Articles | Volume 18, issue 9
https://doi.org/10.5194/tc-18-4111-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-18-4111-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
12 Sep 2024
Research article |
| 12 Sep 2024
| 12 Sep 2024
Modelling subglacial fluvial sediment transport with a graph-based model, Graphical Subglacial Sediment Transport (GraphSSeT)
Alan Robert Alexander Aitken
CORRESPONDING AUTHOR
School of Earth Sciences, the University of Western Australia, Perth, Western Australia, Australia
Australian Centre for Excellence in Antarctic Science, the University of Western Australia, Perth, Western Australia, Australia
Ian Delaney
Institut des dynamiques de la surface terrestre (IDYST), Université de Lausanne, Lausanne, Switzerland
Guillaume Pirot
School of Earth Sciences, the University of Western Australia, Perth, Western Australia, Australia
Mineral Exploration Cooperative Research Centre, Centre for Exploration Targeting, School of Earth Sciences, the University of Western Australia, Perth, Australia
Mauro A. Werder
Swiss Federal Institute for Forest, Snow, and Landscape Research (WSL), Birmensdorf, Switzerland
Laboratory of Hydraulics, Hydrology, and Glaciology (VAW), ETH Zurich, Zurich, Switzerland
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Cited articles
Aitken, A.: GraphSSeT – SHMIP repository, Zenodo [code and data set], https://doi.org/10.5281/zenodo.12570097, 2024. a
Aitken, A. R. A. and Urosevic, L.: A probabilistic and model-based approach to the assessment of glacial detritus from ice sheet change, Palaeogeog. Palaeocl., 561, 110053, https://doi.org/10.1016/j.palaeo.2020.110053, 2021. a, b
Alley, R. B.: Water-Pressure Coupling of Sliding and Bed Deformation: I. Water System, J. Glaciol., 35, 108–118, https://doi.org/10.3189/002214389793701527, 1989. a
Alley, R. B., Anandakrishnan, S., Bentley, C. R., and Lord, N.: A water-piracy hypothesis for the stagnation of Ice Stream C, Antarctica, Ann. Glaciol., 20, 187–194, https://doi.org/10.3189/1994AoG20-1-187-194, 1994. a
Alley, R. B., Lawson, D. E., Evenson, E. B., Strasser, J. C., and Larson, G. J.: Glaciohydraulic supercooling: a freeze-on mechanism to create stratified, debris-rich basal ice: II. Theory, J. Glaciol., 44, 563–569, https://doi.org/10.3189/S0022143000002070, 1998. a
Alley, R. B., Cuffey, K. M., and Zoet, L. K.: Glacial erosion: status and outlook, Ann. Glaciol., 60, 1–13, https://doi.org/10.1017/aog.2019.38, 2019. a
Ancey, C.: Bedload transport: a walk between randomness and determinism. Part 2. Challenges and prospects, J. Hydraul. Res., 58, 18–33, https://doi.org/10.1080/00221686.2019.1702595, 2020a. a
Ancey, C.: Bedload transport: a walk between randomness and determinism. Part 1. The state of the art, J. Hydraul. Res., 58, 1–17, https://doi.org/10.1080/00221686.2019.1702594, 2020b. a
Andresen, C. S., Karlsson, N. B., Straneo, F., Schmidt, S., Andersen, T. J., Eidam, E. F., Bjørk, A. A., Dartiguemalle, N., Dyke, L. M., Vermassen, F., and Gundel, I. E.: Sediment discharge from Greenland’s marine-terminating glaciers is linked with surface melt, Nat. Commun., 15, 1332, https://doi.org/10.1038/s41467-024-45694-1, 2024. a, b
