Proglacial landscape evolution across the Antarctic Peninsula in a warming climate
Project Summary
The ice sheet margin around the Antarctic Peninsula receded rapidly from its Last Glacial Maximum (LGM) position on the continental shelf edge ~ 18 ka (Davies et al., 2012) to a position towards the head of fjords, and in some cases onto land. These former outlet glacier margins are sometimes marked by prominent (tens of km long) lateral moraine ridges along the major fjords. Coincidentally, sea level changes and isostasy created raised beaches, multiple shorelines and perched deltas (e.g. Fretwell et al., 2010). However, the rates and primary drivers of landscape evolution in NE Antarctic Peninsula in response to natural climate change are otherwise little known and are contentious, due in part to a lack of in situ observations, to sediment accumulations often being below sea level, the variety of glaciation styles and complex paraglacial adjustments during and after the deglaciation.
The Pleistocene–Holocene transition along the northern tip of Antarctic Peninsula is connected with a significant and rapid climate warming between 13 and 12 ka BP and predominant early Holocene hypsythermal conditions continuing until 9.5 ka BP (Mulvaney et al., 2012) resulting in consequent ice shelf collapse and glacier speed up (e.g. Bentley et al., 2005; Wallis et al., 2023; Roman et al. 2024). A number of late-Holocene advances have been proposed from a handful of sites (Hjort et al., 1997; Bentley et al., 2009; Carrivick et al., 2012; Kaplan et al., 2020), but the evidence for a Little Ice Age across the Antarctic Peninsula is debated (Mulvaney et al., 2012; Simms et al., 2021).
The opportunity to examine the composition, functioning and evolution of the ice-free proglacial parts of the Antarctic Peninsula is potentially extremely valuable, to yield new insights into the extent to which glaciers and their associated processes have shaped the landscape. These systems deliver vast volumes of meltwater and sediment to the bays and fjords of the Antarctic Peninsula (Griffith and Anderson, 1989; Kavan et al., 2017, 2023, Kavan, 2022) and ultimately to the Southern Ocean. These water and sediment fluxes (Stringer et al., 2024) are controlled by glacier fluctuations (e.g. Silva et al., 2020) and in turn strongly influence mineral exports (e.g. Bown et al., 2018) and primary production and hence food webs in the Southern Ocean (e.g. Wefer and Fischer, 1991; Friedlander et al., 2020; Gonçalves et al., 2022).
This project aims to assess landscape evolution across the Antarctic Peninsula during the Holocene by using a novel combination of high-resolution 3D geospatial analysis; most likely including datasets such as the recently released REMA DEM and Planet imagery, and field surveys of geomorphology, sedimentology and with geochronological ambitions. It will develop the methods and analysis of Carrivick et al. (2018) as applied to the proglacial areas of the central European Alps. Field surveys will be based on the Ulu Peninsula of James Ross Island, the second largest ice free area in the whole of Antarctica Peninsula, with the support and logistics of the Czech Antarctic Research Programme and the Czech J.G.Mendel Antarctic Station. The present day glaciological status will be measured using satellite observations of ice speed, calving front location and height change. Combining these skills and approaches will permit local process-based interpretations and a regional picture to be assembled of Holocene landscape development across the Antarctica Peninsula. Questions concerning sediment fluxes from glaciated versus deglaciated catchments, geomorphological structure-composition (landsystems), geomorphological functioning (e.g. connectivity) and terrestrial-fjord linkages will be addressed.
This project aims to assess landscape evolution across the Antarctic Peninsula during the Holocene by using a novel combination of high-resolution 3D geospatial analysis and field surveys of geomorphology, sedimentology and with geochronological ambitions. Field surveys will be based on the Ulu Peninsula of James Ross Island, the second largest ice free area in the whole of Antarctica Peninsula, with the support and logistics of the Czech Antarctic Research Programme and the Czech J.G.Mendel Antarctic Station. The present day glaciological status will be measured using satellite observations of ice speed, calving front location and height change. Combining these skills and approaches will permit local process-based interpretations and a regional picture to be assembled of Holocene landscape development across the Antarctica Peninsula. Questions concerning sediment fluxes from glaciated versus deglaciated catchments, geomorphological structure-composition (landsystems), geomorphological functioning (e.g. connectivity) and terrestrial-fjord linkages will be addressed.
Funding Notes
This project is offered as part of the YES-DTN (View Website). YES-DTN offers 25 – 26 fully funded studentships each year, covering university fees, a personal stipend, and research and training costs. International applicants will need to cover any costs related to applying for a student visa and the international health surcharge (IHS). Applications are open to UK and international applicants, although the number of awards for international applicants is limited by UKRI rules. More information is available on the YES•DTN website: https://yes-dtn.ac.uk/applicationinformation/
References
Bentley, M.J., Hodgson, D.A., Sugden, D.E., Roberts, S.J., Smith, J.A., Leng, M.J. and Bryant, C., 2005. Early Holocene retreat of the George VI ice shelf, Antarctic Peninsula. Geology, 33(3), pp.173-176.
Bentley, M.J., Hodgson, D.A., Smith, J.A., Cofaigh, C.O., Domack, E.W., Larter, R.D., Roberts, S.J., Brachfeld, S., Leventer, A., Hjort, C. and Hillenbrand, C.D., 2009. Mechanisms of Holocene palaeoenvironmental change in the Antarctic Peninsula region. The Holocene, 19(1), pp.51-69.
Bown, J., van Haren, H., Meredith, M.P., Venables, H.J., Laan, P., Brearley, J.A. and de Baar, H.J., 2018. Evidences of strong sources of DFe and DMn in Ryder Bay, Western Antarctic Peninsula. Phil. Trans. R. Soc. A, 376(2122), p.20170172.
