Skip to main content
×
×
Home

Eurasian ice-sheet dynamics and sensitivity to subglacial hydrology

  • EYTHOR GUDLAUGSSON (a1), ANGELIKA HUMBERT (a2) (a3), KARIN ANDREASSEN (a1), CAROLINE C. CLASON (a4), THOMAS KLEINER (a2) and SEBASTIAN BEYER (a2)...
Abstract

Ice-stream dynamics are strongly controlled by processes taking place at the ice/bed interface where subglacial water both lubricates the base and saturates any existing, underlying sediment. Large parts of the former Eurasian ice sheet were underlain by thick sequences of soft, marine sediments and many areas are imprinted with geomorphological features indicative of fast flow and wet basal conditions. Here, we study the effect of subglacial water on past Eurasian ice-sheet dynamics by incorporating a thin-film model of basal water flow into the ice-sheet model SICOPOLIS and use it to better represent flow in temperate areas. The adjunction of subglacial hydrology results in a smaller ice-sheet building up over time and generally faster ice velocities, which consequently reduces the total area fraction of temperate basal ice and ice streaming areas. Minima in the hydraulic pressure potential, governing water flow, are used as indicators for potential locations of past subglacial lakes and a probability distribution of lake existence is presented based on estimated lake depth and longevity.

  • View HTML
    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Eurasian ice-sheet dynamics and sensitivity to subglacial hydrology
      Available formats
      ×
      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Eurasian ice-sheet dynamics and sensitivity to subglacial hydrology
      Available formats
      ×
      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Eurasian ice-sheet dynamics and sensitivity to subglacial hydrology
      Available formats
      ×
Copyright
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Corresponding author
Correspondence: Eythor Gudlaugsson <eythor.gudlaugsson@gmail.com>
References
Hide All
Andersen, KK and 9 others (2006) The Greenland ice core chronology 2005, 15–42 ka. Part 1: constructing the time scale. Quat. Sci. Rev., 25(23), 32463257
Anderson, JB, Shipp, SS, Lowe, AL, Wellner, JS and Mosola, AB (2002) The Antarctic Ice Sheet during the Last Glacial Maximum and its subsequent retreat history: a review. Quat. Sci. Rev., 21(1), 4970
Andreassen, K and Winsborrow, M (2009) Signature of ice streaming in Bjornoyrenna, Polar North Atlantic, through the Pleistocene and implications for ice-stream dynamics. Ann. Glaciol., 50(52), 1726
Andrews, LC and 7 others (2014) Direct observations of evolving subglacial drainage beneath the Greenland Ice Sheet. Nature, 514(7520), 8083
Bamber, JL, Vaughan, DG and Joughin, I (2000) Widespread complex flow in the interior of the Antarctic ice sheet. Science, 287(5456), 12481250
Baral, DR, Hutter, K and Greve, R (2001) Asymptotic theories of large-scale motion, temperature, and moisture distribution in land-based polythermal ice sheets: a critical review and new developments. Appl. Mech. Rev., 54(3), 215256
Barker, S and 7 others (2011) 800,000 years of abrupt climate variability. Science, 334(6054), 347351
Bjarnadóttir, LR, Winsborrow, M and Andreassen, K (2014) Deglaciation of the central Barents Sea. Quat. Sci. Rev., 92, 208226
Budd, W and Warner, R (1996) A computer scheme for rapid calculations of balance-flux distributions. In International Symposium on Ice Sheet Modelling, vol. 23, 2127