Ashmore, D. W. and Bingham, R. G.: Antarctic subglacial hydrology: current knowledge and future challenges, Antarct. Sci., 26, 758–773, https://doi.org/10.1017/S0954102014000546, 2014. a, b
Boulton, G. S., Lunn, R., Vidstrand, P., and Zatsepin, S.: Subglacial drainage by groundwater–channel coupling, and the origin of esker systems: part II – theory and simulation of a modern system, Quaternary Sci. Rev., 26, 1091–1105, https://doi.org/10.1016/j.quascirev.2007.01.006, 2007. a
Brandes, U.: A faster algorithm for betweenness centrality, J. Math. Sociol., 25, 163–177, https://doi.org/10.1080/0022250X.2001.9990249, 2001. a
Cape, M. R., Straneo, F., Beaird, N., Bundy, R. M., and Charette, M. A.: Nutrient release to oceans from buoyancy-driven upwelling at Greenland tidewater glaciers, Nat. Geosci., 12, 34–39, https://doi.org/10.1038/s41561-018-0268-4, 2019. a
Christoffersen, P., Tulaczyk, S., and Behar, A.: Basal ice sequences in Antarctic ice stream: Exposure of past hydrologic conditions and a principal mode of sediment transfer, J. Geophys. Res.-Earth, 115, F03034, https://doi.org/10.1029/2009JF001430, 2010. a, b
Chu, V. W.: Greenland ice sheet hydrology: A review, Prog. Phys. Geog., 38, 19–54, https://doi.org/10.1177/0309133313507075, 2014. a
Chu, V. W., Smith, L. C., Rennermalm, A. K., Forster, R. R., Box, J. E., and Reeh, N.: Sediment plume response to surface melting and supraglacial lake drainages on the Greenland ice sheet, J. Glaciol., 55, 1072–1082, https://doi.org/10.3189/002214309790794904, 2009. a, b
Cook, S. J., Swift, D. A., Kirkbride, M. P., Knight, P. G., and Waller, R. I.: The empirical basis for modelling glacial erosion rates, Nat. Commun., 11, 759, https://doi.org/10.1038/s41467-020-14583-8, 2020. a
Creyts, T. T. and Schoof, C. G.: Drainage through subglacial water sheets, J. Geophys. Res.-Earth, 114, F04008, https://doi.org/10.1029/2008JF001215, 2009. a
Creyts, T. T., Clarke, G. K. C., and Church, M.: Evolution of subglacial overdeepenings in response to sediment redistribution and glaciohydraulic supercooling, J. Geophys. Res.-Earth, 118, 423–446, https://doi.org/10.1002/jgrf.20033, 2013. a
Czuba, J. A.: A Lagrangian framework for exploring complexities of mixed-size sediment transport in gravel-bedded river networks, Geomorphology, 321, 146–152, https://doi.org/10.1016/j.geomorph.2018.08.031, 2018. a
De Fleurian, B., Werder, M. A., Beyer, S., Brinkerhoff, D. J., Delaney, I. A. N., Dow, C. F., Downs, J., Gagliardini, O., Hoffman, M. J., and Hooke, R. L.: SHMIP The subglacial hydrology model intercomparison Project, J. Glaciol., 64, 897–916, https://doi.org/10.1017/jog.2018.78, 2018. a, b, c, d, e, f, g
Delaney, I. and Adhikari, S.: Increased Subglacial Sediment Discharge in a Warming Climate: Consideration of Ice Dynamics, Glacial Erosion, and Fluvial Sediment Transport, Geophys. Res. Lett., 47, e2019GL085672, https://doi.org/10.1029/2019GL085672, 2020. a, b, c, d
Delaney, I., Anderson, L., and Herman, F.: Modeling the spatially distributed nature of subglacial sediment transport and erosion, Earth Surf. Dynam., 11, 663–680, https://doi.org/10.5194/esurf-11-663-2023, 2023. a, b