Carrivick, J.L., Davies, B.J., Glasser, N.F., Nývlt, D. and Hambrey, M.J., 2012. Late-Holocene changes in character and behaviour of land-terminating glaciers on James Ross Island, Antarctica. Journal of Glaciology, 58(212), pp.1176-1190.
Carrivick, J.L., Heckmann, T., Turner, A. and Fischer, M., 2018. An assessment of landform composition and functioning with the first proglacial systems dataset of the central European Alps. Geomorphology.
Davies, B.J., Hambrey, M.J., Smellie, J.L., Carrivick, J.L. and Glasser, N.F., 2012. Antarctic Peninsula ice sheet evolution during the Cenozoic Era. Quaternary Science Reviews, 31, pp.30-66.
Fretwell, P.T., Hodgson, D.A., Watcham, E.P., Bentley, M.J. and Roberts, S.J., 2010. Holocene isostatic uplift of the South Shetland Islands, Antarctic Peninsula, modelled from raised beaches. Quaternary Science Reviews, 29(15-16), pp.1880-1893.
Friedlander, A.M., Goodell, W., Salinas-de-León, P., Ballesteros, E., Berkenpas, E., Capurro, A.P., Cárdenas, C.A., Hüne, M., Lagger, C., Landaeta, M.F. and Muñoz, A., 2020. Spatial patterns of continental shelf faunal community structure along the Western Antarctic Peninsula. PLoS One, 15(10), p.e0239895.
Griffith, T.W. and Anderson, J.B., 1989. Climatic control of sedimentation in bays and fjords of the northern Antarctic Peninsula. Marine Geology, 85(2-4), pp.181-204.
Gonçalves, V.N., de Souza, L.M.D., Lirio, J.M., Coria, S.H., Lopes, F.A.C., Convey, P., Carvalho-Silva, M., de Oliveira, F.S., Câmara, P.E.A.S. and Rosa, L.H., 2022. Diversity and ecology of fungal assemblages present in lake sediments at Clearwater Mesa, James Ross Island, Antarctica, assessed using metabarcoding of environmental DNA. Fungal Biology, 126(10), pp.640-647.
Hjort, C., Ingólfsson, Ó., Möller, P. and Lirio, J.M., 1997. Holocene glacial history and sea-level changes on James Ross Island, Antarctic Peninsula. Journal of Quaternary Science, 12, pp. 259-273.
Kaplan, M.R., Strelin, J.A., Schaefer, J.M., Peltier, C., Martini, M.A., Flores, E., Winckler, G. and Schwartz, R., 2020. Holocene glacier behavior around the northern Antarctic Peninsula and possible causes. Earth and Planetary Science Letters, 534, p.116077.
Kavan, J., 2022. Fluvial transport in the deglaciated Antarctic catchment–Bohemian Stream, James Ross Island. Geografiska Annaler: Series A, Physical Geography, 104(1), pp.1-10.
Kavan, J., Ondruch, J., Nývlt, D., Hrbáček, F., Carrivick, J.L. and Láska, K., 2017. Seasonal hydrological and suspended sediment transport dynamics in proglacial streams, James Ross Island, Antarctica. Geografiska Annaler, A 97(1), pp. 38-55.
Kavan, J., Hrbáček, F. and Stringer, C.D., 2023. Proglacial streams runoff dynamics in Devil´ s Bay, Vega Island, Antarctica. Hydrological Sciences Journal, 68(7), pp.967-981.
Mulvaney, R., Abram, N.J., Hindmarsh, R.C., Arrowsmith, C., Fleet, L., Triest, J., Sime, L.C., Alemany, O. and Foord, S., 2012. Recent Antarctic Peninsula warming relative to Holocene climate and ice-shelf history. Nature, 489(7414), p.141.
Roman, M., Nývlt, D., Davies, B.J., Braucher, R., Jennings, S.J.A., Břežný, M., Glasser, N.F., Hambrey, M.J., Lirio, J.M., Rodés, Á., ASTER Team, 2024. Accelerated retreat of northern James Ross Island ice streams (Antarctic Peninsula) in the Early-Middle Holocene induced by buoyancy response to postglacial sea level rise. Earth and Planetary Science Letters, 641, p. 118803.
Silva, A.B., Arigony-Neto, J., Braun, M.H., Espinoza, J.M.A., Costi, J. and Jaña, R., 2020. Spatial and temporal analysis of changes in the glaciers of the Antarctic Peninsula. Global and Planetary Change, 184, p.103079.
Simms, A.R., Bentley, M.J., Simkins, L.M., Zurbuchen, J., Reynolds, L.C., DeWitt, R. and Thomas, E.R., 2021. Evidence for a “Little Ice Age” glacial advance within the Antarctic Peninsula–Examples from glacially-overrun raised beaches. Quaternary Science Reviews, 271, p.107195.
Stringer, C.D., Boyle, J.F., Hrbáček, F., Láska, K., Nedělčev, O., Kavan, J., Kňažková, M., Carrivick, J.L., Quincey, D.J. and Nývlt, D., 2024. Quantifying sediment sources, pathways, and controls on fluvial transport dynamics on James Ross Island, Antarctica. Journal of Hydrology, 635, p.131157.
Wallis, B.J., Hogg, A.E., van Wessem, J.M., Davison, B.J. and van den Broeke, M.R., 2023. Widespread seasonal speed-up of west Antarctic Peninsula glaciers from 2014 to 2021. Nature Geoscience, 16(3), pp.231-237.
Wefer, G. and Fischer, G., 1991. Annual primary production and export flux in the Southern Ocean from sediment trap data. Marine Chemistry, 35(1), pp.597-613.