Sediment runoff formation in a small periglacial catchment on the King George (Vaterloo) island, Antarctica

Global climate change has most significantly affected the Polar Regions. The increase in air temperature has stimulated the melting of glaciers in the Arctic and Antarctic, which has contributed to changes in the formation of water and sediment runoff. However, there are very few quantitative estimates of the sediment redistribution in the periglacial catchments of the Polar Regions. Specific features of water and sediment runoff were studied within the catchment area of the Korabelnyj Stream located on the Fildes Peninsula in Antarctica near the Bellingshausen Ice Dome. The main aim of the study was to investigate the conditions for the formation of water and sediment runoff and to identify the proportional contribution of washout and erosion material coming from the periglacial and maritime parts of the catchment area to the sediment runoff of the stream. A set of methods and approaches, including: a) estimates of the sediment flow connectivity index; b) fingerprinting technique; c) hydrometeorological observations; d) large-scale geomorphological survey and others, was ap[1]plied to identify the conditions for the formation of surface runoff and washout, the mechanisms of sediment redistribution in various parts of the fluvial network and to quantify the proportional contribution of two main sediment sources to the sediment runoff of the stream. A fraction with a particle size of ≤63 μm was used for geochemical and spectrometric analyzes of soils and sediments. In total, the content of 34 elements was analyzed, i.e. 6 radioisotopes and 28 stable elements. It has been established that despite the significant differences in the relief of the near-glacial and maritime parts of the catchment area, the indices of sediment connectivity are quite close and amount to –1,79 and –1,35, respectively. A significant part of the material transported by temporary streams from the slopes of the catchment area is redeposited in relief depressions partially occupied by water bodies. The main volume of sediments, which is at least 60–66% of the total sediment runoff in the outlet section of the Korabelnyj Stream, comes from the periglacial part of the catchment area. This is due to the increased water discharge relative to the non-glacial part of the catchment area, which results from the melting of snow and ice accumulated on the ice dome, the high erosion of moraine deposits unprotected by vegetation, and the presence of an ice core in moraines, which prevents water filtration.

1. Abakumov E.V., Andreyev M.P. Temperaturnyj rezhim gumusovykh pochv ostrova King-Dzhorszh, Zapadnaya Antarktika [The temperature regime of humus horizons of soils of King George Island, Western Antarctica], Vestn. SanktPeterburg. un-ta, Ser. 3, 2011, no. 2, р. 129–133. (In Russian)

2. Beel C.R., Lamoureux S.F., Orwin J.F. Fluvial response to a period of hydrometeorological change and landscape disturbance in the Canadian High Arctic, Geophysical Research Letters, 2018, vol. 45, р. 10446–10455, DOI: 10.1029/2018GL079660.

3. Borselli L., Cassi P., Torri D. Prolegomena to sediment and flow connectivity in the landscape: A GIS and field numerical assessment, CATENA, 2008, vol. 75, р. 268–277, DOI: 10.1016/j.catena.2008.07.006.

4. Braun M., Simões J.C., Vogt S. et al. An improved topographic database for King George Island: compilation, application and outlook, Antarctic Science, 2001, vol. 13, no. 1, р. 41–52.

5. Cavalli M., Trevisani S., Comiti F., Marchi L. Geomorphometric assessment of spatial sediment connectivity in small Alpine catchments, Geomorphology, 2013, vol. 188, р. 31–41, DOI: 10.1016/j.geomorph.2012.05.007.

6. Chinarro D. System Engineering Applied to Fuenmayor Karst Aquifer (San Julián de Banzo, Huesca) and Colins Glacier (King George lsland, Antarctica), Doctoral Thesis accepted by the University of Zaragoza, Spain, 2014, ХХ, 161 р.

7. Collins A., Walling D.E., Leeks G.J.L. Composite fingerprinting of the spatial source of fluvial suspended sediment: a case study of the Exe and Severn River basins, United Kingdom, Géomorphologie: relief, processus, environnement, 1996, no. 2, р. 41–53.