Dow, C. F.: The role of subglacial hydrology in Antarctic ice sheet dynamics and stability: a modelling perspective, Ann. Glaciol., 63, 49–54, https://doi.org/10.1017/aog.2023.9, 2022. a
Dow, C. F., Ross, N., Jeofry, H., Siu, K., and Siegert, M. J.: Antarctic basal environment shaped by high-pressure flow through a subglacial river system, Nat. Geosci., 15, 892–898, https://doi.org/10.1038/s41561-022-01059-1, 2022. a
Dowdeswell, J. A., Hogan, K. A., Arnold, N. S., Mugford, R. I., Wells, M., Hirst, J. P. P., and Decalf, C.: Sediment-rich meltwater plumes and ice-proximal fans at the margins of modern and ancient tidewater glaciers: Observations and modelling, Sedimentology, 62, 1665–1692, https://doi.org/10.1111/sed.12198, 2015. a
Dowdeswell, J. A., Canals, M., Jakobsson, M., Todd, B. J., Dowdeswell, E. K., and Hogan, K. A.: The variety and distribution of submarine glacial landforms and implications for ice-sheet reconstruction, Geological Society, London, Memoirs, 46, 519–552, https://doi.org/10.1144/M46.183, 2016. a
Ehrenfeucht, S., Morlighem, M., Rignot, E., Dow, C. F., and Mouginot, J.: Seasonal Acceleration of Petermann Glacier, Greenland, From Changes in Subglacial Hydrology, Geophys. Res. Lett., 50, e2022GL098009, https://doi.org/10.1029/2022GL098009, 2023. a
Einstein, H. A.: The Bed-Load Function for Sediment Transportation in Open Channel Flow, United States Department of Agriculture, Washington, D.C., Technical Bulletin No. 1026, 25 pp., 1950. a
Evans, D. J. A., Phillips, E. R., Hiemstra, J. F., and Auton, C. A.: Subglacial till: Formation, sedimentary characteristics and classification, Earth-Sci. Rev., 78, 115–176, https://doi.org/10.1016/j.earscirev.2006.04.001, 2006. a, b, c
Flowers, G. E.: Modelling water flow under glaciers and ice sheets, P. the Roy. Soc. A-Math. Phy., 471, 20140907, https://doi.org/10.1098/rspa.2014.0907, 2015. a
Flowers, G. E. and Clarke, G. K. C.: A multicomponent coupled model of glacier hydrology 1. Theory and synthetic examples, J. Geophys. Res.-Sol. Ea., 107, ECV 9-1–ECV 9-17, https://doi.org/10.1029/2001JB001122, 2002. a
Flowers, G. E., Björnsson, H., Pálsson, F., and Clarke, G. K. C.: A coupled sheet-conduit mechanism for jökulhlaup propagation, Geophys. Res. Lett., 31, L05401, https://doi.org/10.1029/2003GL019088, 2004. a, b
Fountain, A. G., Jacobel, R. W., Schlichting, R., and Jansson, P.: Fractures as the main pathways of water flow in temperate glaciers, Nature, 433, 618–621, https://doi.org/10.1038/nature03296, 2005. a
Golledge, N. R. and Levy, R. H.: Geometry and dynamics of an East Antarctic Ice Sheet outlet glacier, under past and present climates, J. Geophys. Res.-Earth, 116, F03025, https://doi.org/10.1029/2011JF002028, 2011. a, b
Gulley, J. D., Grabiec, M., Martin, J. B., Jania, J., Catania, G., and Glowacki, P.: The effect of discrete recharge by moulins and heterogeneity in flow-path efficiency at glacier beds on subglacial hydrology, J. Glaciol., 58, 926–940, https://doi.org/10.3189/2012JoG11J189, 2012. a
Hagberg, A., Swart, P. J., and Schult, D. A.: Exploring network structure, dynamics, and function using NetworkX, in: SciPy2008: 7th Annual Python in Science Conference, Pasadena, CA, USA, 19–24 August 2009, http://conference.scipy.org.s3-website-us-east-1.amazonaws.com/proceedings/scipy2008/SciPy2008_proceedings.pdf (last access: 28 August 2024), 2008. a