Clason, CC, Applegate, P and Holmlund, P (2014) Modelling Late Weichselian evolution of the Eurasian ice sheets forced by surface meltwater-enhanced basal sliding. J. Glaciol., 60(219), 2940
Dee, D and 9 others (2011) The ERA-Interim reanalysis: configuration and performance of the data assimilation system. Quart. J. R. Meteorol. Soc., 137(656), 553597
Duval, P (1977) The role of the water content on the creep rate of polycrystalline ice. IAHS Publ, 118, 2933
Duval, P and Lliboutry, L (1985) Superplasticity owing to grain growth in polar ices. J. Glaciol., 31(107), 6062
Evans, J, Dowdeswell, JA, Ó Cofaigh, C, Benham, TJ and Anderson, JB (2006) Extent and dynamics of the West Antarctic Ice Sheet on the outer continental shelf of Pine Island Bay during the last glaciation. Marine Geol., 230(1), 5372
Forsström, PL and Greve, R (2004) Simulation of the Eurasian ice sheet dynamics during the last glaciation. Global Planet. Change, 42(1), 5981
Fricker, H, Scambos, T, Bindschadler, R and Padman, L (2007) An active subglacial water system in West Antarctica mapped from space. Science, 315(5818), 15441548
Glen, J (1955) The creep of polycrystalline ice. Proc. R. Soc. London Ser. A Math. Phys. Sci., 228(1175), 519538
Gray, L and 5 others (2005) Evidence for subglacial water transport in the West Antarctic Ice Sheet through three-dimensional satellite radar interferometry. Geophys. Res. Lett., 32(3), l03501 (doi: 10.1029/2004GL021387)
Greve, R (1997) Application of a polythermal three-dimensional ice sheet model to the Greenland ice sheet: response to steady-state and transient climate scenarios. J. Clim., 10(5), 901918
Greve, R and Blatter, H (2009) Dynamics of ice sheets and glaciers. Springer-Verlag, Berlin, Heidelberg
Gudlaugsson, E, Humbert, A, Kleiner, T, Kohler, J and Andreassen, K (2016) The influence of a model subglacial lake on ice dynamics and internal layering. Cryosphere, 10(2), 751760
Gudmundsson, GH (2003) Transmission of basal variability to a glacier surface. J. Geophys. Res.: Solid Earth, 108(B5)
Iken, A (1981) The effect of the subglacial water pressure on the sliding velocity of a glacier in an idealized numerical model. J. Glaciol., 27(97), 407421
Johnson, J and Fastook, JL (2002) Northern Hemisphere glaciation and its sensitivity to basal melt water. Quat. Int., 95, 6574
Kageyama, M and 9 others (2013) Mid-holocene and last glacial maximum climate simulations with the IPSL model – part I: comparing IPSL_CM5A to IPSL_CM4. Clim. Dynam., 40(9–10), 24472468
Kleiner, T and Humbert, A (2014) Numerical simulations of major ice streams in western Dronning Maud Land, Antarctica, under wet and dry basal conditions. J. Glaciol., 60(220), 215232
Le Brocq, A, Payne, A and Siegert, M (2006) West Antarctic balance calculations: impact of flux-routing algorithm, smoothing algorithm and topography. Comp. Geosci., 32(10), 17801795
Le Brocq, A, Payne, A, Siegert, M and Alley, R (2009) A subglacial water-flow model for West Antarctica. J. Glaciol., 55(193), 879888
Le Meur, E and Huybrechts, P (1996) A comparison of different ways of dealing with isostasy: examples from modelling the Antarctic ice sheet during the last glacial cycle. Ann. Glaciol., 23(1), 309317
Livingstone, SJ and 7 others (2012) Theoretical framework and diagnostic criteria for the identification of palaeo-subglacial lakes. Quat. Sci. Rev., 53, 88110
Livingstone, SJ and 5 others (2015) An ice-sheet scale comparison of eskers with modelled subglacial drainage routes. Geomorphology, 246, 104112
Lliboutry, L (1968) General theory of subglacial cavitation and sliding of temperate glaciers. J. Glaciol., 7, 2158