8. Coulthard T.J., Van De Wiel M. Modelling long term basin scale sediment connectivity, driven by spatial land use changes, Geomorphology, 2017, vol. 277, р. 265–281, DOI: 10.1016/j.geomorph.2016.05.027.

9. Gaspar L., Quijano L., Lizaga I., Navas A. Effects of land use on soil organic and inorganic C and N at 137Cs traced erosional and depositional sites in mountain agroecosystems, Catena, 2019, vol. 181, 104058, DOI: 10.1016/j.catena.2019.05.004.

10. Haddadchi A., Ryder D.S., Evrard O. et al. Sediment fingerprinting in fluvial systems: review of tracers, sediment sources and mixing models, Int. J. Sediment Res., 2013, vol. 28, р. 560–578.

11. Hodgkins R., Cooper R., Wadham J. et al. Suspended sediment fluxes in a high-Arctic glacierised catchment: implications for fluvial sediment storage, Sediment Geol., 2003, vol. 162, р. 105–117.

12. Hodson A., Gurnell A., Tranter M. et al. Suspended sediment yield and transfer processes in a small high-artic glacier basin, Svalbard, Hydrol Process, 1998, vol. 12, р. 73–86.

13. Howat I., Porter C., Noh M.-J. et al. The Reference Elevation Model of Antarctica – Mosaics, Version 2, 2022, DOI: 10.7910/DVN/EBW8UC, Harvard Dataverse, V1.

14. Kavan J., Ondruch J., Nývlt D. et al. Seasonal hydrological and suspended sediment transport dynamics in proglacial streams, James Ross Island, Antarctica, Geografiska Annaler, Series A, Physical Geography, 2017, vol. 99, no. 1, р. 38–55, DOI: 10.1080/04353676.2016.1257914.

15. Koiter A.J., Owens P.N., Petticrew E.L. et al. The behavioural characteristics of sediment properties and their implications for sediment fingerprinting as an approach for identifying sediment sources in river basins, Earth Sci. Rev., 2013, vol. 125, р. 24–42.

16. Lizaga I., Latorre B., Gaspar L., Navas A. FingerPro: an R package for tracking the provenance of sediment, Water Resources Management, 2020, vol. 34, no. 12, р. 3879–3894.

17. Mokhov I.I., Parfenova M.R. Relationship of the extent of Antarctic and Arctic ice with temperature changes, 1979– 2020, Dokl. Earth Sci., 2021, vol. 496, no. 1, р. 66–71.

18. Navas A., Machín J. Spatial distribution of heavy metals and arsenic in soils of Aragón (northeast Spain): Controlling factors and environmental implications, Applied Geochemistry, 2002, vol. 17, р. 961–973.

19. Owens P.N., Blake W.H., Gaspar L. et al. Fingerprinting and tracing the sources of soils and sediments: Earth and ocean science, geoarchaeological, forensic, and human health applications, Earth Sci. Rev., 2016, vol. 162, р. 1–23, DOI: 10.1016/j.earscirev.2016.08.012.

20. Rosa K.K., Vieira R., Borges G. et al. Meltwater drainage and sediment transport in a small glaciarized basin, Wanda glacier, King George Island, Antarctica, Geociências, 2014, vol. 33, р. 181–191.

21. Smellie J.L., Pankhurst R., Thomson M. et al. The geology of the South Shetland Islands: VI. Stratigraphy, Geochemistry and Evolution. Br. Antarct. Surv. Sci. Rep., 1984, no. 87, 85 p.

22. Syvitski J.P.M. Sediment discharge variability in Arctic rivers: Implications for a warmer future, Polar Research, 2002, vol. 21, no. 2, р. 323–330. DOI: 10.3402/polar.v21i2.6494.

23. Turner J., Marshall G.J., Clem K. et al. Antarctic temperature variability and change from station data, International Journal of Climatology, 2019, vol. 40, р. 2986–3007, DOI: 10.1002/joc.6378.