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Numerical Modeling of the Late Weichselian Svalbard-Barents Sea Ice Sheet

Published online by Cambridge University Press:  20 January 2017

Martin J. Siegert  and
Julian A. Dowdeswell
Martin J. Siegert
Affiliation:
Centre for Glaciology, Institute of Earth Studies, University of Wales, Aberystwyth, Dyfed SY23 3DB, Wales, United Kingdom
Julian A. Dowdeswell
Affiliation:
Centre for Glaciology, Institute of Earth Studies, University of Wales, Aberystwyth, Dyfed SY23 3DB, Wales, United Kingdom
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Abstract

Previous reconstructions of the ice cover of the Svalbard-Barents Sea region during the late Weichselian have ranged from small ice masses on Svalbard to complete inundation of the Barents Shelf region by an ice sheet several kilometers thick. We have used a time-dependent finite-difference numerical model to undertake a new glaciological reconstruction for the Svalbard-Barents Sea Ice Sheet over the last 30,000 yr. The numerical model requires environmental forcing functions in the form of air temperature and precipitation and their behavior with respect to altitude, together with sea-level change and an iceberg calving relation. Ice buildup on Svalbard is calculated to have begun 28,000 yr ago, and maximum dimensions were reached by 20,000 yr ago, covering Svalbard and the northwestern Barents Sea with a center of mass (1.3 km thick) around eastern Svalbard. Decay was complete by about 10,000 yr ago. The margin of the modeled ice sheet at its maximum is in good agreement with observed sea-floor morphological features, but there are discrepancies in timing between the modeled ice sheet decay and (i) a dated meltwater spike in Fram Strait and (ii) the observed rebound curves for Svalbard. An inverse approach was used to predict ice sheet decay, and it was found that increasing the rate of iceberg calving within the model produces a deglaciation some 2000 yr earlier, which is compatible with these two independent datasets. The reconstruction is also compatible with geological evidence on the isostatic response of Bjørnøya, close to the southern limit of the ice sheet, and seismically observed deposits, interpreted to be ice. proximal facies, located in the northwestern Barents Sea. Our time-dependent model reconstructions of the Svalbard-Barents Sea Ice Sheet indicate ice cover over only the northwestern Barents Sea during the late Weichselian, but this does not preclude the presence of ice derived from Fennoscandia and the Kara Sea region elsewhere in the Barents Sea.

Type
Research Article
Information
Quaternary Research , Volume 43 , Issue 1 , January 1995 , pp. 1 - 13
Copyright
University of Washington