Haldorsen, S.: Grain-size distribution of subglacial till and its realtion to glacial scrushing and abrasion, Boreas, 10, 91–105, https://doi.org/10.1111/j.1502-3885.1981.tb00472.x, 1981. a, b, c, d
Herman, F., Braun, J., Deal, E., and Prasicek, G.: The Response Time of Glacial Erosion, J. Geophys. Res.-Earth, 123, 801–817, https://doi.org/10.1002/2017JF004586, 2018. a, b, c, d
Herman, F., De Doncker, F., Delaney, I., Prasicek, G., and Koppes, M.: The impact of glaciers on mountain erosion, Nature Reviews Earth & Environment, 2, 422–435, https://doi.org/10.1038/s43017-021-00165-9, 2021. a
Hiester, J., Sergienko, O. V., and Hulbe, C. L.: Topographically mediated ice stream subglacial drainage networks, J. Geophys. Res.-Earth, 121, 497–510, https://doi.org/10.1002/2015JF003660, 2016. a
Hogan, K. A., Dix, J. K., Lloyd, J. M., Long, A. J., and Cotterill, C. J.: Seismic stratigraphy records the deglacial history of Jakobshavn Isbræ, West Greenland, J. Quaternary Sci., 26, 757–766, https://doi.org/10.1002/jqs.1500, 2011. a, b
Hogan, K. A., Dowdeswell, J. A., and Ó Cofaigh, C.: Glacimarine sedimentary processes and depositional environments in an embayment fed by West Greenland ice streams, Mar. Geol., 311, 1–16, https://doi.org/10.1016/j.margeo.2012.04.006, 2012. a, b
Hogan, K. A., Jakobsson, M., Mayer, L., Reilly, B. T., Jennings, A. E., Stoner, J. S., Nielsen, T., Andresen, K. J., Nørmark, E., Heirman, K. A., Kamla, E., Jerram, K., Stranne, C., and Mix, A.: Glacial sedimentation, fluxes and erosion rates associated with ice retreat in Petermann Fjord and Nares Strait, north-west Greenland, The Cryosphere, 14, 261–286, https://doi.org/10.5194/tc-14-261-2020, 2020. a
Hooke, R. L., Laumann, T., and Kohler, J.: Subglacial Water Pressures and the Shape of Subglacial Conduits, J. Glaciol., 36, 67–71, https://doi.org/10.3189/S0022143000005566, 1990. a, b
Hooyer, T. S., Cohen, D., and Iverson, N. R.: Control of glacial quarrying by bedrock joints, Geomorphology, 153–154, 91–101, https://doi.org/10.1016/j.geomorph.2012.02.012, 2012. a
Kamb, B.: Glacier surge mechanism based on linked cavity configuration of the basal water conduit system, J. Geophys. Res.-Sol. Ea., 92, 9083–9100, https://doi.org/10.1029/JB092iB09p09083, 1987. a
Klösch, M. and Habersack, H.: Deriving formulas for an unsteady virtual velocity of bedload tracers, Earth Surf. Proc. Land., 43, 1529–1541, https://doi.org/10.1002/esp.4326, 2018. a, b, c
Krabbendam, M. and Glasser, N. F.: Glacial erosion and bedrock properties in NW Scotland: Abrasion and plucking, hardness and joint spacing, Geomorphology, 130, 374–383, https://doi.org/10.1016/j.geomorph.2011.04.022, 2011. a
Le Brocq, A. M., Payne, A. J., Siegert, M. J., and Alley, R. B.: A subglacial water-flow model for West Antarctica, J. Glaciol., 55, 879–888, https://doi.org/10.3189/002214309790152564, 2009. a
Lepp, A. P., Simkins, L. M., Anderson, J. B., Clark, R. W., Wellner, J. S., Hillenbrand, C.-D., Smith, J. A., Lehrmann, A. A., Totten, R., Larter, R. D., Hogan, K. A., Nitsche, F. O., Graham, A. G. C., and Wacker, L.: Sedimentary Signatures of Persistent Subglacial Meltwater Drainage From Thwaites Glacier, Antarctica, Front. Earth Sci., 10, 863200, https://doi.org/10.3389/feart.2022.863200, 2022. a
