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Does englacial water storage drive temperate glacier surges?

  • Craig S. Lingle (a1) and Dennis R. Fatland (a2)

Abstract

Hydrological studies of surge-type and steady-flow glaciers, combined with recent space-borne synthetic aperture radar interferometry measurements of the motion of Bagley Ice Valley, Alaska, U.S.A., during its 1993–95 surge, suggest a temperate-glacier surge hypothesis that is consistent with observational evidence and appears capable of shedding light on several aspects of surge behavior. We propose that the fundamental driver of temperate-glacier surges is englacial storage of water, combined with gravity-driven movement of stored water to the bed during winter. Whether a given glacier is surge-type is a matter not of whether, but of the degree to which, these processes occur. A surge-type glacier must have sufficient storage capacity for continued downward movement of englacially stored water during winter to finally overwhelm the constricted basal drainage system, thereby forcing pervasive failure of the subglacial till — or, alternatively, widespread and rapid basal sliding — thus initiating a surge. We further propose that the “sufficient storage capacity” requirement is most easily met by glaciers with large thickness, which are therefore likely to be long and to have, on average, low surface slopes. The average length \of the surge cycle in a given region appears to be a function of the mass balances, which, after each surge, determine the time required to restore glaciers to their pre-surge geometries. We suggest that the stochastic timing of surge onset for a particular glacier, however, is a result of the uncertainty of the meteorological conditions required to cause englacial storage of a sufficiently large volume of water.

