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The retreat of a tidewater glacier: observations and model calculations on Hansbreen, Spitsbergen

  • Andreas Vieli (a1) (a2), Jacek Jania (a3) and Lezek Kolondra (a3)
Abstract

Based on observations and model calculations, the retreat over the last two decades of Hansbreen, a tidewater glacier in southern Spitsbergen, Svalbard, is investigated. The observations of the calving-front position between 1982 and 1998 show an abrupt retreat in 1990, which is suggested to be related to a depression in the glacier bed. The observed seasonal variations of the front position are mainly due to variations of the calving rate. The observations of Hansbreen further indicate that during periods of slow front-position changes, melting at the water-line may play an important role in triggering the process of calving. The evolution of Hansbreen between 1982 and 1998 is simulated with a numerical model for the dynamics of tidewater glaciers. Using a flotation criterion for calving in which for each time-step the part of the glacier terminus which is below a critical height above buoyancy is removed, we are able to reproduce the observed rapid retreat of Hansbreen through the depression in the glacier bed. From the observations and model calculations, we conclude that the rapid retreat is mainly an effect of basal topography in the terminus region and not a direct response to a change in mass balance.

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References
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Baranowski, S. 1977. The subpolar glaciers of Spitsbergen seen against the climate of this region. Acta Univ. Wratislav. 410.
Bindschadler, R. 1983. The importance of pressurized subglacial water in separation and sliding at the glacier bed. J. Glaciol., 29(101), 319.
Boulton, G. S. and Hindmarsh, R. C. A.. 1987. Sediment deformation beneath glaciers: rheology and geological consequences. J. Geophys. Res., 92(B9), 90599082.
Brown, C. S., Meier, M. F. and Post, A.. 1982. Calving speed of Alaska tidewater glaciers, with application to Columbia Glacier. U.S. Geol. Surv. Prof. Pap. 1258-C.
El-Tahan, M., Venkatesh, S. and El-Tahan, H.. 1987.Validation and quantitative assessment of the deterioration mechanisms of arctic icebergs. J. Offshore Mech. Arct. Eng., 109(1), 102108.
Funk, M. and Röthlisberger, H.. 1989. Forecasting the effects of a planned reservoir which will partially flood the tongue of Unteraargletscher in Switzerland. Ann. Glaciol., 13, 7681.
Giżejewski, J. 1997. Bottom morphology of the Hans Glacier forefield (Hornsund, south-west Spitsbergen, Svalbard). Preliminary report. In Glowacki, P., ed. Polish Polar Studies, 24th Polar Symposium.Warszawa, Polish Academy of Sciences. Institute of Geophysics, 6369.
Glazovskiy, A. F., Kolondra, L., Moskalevskiy, M. Yu. and Yaniya, Ya.. 1992. Research into the Hansbreen, a tidewater glacier in Spitsbergen. Polar Geogr. Geol., 16(3), 243252.
Haeberli, W., Hoelzle, M. and Suter, S., eds. 1996. Glacier Mass Balance Bulletin. Bulletin .No. 4 (1994–1995). Zürich, IAHS(ICSI), World Glacier Monitoring Service; Nairobi, UNEP; Paris, UNESCO.
Hanson, B. and Hooke, R. LeB.. 2000. Glacier calving: a numerical model of forces in the calving-speed/water-depth relation. J. Glaciol., 46(153), 188196.
Hunter, L. E. and Powell, R. D.. 1998. Ice foot development at temperate tidewater margins in Alaska. Geophys. Res. Lett., 25(11), 19231926.
Jania, J. 1988. Dynamiczne procesy glacjalne na poludniowym Spitsbergenie (wświetle badań fotointerpretacyjnych i fotogrametrycznych) [Dynamic glacial processes in south Spitsbergen (in the light of photointerpretation and photogrammetric research) ]. Katowice, Uniwersytet Śla¸ski. (Prace Naukowe Uniwersytetu Śla¸skiego w Katowicach 955.)