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References

Alley, R. B. (1990). Multiple steady states in ice-water-till systems. Annals of Glaciology 14, 1–5.CrossRefGoogle Scholar
Arnold, N., and Sharp, M. (1992). Influence of glacier hydrology on the dynamics of a large Quaternary ice sheet. Journal of Quaternary Science 7, 109–124.CrossRefGoogle Scholar
Barnola, J. M. Raynaud, D. Korotkevich, Y. S., and Lorius, C. (1987). Vostok ice core provides 160,000-year record of atmospheric C02. Nature 329, 408–414.Google Scholar
Barrett, P. J. (1991). Antarctica and global climatic change: A geological perspective. In “Antarctica and Global Climate Change” (Harris, C. M. and Stonehouse, B., Eds.), pp. 35–50. Belhaven Press, London.Google Scholar
Bischof, J. F. (1994). The decay of the Barents ice sheet as documented in Nordic seas ice-rafted debris. Marine Geology 117, 35–55.Google Scholar
Bishop, J. F., and Walton, J. L. W. (1981). Bottom melting under George VI ice shelf, Antarctica. Journal of Glaciology 27, 429–447.CrossRefGoogle Scholar
Boulton, G. S. (1979). Glacial history of the Spitsbergen archipelago and the problem of a Barents Shelf ice sheet. Boreas 8, 59–74.Google Scholar
Budd, W. F. Jenssen, D., and Smith, I. N. (1984). A three-dimensional time-dependent model of the west Antarctic ice sheet. Annals of Glaciology 5, 29–36.CrossRefGoogle Scholar
Chappell, J., and Shackleton, N. J. (1986). Oxygen isotopes and sea level. Nature 324, 137–140.CrossRefGoogle Scholar
Clark, J. A. Farrell, W. E., and Peltier, W. R. (1978). Global changes in post glacial sea-level: A numerical calculation. Quaternary Research 9, 265–287.CrossRefGoogle Scholar
Denton, G. H., and Hughes, T. J. (1981). The Arctic Ice Sheet: An outrageous hypothesis. In “The Last Great Ice Sheets” (Denton, G. H. and Hughes, T. J., Eds.), pp. 440–467. Wiley, New York.Google Scholar
Dowdeswell, J. A. Drewry, D. J. Cooper, A. P. R. Gorman, M. R. Liestol, O., and Orheim, O. (1986), Digital mapping of the Nordaustlandet ice caps from airborne geophysical investigations. Annals of Glaciology 8, 51–58.Google Scholar
Elverh0i, A., and Solheim, A. (1983). The Barents Sea ice sheet—A sedimentological discussion. Polar Research 1, 23–42.Google Scholar
Elverh0i, A. Fjeldskaar, W. Solheim, A. Nyland-Berg, M., and Russwurm, L. (1993). The Barents Sea Ice Sheet—A model of its growth and decay during the last ice maximum. Quaternary Science Reviews 12, 863–873.CrossRefGoogle Scholar
Fairbanks, R. G. (1989). A 17,000-year glacio-eustatic sea level record: Influence of glacial melting rates on the Younger Dryas event and deep ocean circulation. Nature 342, 637–643.Google Scholar
Fleming, K. M. (1992). “The Mass Balance Modeling of Spitsbergen Glaciers.” Unpublished M.Phil. thesis, Univ. of Cambridge.Google Scholar
Forman, S. L. (1990). Post-glacial relative sea level history of northwestern Spitsbergen, Svalbard. Geological Society of America Bulletin 102, 1580–1590.Google Scholar
Fortuin, J. P. F., and Oerlemans, J. (1990). Parameterization of the annual surface temperature and mass balance of Antarctica. Annals of Glaciology 14, 78–84.CrossRefGoogle Scholar
Hagen, J. O., and Liest0l, O. (1990). Long-term glacier mass-balance investigations in Svalbard, 1950-1988. Annals of Glaciology 14, 102–106.CrossRefGoogle Scholar
Hald, M. Saettem, J., and Nesse, E. (1990). Middle and Late Weichselian stratigraphy in shallow drillings from the southwestern Barents Sea: Foraminiferal, amino acid and radiocarbon evidence. Norsk Geolog is k Tidsskrift 70, 241–257.Google Scholar
Hanssen-Bauer, I. Kristensen Solas, M., and Steffensen, E. L. (1990). The climate of Spitsbergen. DNMI Rapport—Klima 39/90.Google Scholar
Hebbeln, D. Dokken, T. Andersen, E. S. Hald, M., and Elverh0i, A. (1994). Moisture supply for northern ice-sheet growth during the Last Glacial Maximum. Nature 370, 357–360.Google Scholar
Hisdal, V. (1985). “Geography of Svalbard.” Oslo, Norsk Polarinstitutt, Polarhandbok 2.Google Scholar
Hughes, T. J. (1987). The marine ice transgression hypothesis. Geografiska Annaler 69, 237–250.Google Scholar
Hughes, T. J. (1992). Theoretical calving rates from glaciers along ice walls grounded in water of variable depths. Journal of Glaciology 38, 282–294.Google Scholar
Huybrechts, P. (1992). The Antarctic ice sheet and environmental change: A three dimensional modeling study. Reports on Polar Research (Alfred-Wegener-Institut fur Polar und Meeresforschung), 99.Google Scholar
Isaksson, E. (1992). The western Barents Sea and the Svalbard archipelago 18,000 years ago—A finite difference computer model reconstruction. Journal of Glaciology 38, 295–301.Google Scholar