Licht, K. J. and Hemming, S. R.: Analysis of Antarctic glacigenic sediment provenance through geochemical and petrologic applications, Quaternary Sci. Rev., 164, 1–24, https://doi.org/10.1016/j.quascirev.2017.03.009, 2017. a, b
Livingstone, S. J., Li, Y., Rutishauser, A., Sanderson, R. J., Winter, K., Mikucki, J. A., Björnsson, H., Bowling, J. S., Chu, W., Dow, C. F., Fricker, H. A., McMillan, M., Ng, F. S. L., Ross, N., Siegert, M. J., Siegfried, M., and Sole, A. J.: Subglacial lakes and their changing role in a warming climate, Nature Reviews Earth & Environment, 3, 106–124, https://doi.org/10.1038/s43017-021-00246-9, 2022. a
McCormack, F. S., Roberts, J. L., Kulessa, B., Aitken, A., Dow, C. F., Bird, L., Galton-Fenzi, B. K., Hochmuth, K., Jones, R. S., Mackintosh, A. N., and McArthur, K.: Assessing the potential for ice flow piracy between the Totten and Vanderford glaciers, East Antarctica, The Cryosphere, 17, 4549–4569, https://doi.org/10.5194/tc-17-4549-2023, 2023. a
Meire, L., Mortensen, J., Meire, P., Juul‐Pedersen, T., Sejr, M. K., Rysgaard, S., Nygaard, R., Huybrechts, P., and Meysman, F. J. R.: Marine‐terminating glaciers sustain high productivity in Greenland fjords, Glob. Change Biol., 23, 5344–5357, https://doi.org/10.1111/gcb.13801, 2017. a
Meyer-Peter, E. and Müller, R.: Formulas for Bed-Load transport, in: IAHSR 2nd meeting, Stockholm, Appendix 2, IAHR, Stockholm, Sweden, 7–9 June 1948, https://repository.tudelft.nl/islandora/object/uuid:4fda9b61-be28-4703-ab06-43cdc2a21bd7 (last access: 28 August 2024), 1948. a
Newell, G. F.: A simplified theory of kinematic waves in highway traffic, part I: General theory, T. Res. B-Meth., 27, 281–287, https://doi.org/10.1016/0191-2615(93)90038-C, 1993. a
Nye, J. F.: Water Flow in Glaciers: Jökulhlaups, Tunnels and Veins, J. Glaciol., 17, 181–207, https://doi.org/10.3189/S002214300001354X, 1976. a
Overeem, I., Hudson, B. D., Syvitski, J. P. M., Mikkelsen, A. B., Hasholt, B., van den Broeke, M. R., Noël, B. P. Y., and Morlighem, M.: Substantial export of suspended sediment to the global oceans from glacial erosion in Greenland, Nat. Geosci., 10, 859–863, https://doi.org/10.1038/ngeo3046, 2017. a, b, c
Peterson, G., Johnson, M. D., Dahlgren, S., Påsse, T., and Alexanderson, H.: Genesis of hummocks found in tunnel valleys: an example from Hörda, southern Sweden, GFF, 140, 189–201, https://doi.org/10.1080/11035897.2018.1470199, 2018. a, b, c
Pollard, D. and DeConto, R. M.: Antarctic ice and sediment flux in the Oligocene simulated by a climate–ice sheet–sediment model, Palaeogeogr. Palaeocl., 198, 53–67, https://doi.org/10.1016/S0031-0182(03)00394-8, 2003. a, b, c
Pollard, D. and DeConto, R. M.: Continuous simulations over the last 40 million years with a coupled Antarctic ice sheet-sediment model, Palaeogeogr. Palaeocl., 537, 109374, https://doi.org/10.1016/j.palaeo.2019.109374, 2020. a
Roberts, M. J.: Jökulhlaups: A reassessment of floodwater flow through glaciers, Rev. Geophys., 43, RG1002, https://doi.org/10.1029/2003RG000147, 2005. a
