., & Bentley, M. J. (2024). Subglacial valleys preserved in the highlands of south and east Greenland record restricted ice extent during past warmer climates. The Cryosphere, 18(3), 1467-1493. https://doi.org/10.5194/tc-18-1467-2024

The Greenland Ice Sheet is a key contributor to contemporary global sea level rise, but its long-term history and response to episodes of warming in Earth's geological past remain uncertain. The terrain covered by the ice sheet comprises ∼ 79 % of Gr... Read More about Subglacial valleys preserved in the highlands of south and east Greenland record restricted ice extent during past warmer climates.

Antarctic ice sheet paleo-constraint database (2023)
Journal Article
Lecavalier, B. S., Tarasov, L., Balco, G., Spector, P., Hillenbrand, C., Buizert, C., …Bamber, J. (2023). Antarctic ice sheet paleo-constraint database. Earth System Science Data, https://doi.org/10.5194/essd-2022-398

We present a database of observational constraints on past Antarctic Ice Sheet changes during the last glacial cycle intended to consolidate the observations that represent our understanding of past Antarctic changes, for state-space estimation, and... Read More about Antarctic ice sheet paleo-constraint database.

Direct measurement of warm Atlantic Intermediate Water close to the grounding line of Nioghalvfjerdsfjorden (79° N) Glacier, northeast Greenland (2023)
Journal Article
Bentley, M. J., Smith, J. A., Jamieson, S. S., Lindeman, M. R., Rea, B. R., Humbert, A., …Roberts, D. H. (2023). Direct measurement of warm Atlantic Intermediate Water close to the grounding line of Nioghalvfjerdsfjorden (79° N) Glacier, northeast Greenland. The Cryosphere, 17(5), 1821-1837. https://doi.org/10.5194/tc-17-1821-2023

The Northeast Greenland Ice Stream has recently seen significant change to its floating margins and has been identified as vulnerable to future climate warming. Inflow of warm Atlantic Intermediate Water (AIW) from the continental shelf has been obse... Read More about Direct measurement of warm Atlantic Intermediate Water close to the grounding line of Nioghalvfjerdsfjorden (79° N) Glacier, northeast Greenland.

Holocene history of the 79° N ice shelf reconstructed from epishelf lake and uplifted glaciomarine sediments (2023)
Journal Article
Smith, J. A., Callard, L., Bentley, M. J., Jamieson, S. S., Sánchez-Montes, M. L., Lane, T. P., …Roberts, D. H. (2023). Holocene history of the 79° N ice shelf reconstructed from epishelf lake and uplifted glaciomarine sediments. The Cryosphere, 17(3), https://doi.org/10.5194/tc-17-1247-2023

Nioghalvfjerdsbrae, or 79◦ N Glacier, is the largest marine-terminating glacier draining the Northeast Greenland Ice Stream (NEGIS). In recent years, its ∼ 70 km long fringing ice shelf (hereafter referred to as the 79◦ N ice shelf) has thinned, and... Read More about Holocene history of the 79° N ice shelf reconstructed from epishelf lake and uplifted glaciomarine sediments.

The geomorphological record of an ice stream to ice shelf transition in Northeast Greenland (2023)
Journal Article
Lane, T., Darvill, C., Rea, B., Bentley, M., Smith, J., Jamieson, S., …Roberts, D. (2023). The geomorphological record of an ice stream to ice shelf transition in Northeast Greenland. Earth Surface Processes and Landforms, 48(7), 1321-1341. https://doi.org/10.1002/esp.5552

Understanding ice stream dynamics over decadal to millennial timescales is crucial for improving numerical model projections of ice sheet behaviour and future ice loss. In marine-terminating settings, ice shelves play a critical role in controlling i... Read More about The geomorphological record of an ice stream to ice shelf transition in Northeast Greenland.

The impact of Holocene deglaciation and glacial dynamics on the landscapes and geomorphology of Potter Peninsula, King George Island (Isla 25 Mayo), NW Antarctic Peninsula (2023)
Journal Article
Heredia Barión, P. A., Strelin, J. A., Roberts, S. J., Spiegel, C., Wacker, L., Niedermann, S., …Kuhn, G. (2023). The impact of Holocene deglaciation and glacial dynamics on the landscapes and geomorphology of Potter Peninsula, King George Island (Isla 25 Mayo), NW Antarctic Peninsula. Frontiers in Earth Science, 10, Article 1073075. https://doi.org/10.3389/feart.2022.1073075

The timing and impact of deglaciation and Holocene readvances on the terrestrial continental margins of the Antarctic Peninsula (AP) have been well-studied but are still debated. Potter Peninsula on King George Island (KGI) (Isla 25 de Mayo), South S... Read More about The impact of Holocene deglaciation and glacial dynamics on the landscapes and geomorphology of Potter Peninsula, King George Island (Isla 25 Mayo), NW Antarctic Peninsula.