Jones, G. A., and Keigwin, L. D. (1988). Evidence from Fram Strait (78°N) for early deglaciation. Nature 336, 56–59.CrossRefGoogle Scholar
Koc, N. Jansen, E., and Haflidason, H. (1993). Paleoceanographic reconstructions of surface ocean conditions in the Greenland, Iceland and Norwegian Seas through the last 14 ka based on diatoms. Quaternary Science Reviews 12, 115–140.CrossRefGoogle Scholar
Lehman, S. J. Jones, G. A. Keigwin, L. D. Andersen, E. S. Butenko, G., and 0stmo, S.-R. (1991). Initiation of Fennoscandian ice-sheet retreat during the last deglaciation. Nature 349, 513–516.Google Scholar
Lindstrom, D. R., and MacAyeal, D. R. (1989). Scandinavian, Siberian, and Arctic Ocean glaciation: Effect of Holocene atmospheric C02 variations. Science 243, 628–631.Google Scholar
Mahaffy, M. W. (1976). A three dimensional numerical model of ice sheets: Tests on the Barnes Ice Cap, Northwest Territories. Journal of Geophysical Research 81, 1059–1066.Google Scholar
Manabe, S., and Bryan, K. Jr., (1985). C02-induced change in a coupled ocean-atmosphere model, and its paleoclimatic implications. Journal of Geophysical Research 90, 11689–11707.Google Scholar
Mangerud, J., and Svendsen, J. I. (1992). The last interglacial-glacial period on Spitsbergen, Svalbard. Quaternary Science Reviews 11, 633–664.CrossRefGoogle Scholar
Mangerud, J. Bolstad, M. Elgersma, A. Helliksen, D. Landvik, J. Y. L0nne, I. Lycke, A. K. Salvigsen, O. Sandahl, T., and Svendsen, J. I. (1992). The last glacial maximum on Spitsbergen, Svalbard. Quaternary Research 38, 1–31.CrossRefGoogle Scholar
Mangerud, J. Astakhov, V. Svendsen, J. I., and Tveranger, J. (1993). The Barents Ice Sheet margin in Arctic Russia: Preliminary results. “Polar North Atlantic margins” (PONAM), fourth annual workshop, December 1993, Cambridge.Google Scholar
Mclnnes, B. J., and Budd, W. F. (1984). A cross-section model for West Antarctica. Annals of Glaciology 5, 95–99.CrossRefGoogle Scholar
Oerlemans, J., and van der Veen, C. J. (1984). “Ice Sheets and Climate.” Reidel Publishing Co., Dordrecht, Holland.CrossRefGoogle Scholar
Paterson, W. S. B. (1981). “The Physics of Glaciers,” 2nd ed. Pergamon, Oxford.Google Scholar
Payne, A. J. Sugden, D. E., and Clapperton, C. M. (1989). Modeling the growth and decay of the Antarctic Peninsula Ice Sheet. Quaternary Research 31, 119–134.CrossRefGoogle Scholar
Pelto, M. S., and Warren, C. R. (1991). Relationship between tidewater glacier calving velocity and water depth at the calving front. Annals of Glaciology 15, 115–118.CrossRefGoogle Scholar
Pelto, M. S. Higgins, S. M. Hughes, T. J., and Fastook, J. L. (1990). Modeling mass-balance changes during a glaciation cycle. Annals of Glaciology 14, 238–241.Google Scholar
Robin, G. de Q. (1955). Ice movement and temperature distribution in glaciers and ice sheets. Journal of Glaciology 3, 589–606.Google Scholar
Saettem, J. Poole, D. A. R. Ellingsen, K. L., and Sejrup, H. P. (1991). Glacial geology of outer Bj0m0yrenna, southwestern Barents Sea. Marine Geology 103, 15–51.CrossRefGoogle Scholar
Salvigsen, O. (1993). Glacial geology of Bj0m0ya, Svalbard. “Polar North Atlantic margins” (PONAM), fourth annual workshop, December 1993, Cambridge.Google Scholar
Salvigsen, O. Forman, S. L., and Miller, G. H. (1992). Thermophilous molluscs on Svalbard during the Holocene and their paleoclimatic implications. Polar Research 11, 1–10.Google Scholar
Shackleton, N. J. (1987). Oxygen isotopes, ice volume and sea level. Quaternary Science Reviews 6, 183–390.Google Scholar
Siegert, M. J. (1993). Numerical modeling studies of the Svalbard-Barents Sea Ice Sheet. Unpublished Ph.D. thesis, Univ. of Cambridge.Google Scholar
Solheim, A. Russwurm, L. Elverh0, A., and Nyland Berg, M. (1990). Glacial geomorphic features in the Northern Barents Sea: Direct evidence for grounded ice and implications for the pattern of deglaciation and late glacial sedimentation. In “Glacimarine Environments: Processes and Sediments” (Dowdeswell, J. A. and Scourse, J. D., Eds.), pp. 253–268. Geological Society Special Publication 53.Google Scholar
Stuiver, M., and Reimer, P. J. (1993). Extended l4C data base and revised CALIB 3.0 14C age calibration program. Radiocarbon 35, 215–230.CrossRefGoogle Scholar
Svendsen, J. I. Mangrud, J. Elverh0i, A. Solheim, A., and Schiittenhelm, R. T. E. (1992). The Late Weichselian glacial maximum on western Spitsbergen inferred from offshore sediment cores. Marine Geology 104, 1–17.Google Scholar
Vorren, T, O., and Kristoffersen, K. (1986). Late Quaternary glaciation in the south-western Barents Sea. Boreas 15, 51–59.CrossRefGoogle Scholar
Vorren, T. O. Vorren, K.-D. Aim, T. Gulliksen, S., and L0vlie, R. (1988). The last deglaciation (20,000 to 11,000 B.P.) on And0ya, northern Norway. Boreas 17, 41–77.CrossRefGoogle Scholar