Röthlisberger, H.: Water Pressure in Intra- and Subglacial Channels, J. Glaciol., 11, 177–203, https://doi.org/10.3189/S0022143000022188, 1972. a, b
Schild, K. M., Hawley, R. L., Chipman, J. W., and Benn, D. I.: Quantifying suspended sediment concentration in subglacial sediment plumes discharging from two Svalbard tidewater glaciers using Landsat-8 and in situ measurements, Int. J. Remote Sens., 38, 6865–6881, https://doi.org/10.1080/01431161.2017.1365388, 2017. a, b
Schoof, C.: Ice-sheet acceleration driven by melt supply variability, Nature, 468, 803–806, https://doi.org/10.1038/nature09618, 2010. a
Shreve, R. L.: Movement of Water in Glaciers, J. Glaciol., 11, 205–214, https://doi.org/10.3189/S002214300002219X, 1972. a, b
Smith, J. A., Graham, A. G. C., Post, A. L., Hillenbrand, C.-D., Bart, P. J., and Powell, R. D.: The marine geological imprint of Antarctic ice shelves, Nat. Commun., 10, 5635, https://doi.org/10.1038/s41467-019-13496-5, 2019. a
van Rijn, L. C.: Unified View of Sediment Transport by Currents and Waves. II: Suspended Transport, J. Hydraul. Eng., 133, 668–689, https://doi.org/10.1061/(ASCE)0733-9429(2007)133:6(668), 2007a. a
van Rijn, L. C.: Unified View of Sediment Transport by Currents and Waves. I: Initiation of Motion, Bed Roughness, and Bed-Load Transport, J. Hydraul. Eng., 133, 649–667, https://doi.org/10.1061/(ASCE)0733-9429(2007)133:6(649), 2007b. a
Vaughan, D. G., Corr, H. F. J., Smith, A. M., Pritchard, H. D., and Shepherd, A.: Flow-switching and water piracy between Rutford Ice Stream and Carlson Inlet, West Antarctica, J. Glaciol., 54, 41–48, https://doi.org/10.3189/002214308784409125, 2008. a
Wadham, J. L., De'Ath, R., Monteiro, F. M., Tranter, M., Ridgwell, A., Raiswell, R., and Tulaczyk, S.: The potential role of the Antarctic Ice Sheet in global biogeochemical cycles, Earth Env. Sci. T. R. So., 104, 55–67, https://doi.org/10.1017/S1755691013000108, 2013. a
Walder, J. S. and Fowler, A.: Channelized subglacial drainage over a deformable bed, J. Glaciol., 40, 3–15, https://doi.org/10.3189/S0022143000003750, 1994. a
Wilkinson, S. N., Prosser, I. P., and Hughes, A. O.: Predicting the distribution of bed material accumulation using river network sediment budgets, Water Resour. Res., 42, W10419, https://doi.org/10.1029/2006WR004958, 2006. a
Witus, A. E., Branecky, C. M., Anderson, J. B., Szczuciński, W., Schroeder, D. M., Blankenship, D. D., and Jakobsson, M.: Meltwater intensive glacial retreat in polar environments and investigation of associated sediments: example from Pine Island Bay, West Antarctica, Quaternary Sci. Rev., 85, 99–118, https://doi.org/10.1016/j.quascirev.2013.11.021, 2014. a
Short summary
Understanding how glaciers generate sediment and transport it to the ocean is important for understanding ocean ecosystems and developing knowledge of the past cryosphere from marine sediments. This paper presents a new way to simulate sediment transport in rivers below ice sheets and glaciers and quantify volumes and characteristics of sediment that can be used to reveal the hidden record of the subglacial environment for both past and present glacial conditions.
Understanding how glaciers generate sediment and transport it to the ocean is important for...