Jania, J. 1994. Field investigations during the glaciological expeditions to Spitsbergen in the period 1992–1994: interim report. Katowice, University of Silesia. Faculty of Earth Sciences, Department of Geomorphology.
Jania, J. and Kaczmarska, M.. 1997. Hans Glacier — a tidewater glacier in southern Spitzbergen: summary of some results. Byrd Polar Res. Cent. Rep. 15, 95104.
Jania, J. and Kolondra, L.. 1982. Field investigations performed during the glaciological Spitsbergen expedition in the summer of 1982: interim report. Sosnowiec, Poland, Uniwersytetu Śla&#x00B8;skiego. Instytut Geografii.
Kirkbride, M. P. and Warren, C. R.. 1997. Calving processes at a grounded ice cliff. Ann. Glaciol., 24, 116121.
Kosiba, A. 1960. Some results of glaciological investigations in SW-Spitsbergen carried out during the Polish I.G.Y. Spitsbergen Expeditions in 1957, 1958 and 1959. Wroclaw, Zeszyty Naukowe Universytetu Wroclawskiego. (Serie B 4.)
Meier, M. F. and Post, A.. 1987. Fast tidewater glaciers. J. Geophys. Res., 92(B9), 90519058.
Moore, J. C. and 8 others. 1999. High-resolution hydrothermal structure of Hansbreen, Spitsbergen, mapped by ground-penetrating radar. J. Glaciol., 45(151), 524532.
Moskal, W. 1987. Charakterystyka hydrologiczna zatoki bialego niedźwidzia (Spitzbergen ) [Hydrological characteristics of the Isbjørnhamna (Spitsbergen) ]. Gdansk, Universytetu Gdanskiego. Instytut Oceanografii. (Technical Report.)
Naruse, R. and Skvarca, P.. 2000. Dynamic features of thinning and retreating Glaciar Upsala, a lacustrine calving glacier in southern Patagonia. Arct. Antarct. Alp. Res., 32(4), 485491.
Neshyba, S. and Josberger, E. G.. 1980. On the estimation of Antarctic iceberg melt rate. J. Phys. Oceanogr., 10(10), 16811685.
Powell, R. D. 1988. Processes and facies of temperate and sub-polar glaciers with tide-water fronts. Boulder, CO, Geological Society of America. (Geological Society of America Short Course Notes.)
Robe, R. Q., Maier, D. C. and Kollmeyer, R. C.. 1977. Iceberg deterioration. Nature, 267(5611), 505506.
Sikonia, W. G. 1982. Finite-element glacier dynamics model applied to Columbia Glacier, Alaska. U.S. Geol. Surv. Prof. Pap. 258-B.
Swerpel, S. 1982. Hydrological investigations of the coastal waters in the Hornsund fiord in the summer of 1975. Wratislav, Acta Universitatis Wratislaviensis. (Interim Report 525.)
Van der Veen, C. J. 1996. Tidewater calving. J. Glaciol., 42(141), 375385.
Van der Veen, C. J. 1998. Fracture mechanics approach to penetration of bottom crevasses on glaciers. Cold Reg. Sci.Technol., 27(3), 213223.
Venteris, E. R. 1999. Rapid tidewater glacier retreat: a comparison between Columbia Glacier, Alaska and Patagonian calving glaciers. Global Planet. Change, 22(1–4), 131138.
Vieli, A., Funk, M. and Blatter, H.. 2000. Tidewater glaciers: frontal flow acceleration and basal sliding. Ann. Glaciol., 31, 217221.
Vieli, A., Funk, M. and Blatter, H.. 2001. Flow dynamics of tidewater glaciers: a numerical modelling approach. J. Glaciol., 47(159), 595606.
Warren, C. R. 1993. Rapid recent fluctuations of the calving San Rafael Glacier, Chilean Patagonia: climatic or non-climatic? Geogr. Ann., 75A(3), 111125.
Warren, C. R. 1999. Calving speed in freshwater at Glaciar Ameghino, Patagonia. Gletscherkd. Glazialgeol., 35(1), 2134.
Warren, C. and Aniya, M.. 1999. The calving glaciers of southern South America. Global Planet. Change, 22(1–4), 5977.
White, F. M., Spaulding, M. L. and Gominho, L.. 1980. Theoretical estimates of the various mechanisms involved in iceberg deterioration in the open ocean environment. Washington, DC, U.S. Coast Guard. Research and Development Center. (Report CG-D-62-80 81-20571)
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Journal of Glaciology
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