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Outputs (12)

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., Lloyd, J. M., McClymont, E. L., Darvill, C. M., Rea, B. R., O'Cofaigh, C., Gulliver, P., Ehrmann, W., Jones, R. S., & 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., Ó Cofaigh, C., & 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.

Controls on the formation of turbidity current channels associated with marine-terminating glaciers and ice sheets (2019)
Journal Article
Pope, E. L., Normandeau, A., Ó Cofaigh, C., Stokes, C. R., & Talling, P. J. (2019). Controls on the formation of turbidity current channels associated with marine-terminating glaciers and ice sheets. Marine Geology, 415, Article 105951. https://doi.org/10.1016/j.margeo.2019.05.010

Submarine channels, and the sediment density flows which form them, act as conduits for the transport of sediment, macro-nutrients, fresher water and organic matter from the coast to the deep sea. These systems are therefore significant pathways for... Read More about Controls on the formation of turbidity current channels associated with marine-terminating glaciers and ice sheets.

Lack of evidence for a substantial sea-level fluctuation within the Last Interglacial (2018)
Journal Article
Barlow, N., McClymont, E., Whitehouse, P., Stokes, C., Jamieson, S., Woodroffe, S., …Sanchez-Montes, M. (2018). Lack of evidence for a substantial sea-level fluctuation within the Last Interglacial. Nature Geoscience, 11, 627-634. https://doi.org/10.1038/s41561-018-0195-4

During the Last Interglacial, global mean sea level reached approximately 6 to 9 m above the present level. This period of high sea level may have been punctuated by a fall of more than 4 m, but a cause for such a widespread sea-level fall has been e... Read More about Lack of evidence for a substantial sea-level fluctuation within the Last Interglacial.

The relationship between ice sheets and submarine mass movements in the Nordic Seas during the Quaternary (2018)
Journal Article
Pope, E. L., Talling, P. J., & Ó Cofaigh, C. (2018). The relationship between ice sheets and submarine mass movements in the Nordic Seas during the Quaternary. Earth-Science Reviews, 178, 208-256. https://doi.org/10.1016/j.earscirev.2018.01.007

Quaternary evolution of high-latitude margins has, to a large degree been shaped by the advance and retreat of ice sheets. Our understanding of these margins and the role of ice sheets is predominantly derived from the polar North Atlantic during the... Read More about The relationship between ice sheets and submarine mass movements in the Nordic Seas during the Quaternary.

Subglacial processes on an Antarctic ice stream bed. 1: Sediment transport and bedform genesis inferred from marine geophysical data (2016)
Journal Article
Livingstone, S., Stokes, C., O Cofaigh, C., Hillenbrand, C., Vieli, A., Jamieson, S., …Dowdeswell, J. (2016). Subglacial processes on an Antarctic ice stream bed. 1: Sediment transport and bedform genesis inferred from marine geophysical data. Journal of Glaciology, 62(232), 270-284. https://doi.org/10.1017/jog.2016.18

The spatial pattern and morphometry of bedforms and their relationship to sediment thickness have been analysed in the Marguerite Bay Palaeo-ice stream Trough, western Antarctic Peninsula. Over 17 000 glacial landforms were measured from geophysical... Read More about Subglacial processes on an Antarctic ice stream bed. 1: Sediment transport and bedform genesis inferred from marine geophysical data.

Subglacial processes on an Antarctic ice stream bed. 2: Can modelled ice dynamics explain the morphology of mega-scale glacial lineations? (2016)
Journal Article
Jamieson, S., Stokes, C., Livingstone, S., Vieli, A., Ò Cofaigh, C., Hillenbrand, C., & Spagnolo, M. (2016). Subglacial processes on an Antarctic ice stream bed. 2: Can modelled ice dynamics explain the morphology of mega-scale glacial lineations?. Journal of Glaciology, 62(232), 285-298. https://doi.org/10.1017/jog.2016.19

Mega-scale glacial lineations (MSGLs) are highly elongate subglacial bedforms associated with ice streaming. However, the link between MSGLs and rapid ice flow is largely qualitative, and there have been few attempts to quantitatively link their form... Read More about Subglacial processes on an Antarctic ice stream bed. 2: Can modelled ice dynamics explain the morphology of mega-scale glacial lineations?.

Glacial history of sub-Antarctic South Georgia based on the submarine geomorphology of its fjords (2014)
Journal Article
Hodgson, D., Graham, A., Griffiths, H., Roberts, S., Ó Cofaigh, C., Bentley, M., & Evans, D. (2014). Glacial history of sub-Antarctic South Georgia based on the submarine geomorphology of its fjords. Quaternary Science Reviews, 89, 129-147. https://doi.org/10.1016/j.quascirev.2013.12.005

We present multibeam swath bathymetric surveys of the major fjords surrounding the sub-Antarctic island of South Georgia to characterise the glacial geomorphology and to identify the relative timings and extent of past glacial advance and retreat. Ba... Read More about Glacial history of sub-Antarctic South Georgia based on the submarine geomorphology of its fjords.

Understanding controls on rapid ice-stream retreat during the last deglaciation of Marguerite Bay, Antarctica, using a numerical model (2014)
Journal Article
Jamieson, S., Vieli, A., Ó Cofaigh, C., Stokes, C., Livingstone, S., & Hillenbrand, C. (2014). Understanding controls on rapid ice-stream retreat during the last deglaciation of Marguerite Bay, Antarctica, using a numerical model. Journal of Geophysical Research: Earth Surface, 119(2), 247-263. https://doi.org/10.1002/2013jf002934

Using a one-dimensional numerical model of ice-stream flow with robust grounding-line dynamics, we explore controls on paleo-ice-stream retreat in Marguerite Bay, Antarctica, during the last deglaciation. Landforms on the continental shelf constrain... Read More about Understanding controls on rapid ice-stream retreat during the last deglaciation of Marguerite Bay, Antarctica, using a numerical model.

Reconstruction of changes in the Amundsen Sea and Bellingshausen Sea sector of the West Antarctic Ice Sheet since the Last Glacial Maximum (2013)
Journal Article
Larter, R., Anderson, J., Graham, A., Gohl, K., Hillenbrand, C., Jakobsson, M., …Spiegel, C. (2014). Reconstruction of changes in the Amundsen Sea and Bellingshausen Sea sector of the West Antarctic Ice Sheet since the Last Glacial Maximum. Quaternary Science Reviews, 100, 55-86. https://doi.org/10.1016/j.quascirev.2013.10.016

Marine and terrestrial geological and marine geophysical data that constrain deglaciation since the Last Glacial Maximum (LGM) of the sector of the West Antarctic Ice Sheet (WAIS) draining into the Amundsen Sea and Bellingshausen Sea have been collat... Read More about Reconstruction of changes in the Amundsen Sea and Bellingshausen Sea sector of the West Antarctic Ice Sheet since the Last Glacial Maximum.