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References

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Björnsson, H. 1972. Bægisárjökull, north-Iceland. Results of glaciological investigations 1967–1968. Part 2. The energy balance. Jokull, 22,4461.
Björnsson, H. 1998. Hydrological characteristics of the drainage system beneath a surging glacier. Nature, 395(6704), 771774.
Clarke, G. K. C. 1987. Subglacial till: a physical framework for its properties and processes. J. Geophys. Res., 92(), 90239036.
Clarke, G. K. C., Collins, S. G. and Thompson, D. E.. 1984. Flow, thermal structure, and subglacial conditions of a surge-type glacier. Can. J. Earth Sci., 21(2), 232240.
Clarke, G. K. C., Schmok, J.P., Ommanney, C. S. L. and Collins, S.G.. 1986. Characteristics of surge-type glaciers. J. Geophys. Res., 91(B7), 71657180.
Collins, D. N. 1982. Water storage in an Alpine glacier. International Association of Hydrological Sciences Publication 138 (Symposium at Exeter 1982 −hydrological aspects of alpine and high mountain areas), 113122.
Fatland, D.R. 1998. Studies of Bagley Icefieldduring Surge and Black Rapids Glacier, Alaska, Using Spaceborne SAR Interferometry. (Ph.D. thesis, University of Alaska Fairbanks.)
Fatland, D. R. and Lingle, C. S.. 1998. Analysis of the 1993–95 Bering Glacier (Alaska) surge using differential SAR interferometry J. Glaciol., 44(148), 532546.
Fatland, D. R. and Lingle, C. S.. 2002. InSAR observations of the 1993–95 Bering Glacier (Alaska, U.S.A.) surge and a surge hypothesis. J. Glaciol, 48(162), 439451.
Flowers, G. E. 2000. A Multicomponent Coupled Model of Glacier Hydrology. (Ph.D. thesis, University of British Columbia.)
Flowers, G. E. and Clarke, G. K. C.. 1999. Surface and bed topography of Trapridge Glacier, Yukon Territory, Canada: digital elevation models and derived hydraulic geometry J. Glaciol, 45(149), 165174.
Fountain, A. G. 1989. The storage of water in, and hydraulic characteristics of, the firn of South Cascade Glacier, Washington State, U.S.A. Ann. Glaciol., 13,6975.
Fountain, A. G. and Walder, J. S.. 1998. Water flow through temperate glaciers. Rev. Geophys, 36(3), 299328.
Humphrey, N. F. and Raymond, C. F.. 1994. Hydrology erosion and sediment production in a surging glacier: Variegated Glacier, Alaska, 1982–83. J. Glaciol., 40(136), 539552.
Iken, A., Rothlisberger, H., Flotron, A. and Haeberli, W. 1983 The uplift of Unteraargletscher at the beginning of the melt season − a consequence of water storage at the bed? J. Glaciol., 29(101), 2847.
Kamb, B 1987 Glacier surge mechanism based on linked cavity configuration of the basal water conduit system. J. Geophys. Res., 92 (), 90839100.
Kamb, B and 7 others. 1985. Glacier surge mechanism: 1982–1983 surge of Variegated Glacier, Alaska. Science, 227(4686) 469479.
Mair, D., Nienow, P., Willis, I. and Sharp, M.. 2001. Spatial patterns of glacier motion during a high-velocity event: Haut Glacier dArolla, Switzerland. J. Glaciol, 47(156), θ20.
Molnia, B. F. and Post, A.. 1995. Holocene history of Bering Glacier, Alaska: a prelude to the 1993–1994 surge. Phys. Geogr., 16(2), 87117
Murray, T., Stuart, G.W, Fry, M., Gamble, N. H. and Crabtree, M. D.. 2000. Englacial water distribution in a temperate glacier from surface and borehole radar velocity analysis. J. Glaciol, 46(154), 389398.
Post, A. 1972. Periodic surge origin of folded medial moraines on Bering piedmont glacier, Alaska. J. Glaciol, 11(62), 219226.
Raymond, C. F. 1987 How do glaciers surge? A review. J. Geophys. Res., 92(), 91219134.
Raymond, C. F. and Harrison, W D.. 1986 Winter initiation of surges. [Abstract] Eidg. Tech. Hochschule, ZüRich. Versuchsanst. Wasserbau, Hydrol. Glaziol Mitt., 90, 8586
Raymond, C. F, Benedict, R.J., Harrison, W D., Echelmeyer, K. A. and Sturm, M.. 1995. Hydrological discharges and motion of Fels and Black Rapids Glaciers, Alaska, U.S.A.: implications for the structure of their drainage systems. J. Glaciol, 41(138), 290304.
Rothlisberger, H. and Lang, H.. 1987 Glacial hydrology. In Gurnell, A. M. and Clark, M.J., eds. Glacio-Fluvial Sediment Transfer: An Alpine Perspective. Chichester, etc., John Wiley and Sons, 207284.
Roush, J. J. 1996 The 1993–94 Surge of Bering Glacier, Alaska, Observed With Satellite Synthetic Aperture Radar. (M.Sc. thesis, University of Alaska Fairbanks.)
Roush, J. J., Lingle, C. S., Guritz, R. M. and Fatland, D. R.. 2003 Surge-front propagation and velocities during the early-1993–95 surge of Bering Glacier, Alaska, from sequential SAR imagery. Ann. Glaciol, 36 (see paper in this volume)
Stenborg, T 1970. Delay of run-off from a glacier basin. Geogr. Ann., 52A(1), 130.
Tangborn, W.V., Krimmel, R. M. and Meier, M. F.. 1975. A comparison of glacier mass balance by glaciological, hydrological and mapping methods, South Cascade Glacier, Washington International Association of Hydrological Sciences Publication 104 (Symposium at Moscow 1971 Snow and Ice), 185196.
Truffer, M., Motyka, R.J., Harrison, W. D., Echelmeyer, K. A., Fisk, B. and Tulaczyk, S.. 1999. Subglacial drilling at Black Rapids Glacier, Alaska, U.S.A.: drilling method and sample descriptions. J. Glaciol., 45(151), 495505.
Truffer, M., Harrison, W D and Echelmeyer, K. A.. 2000. Glacier motion dominated by processes deep in underlying till. J. Glaciol., 46(153), 213221.
Weertman, J. 1973 Can a water-filled crevasse reach the bottom surface of a glacier? International Association of Scientific Hydrology Publication 95 (Symposium At Cambridge 1969 − Hydrology of Glaciers), 139145.
Willis, I. C., Sharp, M.J. and Richards, K. S.. 1993. Studies of the water balance of Midtdalsbreen, Hardangerjokulen, Norway: 2. Water storage and runoff prediction Z Gletscherkd. Glazialgeol., 2728,19911992,117–138.
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Annals of Glaciology
  • ISSN: 0260-3055
  • EISSN: 1727-5644
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