Nye, J and Frank, F (1973) Water at the bed of a glacier. In Symposium at Cambridge 1969 – Hydrology of Glaciers), vol. 95. Cambridge, England, IAHS Publishing, 189194
Paterson, W and Budd, W (1982) Flow parameters for ice sheet modeling. Cold Reg. Sci. Technol., 6(2), 175177
Pattyn, F (2008) Investigating the stability of subglacial lakes with a full Stokes ice-sheet model. J. Glaciol., 54(185), 353361
Payne, A and Baldwin, D (1999) Thermomechanical modelling of the Scandinavian ice sheet: implications for ice-stream formation. Ann. Glaciol., 28(1), 8389
Röthlisberger, H (1972) Water pressure in intra- and subglacial channels. J. Glaciol., 11, 177203
Saha, S and 9 others (2010) The NCEP climate forecast system reanalysis. Bull. Am. Meteorol. Soc., 91(8), 10151057
Schoof, C (2010) Coulomb friction and other sliding laws in a higher-order glacier flow model. Math. Models Methods Appl. Sci., 20(1), 157189
Shoemaker, E (1986) Subglacial hydrology for an ice sheet resting on a deformable aquifer. J. Glaciol., 32(110), 2030
Shreve, R (1972) Movement of water in glaciers. J. Glaciol., 11, 205214
Siegert, M and Dowdeswell, JA (2004) Numerical reconstructions of the Eurasian ice sheet and climate during the Late Weichselian. Quat. Sci. Rev., 23(11), 12731283
Siegert, M, Dowdeswell, J, Gorman, M and McIntyre, N (1996) An inventory of Antarctic sub-glacial lakes. Antarct. Sci., 8(3), 281286
Stearns, LA, Smith, BE and Hamilton, GS (2008) Increased flow speed on a large East Antarctic outlet glacier caused by subglacial floods. Nat. Geosci., 1(12), 827831
Svendsen, JI and 9 others (2004a) Late Quaternary ice sheet history of northern Eurasia. Quat. Sci. Rev., 23(11), 12291271
Svendsen, JI, Gataullin, V, Mangerud, J and Polyak, L (2004b) The glacial history of the Barents and Kara Sea region. Dev. Quat. Sci., 2, 369378
Tulaczyk, S, Kamb, WB and Engelhardt, HF (2000) Basal mechanics of Ice Stream B, West Antarctica: 1. Till mechanics. J. Geophys. Res. B, 105(B1), 463481
Uppala, SM and 9 others (2005) The ERA-40 re-analysis. Quart. J. R. Meteorol. Soc., 131(612), 29613012
van de Wal, RSW and 6 others (2008) Large and rapid melt-induced velocity changes in the ablation zone of the Greenland Ice Sheet. Science, 321(5885), 111113, ISSN 0036-8075 (doi: 10.1126/science.1158540)
Weatherall, P and 9 others (2015) A new digital bathymetric model of the world's oceans. Earth Space Sci., 2, 331345, ISSN 2333-5084 (doi: 10.1002/2015EA000107), 2015EA000107
Weertman, J (1957) On the sliding of glaciers. J. Glaciol., 3(21), 3338
Weertman, J (1966) Effect of a basal water layer on the dimensions of ice sheets. J. Glaciol., 6(44), 315
Weertman, J (1972) General theory of water flow at the base of a glacier or ice sheet. Rev. Geophys., 10(1), 287333, ISSN 1944-9208 (doi: 10.1029/RG010i001p00287)
Winsborrow, M, Andreassen, K, Corner, GD and Laberg, JS (2010) Deglaciation of a marine-based ice sheet: late Weichselian palaeo-ice dynamics and retreat in the southern Barents Sea reconstructed from onshore and offshore glacial geomorphology. Quat. Sci. Rev., 29(3), 424442
Wolff, EW, Chappellaz, J, Blunier, T, Rasmussen, SO and Svensson, A (2010) Millennial-scale variability during the last glacial: the ice core record. Quat. Sci. Rev., 29(21), 28282838
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Journal of Glaciology
  • ISSN: 0022-1430
  • EISSN: 1727-5652
  • URL: /core/journals/journal-of-glaciology
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords

Metrics

Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed