All Outputs (34)

Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica (2024)
Journal Article
Braddock, S., Venturelli, R. A., Nichols, K., Moravec, E., Boeckmann, G. V., Campbell, S., …Goehring, B. (2024). Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica. Annals of Glaciology, 1-11. https://doi.org/10.1017/aog.2024.12

We review successes and challenges from five recent subglacial bedrock drilling campaigns intended to find evidence for Antarctic Ice Sheet retreat during warm periods in the geologic past. Insights into times when the polar ice sheets were smaller t... Read More about Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica.

An ensemble of Antarctic deglacial simulations constrained by geological observations (2022)
Journal Article
Pittard, M., Whitehouse, P., Bentley, M., & Small, D. (2022). An ensemble of Antarctic deglacial simulations constrained by geological observations. Quaternary Science Reviews, 298, Article 107800. https://doi.org/10.1016/j.quascirev.2022.107800

The Antarctic ice sheet has the potential to make a significant contribution to future sea-level rise. Understanding this potential and making projections of future ice sheet mass change requires use of numerical models. Confidence in model projectio... Read More about An ensemble of Antarctic deglacial simulations constrained by geological observations.

Growth and retreat of the last British–Irish Ice Sheet, 31 000 to 15 000 years ago: the BRITICE‐CHRONO reconstruction (2022)
Journal Article
Clark, C. D., Ely, J. C., Hindmarsh, R. C., Bradley, S., Ignéczi, A., Fabel, D., …Wilson, P. (2022). Growth and retreat of the last British–Irish Ice Sheet, 31 000 to 15 000 years ago: the BRITICE‐CHRONO reconstruction. Boreas: An International Journal of Quaternary Research, 51(4), 699-758. https://doi.org/10.1111/bor.12594

The BRITICE-CHRONO consortium of researchers undertook a dating programme to constrain the timing of advance, maximum extent and retreat of the British–Irish Ice Sheet between 31 000 and 15 000 years before present. The dating campaign across Ireland... Read More about Growth and retreat of the last British–Irish Ice Sheet, 31 000 to 15 000 years ago: the BRITICE‐CHRONO reconstruction.

Investigating the roles of relative sea-level change and glacio-isostatic adjustment on the retreat of a marine based ice stream in NW Scotland (2022)
Journal Article
Simms, A. R., Best, L., Shennan, I., Bradley, S. L., Small, D., Bustamante, E., …Sefton, J. (2022). Investigating the roles of relative sea-level change and glacio-isostatic adjustment on the retreat of a marine based ice stream in NW Scotland. Quaternary Science Reviews, 277, Article 107366. https://doi.org/10.1016/j.quascirev.2021.107366

The record of ice-sheet demise since the last glacial maximum (LGM) provides an opportunity to test the relative importance of instability mechanisms, including relative sea-level (RSL) change, controlling ice-sheet retreat. Here we examine the recor... Read More about Investigating the roles of relative sea-level change and glacio-isostatic adjustment on the retreat of a marine based ice stream in NW Scotland.

Ice-free valleys in the Neptune Range of the Pensacola Mountains, Antarctica: glacial geomorphology, geochronology and potential as palaeoenvironmental archives (2021)
Journal Article
Small, D., Bentley, M. J., Evans, D. J., Hein, A. S., & Freeman, S. P. (2021). Ice-free valleys in the Neptune Range of the Pensacola Mountains, Antarctica: glacial geomorphology, geochronology and potential as palaeoenvironmental archives. Antarctic Science, 33(4), 428-455. https://doi.org/10.1017/s0954102021000237

We describe the glacial geomorphology and initial geochronology of two ice-free valley systems within the Neptune Range of the Pensacola Mountains, Antarctica. These valleys are characterized by landforms associated with formerly more expanded ice sh... Read More about Ice-free valleys in the Neptune Range of the Pensacola Mountains, Antarctica: glacial geomorphology, geochronology and potential as palaeoenvironmental archives.

Exploring controls of the early and stepped deglaciation on the western margin of the British Irish Ice Sheet (2021)
Journal Article
Benetti, S., Chiverrell, R. C., Cofaigh, C. Ó., Burke, M., Medialdea, A., Small, D., …Weilbach, K. (2021). Exploring controls of the early and stepped deglaciation on the western margin of the British Irish Ice Sheet. Journal of Quaternary Science, 36(5), 833 - 870. https://doi.org/10.1002/jqs.3315

New optically stimulated luminescence dating and Bayesian models integrating all legacy and BRITICE-CHRONO geochronology facilitated exploration of the controls on the deglaciation of two former sectors of the British–Irish Ice Sheet, the Donegal Bay... Read More about Exploring controls of the early and stepped deglaciation on the western margin of the British Irish Ice Sheet.

Maximum extent and readvance dynamics of the Irish Sea Ice Stream and Irish Sea Glacier since the Last Glacial Maximum (2021)
Journal Article
Scourse, J., Chiverrell, R., Smedley, R., Small, D., Burke, M., Saher, M., …Clark, C. (2021). Maximum extent and readvance dynamics of the Irish Sea Ice Stream and Irish Sea Glacier since the Last Glacial Maximum. Journal of Quaternary Science, 1-25. https://doi.org/10.1002/jqs.3313

The BRITICE‐CHRONO Project has generated a suite of recently published radiocarbon ages from deglacial sequences offshore in the Celtic and Irish seas and terrestrial cosmogenic nuclide and optically stimulated luminescence ages from adjacent onshore... Read More about Maximum extent and readvance dynamics of the Irish Sea Ice Stream and Irish Sea Glacier since the Last Glacial Maximum.

Pattern, style and timing of British–Irish Ice Sheet advance and retreat over the last 45 000 years: evidence from NW Scotland and the adjacent continental shelf (2021)
Journal Article
Bradwell, T., Fabel, D., Clark, C. D., Chiverrell, R. C., Small, D., Smedley, R. K., …Ó Cofaigh, C. (2021). Pattern, style and timing of British–Irish Ice Sheet advance and retreat over the last 45 000 years: evidence from NW Scotland and the adjacent continental shelf. Journal of Quaternary Science, 36(5), 871 - 933. https://doi.org/10.1002/jqs.3296

Predicting the future response of ice sheets to climate warming and rising global sea level is important but difficult. This is especially so when fast-flowing glaciers or ice streams, buffered by ice shelves, are grounded on beds below sea level. Wh... Read More about Pattern, style and timing of British–Irish Ice Sheet advance and retreat over the last 45 000 years: evidence from NW Scotland and the adjacent continental shelf.

The deglaciation of the western sector of the Irish Ice Sheet from the inner continental shelf to its terrestrial margin (2020)
Journal Article
Roberts, D., Ó Cofaigh, C., Ballantyne, C., Burke, M., Chiverrell, R., Evans, D., …Callard, S. (2020). The deglaciation of the western sector of the Irish Ice Sheet from the inner continental shelf to its terrestrial margin. Boreas: An International Journal of Quaternary Research, 49(3), 438-460. https://doi.org/10.1111/bor.12448

This paper provides a new deglacial chronology for retreat of the Irish Ice Sheet from the continental shelf of western Ireland to the adjoining coastline, a region where the timing and drivers of ice recession have never been fully constrained. Prev... Read More about The deglaciation of the western sector of the Irish Ice Sheet from the inner continental shelf to its terrestrial margin.

Oscillating retreat of the last British-Irish Ice Sheet on the continental shelf offshore Galway Bay, western Ireland (2019)
Journal Article
Callard, S. L., Ó Cofaigh, C., Benetti, S., Chiverrell, R. C., Van Landeghem, K. J., Saher, M. H., …Moreton, S. G. (2020). Oscillating retreat of the last British-Irish Ice Sheet on the continental shelf offshore Galway Bay, western Ireland. Marine Geology, 420, Article 106087. https://doi.org/10.1016/j.margeo.2019.106087

During the Last Glacial Maximum, the British-Irish Ice Sheet extended across the continental shelf offshore of Galway Bay, western Ireland, and reached a maximum westward extent on the Porcupine Bank. New marine geophysical data, sediment cores and r... Read More about Oscillating retreat of the last British-Irish Ice Sheet on the continental shelf offshore Galway Bay, western Ireland.

Pattern, style and timing of British–Irish Ice Sheet retreat: Shetland and northern North Sea sector (2019)
Journal Article
Bradwell, T., Small, D., Fabel, D., Clark, C. D., Chiverrell, R. C., Saher, M. H., …Ó Cofaigh, C. (2021). Pattern, style and timing of British–Irish Ice Sheet retreat: Shetland and northern North Sea sector. Journal of Quaternary Science, 36(5), 681-722. https://doi.org/10.1002/jqs.3163

The offshore sector around Shetland remains one of the least well‐studied parts of the former British–Irish Ice Sheet with several long‐standing scientific issues unresolved. These key issues include (i) the dominance of a locally sourced ‘Shetland i... Read More about Pattern, style and timing of British–Irish Ice Sheet retreat: Shetland and northern North Sea sector.

Recent progress on combining geomorphological and geochronological data with ice 1 sheet modelling, demonstrated using the last British-Irish Ice Sheet (2019)
Journal Article
Ely, J., Clark, C., Hindmarsh, R., Hughes, A., Greenwood, S., Bradley, S., …Small, D. (2021). Recent progress on combining geomorphological and geochronological data with ice 1 sheet modelling, demonstrated using the last British-Irish Ice Sheet. Journal of Quaternary Science, 36(5), 946-960. https://doi.org/10.1002/jqs.3098

Palaeo‐ice sheets are important analogues for understanding contemporary ice sheets, offering a record of ice sheet behaviour that spans millennia. There are two main approaches to reconstructing palaeo‐ice sheets. Empirical reconstructions use the a... Read More about Recent progress on combining geomorphological and geochronological data with ice 1 sheet modelling, demonstrated using the last British-Irish Ice Sheet.

Ice-stream demise dynamically conditioned by trough shape and bed strength (2019)
Journal Article
Bradwell, T., Small, D., Fabel, D., Smedley, R. K., Clark, C. C., Saher, M. H., …Ó Cofaigh, C. (2019). Ice-stream demise dynamically conditioned by trough shape and bed strength. Science Advances, 5(4), Article eaau1380. https://doi.org/10.1126/sciadv.aau1380

Ice sheet mass loss is currently dominated by fast-flowing glaciers (ice streams) terminating in the ocean as ice shelves and resting on beds below sea level. The factors controlling ice-stream flow and retreat over longer time scales (>100 years), e... Read More about Ice-stream demise dynamically conditioned by trough shape and bed strength.

Impact of glacial isostatic adjustment on cosmogenic surface-exposure dating (2019)
Journal Article
Jones, R., Whitehouse, P., Bentley, M., Small, D., & Dalton, A. (2019). Impact of glacial isostatic adjustment on cosmogenic surface-exposure dating. Quaternary Science Reviews, 212, 206-212. https://doi.org/10.1016/j.quascirev.2019.03.012

Calculating cosmogenic-nuclide surface-exposure ages is critically dependent on a knowledge of the altitude of the sample site. Changes in altitude have occurred through time as a result of glacial isostatic adjustment (GIA), potentially altering loc... Read More about Impact of glacial isostatic adjustment on cosmogenic surface-exposure dating.

ATAT 1.1, the Automated Timing Accordance Tool for comparing ice-sheet model output with geochronological data (2019)
Journal Article
Ely, J. C., Clark, C. D., Small, D., & Hindmarsh, R. C. (2019). ATAT 1.1, the Automated Timing Accordance Tool for comparing ice-sheet model output with geochronological data. Geoscientific Model Development, 12(3), 933-953. https://doi.org/10.5194/gmd-12-933-2019

Earth's extant ice sheets are of great societal importance given their ongoing and potential future contributions to sea-level rise. Numerical models of ice sheets are designed to simulate ice-sheet behaviour in response to climate changes but to be... Read More about ATAT 1.1, the Automated Timing Accordance Tool for comparing ice-sheet model output with geochronological data.

iceTEA: Tools for plotting and analysing cosmogenic-nuclide surface-exposure data from former ice margins (2019)
Journal Article
Jones, R., Small, D., Cahill, N., Bentley, M., & Whitehouse, P. (2019). iceTEA: Tools for plotting and analysing cosmogenic-nuclide surface-exposure data from former ice margins. Quaternary Geochronology, 51, 72-86. https://doi.org/10.1016/j.quageo.2019.01.001

Cosmogenic-nuclide surface-exposure data provide important constraints on the thickness, extent and behaviour of ice masses in the geological past. A number of online calculators provide the cosmogenic nuclide community with a means of easily calcula... Read More about iceTEA: Tools for plotting and analysing cosmogenic-nuclide surface-exposure data from former ice margins.

Antarctic ice sheet palaeo-thinning rates from vertical transects of cosmogenic exposure ages (2019)
Journal Article
Small, D., Pittard, M., Whitehouse, P., Jones, R., & Bentley, M. (2019). Antarctic ice sheet palaeo-thinning rates from vertical transects of cosmogenic exposure ages. Quaternary Science Reviews, 206, 65-80. https://doi.org/10.1016/j.quascirev.2018.12.024

We present a nontrivial correlation between the enhancement of the Higgs-fermion couplings and the Higgs pair production cross section in two Higgs doublet models with a flavor symmetry, with implications for LHC searches. This symmetry suppresses fl... Read More about Antarctic ice sheet palaeo-thinning rates from vertical transects of cosmogenic exposure ages.

Deglaciation chronology of the Donegal Ice Centre, north‐west Ireland (2018)
Journal Article
Wilson, P., Ballantyne, C. K., Benetti, S., Small, D., Fabel, D., & Clark, C. D. (2018). Deglaciation chronology of the Donegal Ice Centre, north‐west Ireland. Journal of Quaternary Science, 34(1), 16-28. https://doi.org/10.1002/jqs.3077

During the Last Glacial Maximum, Donegal in north‐west Ireland functioned as an independent centre of ice dispersal that separated and fed into the Donegal Bay Ice Lobe (sourced in the Irish Midlands) to the south and the Hebrides/Malin Sea Ice Strea... Read More about Deglaciation chronology of the Donegal Ice Centre, north‐west Ireland.

Extent and retreat history of the Barra Fan Ice Stream offshore western Scotland and northern Ireland during the last glaciation (2018)
Journal Article
Callard, S., Ó Cofaigh, C., Benetti, S., Chiverrell, R., Van Landeghem, K., Saher, M., …Moreton, S. (2018). Extent and retreat history of the Barra Fan Ice Stream offshore western Scotland and northern Ireland during the last glaciation. Quaternary Science Reviews, 201, 280-302. https://doi.org/10.1016/j.quascirev.2018.10.002

During the Last Glacial Maximum (LGM) the marine-terminating Barra Fan Ice Stream (BFIS), a major conduit of the British Irish Ice Sheet (BIIS), drained much of western Scotland and northwest Ireland with ice streaming onto the continental shelf of t... Read More about Extent and retreat history of the Barra Fan Ice Stream offshore western Scotland and northern Ireland during the last glaciation.

Ice margin oscillations during deglaciation of the northern Irish Sea Basin (2018)
Journal Article
Chiverrell, R., Smedley, R., Small, D., Ballantyne, C., Burke, M., Callard, S., …Wilson, P. (2018). Ice margin oscillations during deglaciation of the northern Irish Sea Basin. Journal of Quaternary Science, 33(7), 739-762. https://doi.org/10.1002/jqs.3057

We present a new chronology to constrain ice‐margin retreat in the northern Irish Sea Basin. Estimates on the timing of ice thinning derived from surface exposure ages for boulders from the summits of the Isle of Man and south‐west Cumbria suggest th... Read More about Ice margin oscillations during deglaciation of the northern Irish Sea Basin.