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Evidence for abundant subglacial meltwater beneath the paleo-ice sheet in Pine Island Bay, Antarctica

  • Ashley L. Lowe (a1) and John B. Anderson (a1)
Abstract

Marine-geological and -geophysical data collected from the continental shelf in Pine Island Bay, Antarctica, reveal a complex paleo-subglacial drainage system controlled by bedrock topography and subglacial meltwater discharge. Significant amounts of freely flowing meltwater existed beneath former ice sheets in Pine Island Bay. Subglacial drainage is characterized by descriptions of glacial landforms imaged on the sea floor and sedimentary deposits collected in piston cores. Bedrock geology is characterized using seismic data. Large-scale landforms on the shelf include channels and cavities incised into impermeable crystalline bedrock. There is a transition from randomly oriented channels on the inner shelf to a dendritic pattern of elongate channels on the middle shelf. On the outer shelf, a change in basal conditions occurs where sedimentary deposits bury crystalline bedrock. No evidence for flowing meltwater exists on sedimentary substrates. Instead, meltwater formed at the ice–sediment contact was incorporated into the sediments, contributing to development of a deforming bed, which was sampled in piston cores. Characterization of subglacial meltwater processes that occurred in the past may aid in understanding the role meltwater plays in stability of the West Antarctic ice sheet today.

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References
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Alley, R. B. 1989.Water-pressure coupling of sliding and bed deformation: I. Water system. J. Glaciol., 35(119), 108118.
Alley, R. B., Blankenship, D. D., Bentley, C. R. and Rooney, S.T.. 1986. Deformation of till beneath Ice Stream B,West Antarctica. Nature, 322(6074), 5759.
Alley, R. B., Blankenship, D. D., Bentley, C. R. and Rooney, S.T.. 1987a. Till beneath Ice Stream B. 3. Till deformation: evidence and implications. J. Geophys. Res., 92(B9), 89218929.
Alley, R. B., Blankenship, D. D., Rooney, S.T. and Bentley, C. R.. 1987b. Till beneath Ice Stream B. 4. A coupled ice–till flow model. J. Geophys. Res., 92(B9), 89318940.
Alley, R. B. and Whillans, I. M.. 1991. Changes in the West Antarctic ice sheet. Science, 254(5034), 959963.
Anandakrishnan, S., Blankenship, D. D., Alley, R. B. and Stoffa, P. L.. 1998. Influence of subglacial geology on the position of a West Antarctic ice stream from seismic observations. Nature, 394(6688), 6265.
Anderson, J. B. 1999. Antarctic marine geology. Cambridge, etc., Cambridge University Press.
Anderson, J. B., Wellner, J. S., Lowe, A. L., Mosola, A. B. and Shipp, S. S.. 2001. The footprint of the expandedWest Antarctic Ice Sheet: ice stream history and behaviour. GSA Today, 11(10), 49.
Anderson, J. B., Shipp, S. S., Lowe, A. L., Wellner, J. S. and Mosola, A. B.. 2002. The Antarctic ice sheet during the last glacial maximum and its subsequent retreat history: a review. Quat. Sci. Rev., 21(1–3), 4970.
Bart, P. J. and Anderson, J. B.. 2000. Relative stability of the Antarctic ice sheets during the Plio-Pleistocene from the prespective of the continental shelf. Earth Planet. Sci. Lett., 182, 259272.
Bell, R. E. and 6 others. 1998. Influence of subglacial geology on the onset of a West Antarctic ice stream from aerogeophysical observations. Nature, 394(6688), 5862.
Benn, D. I. and Evans, D. J. A.. 1998. Glaciers and glaciation. London, Arnold.
Bindschadler, R. 1983. The importance of pressurized subglacial water in separation and sliding at the glacier bed. J. Glaciol., 29(101), 319.
Bindschadler, R. 1997. West Antarctic ice sheet collapse? Science, 276(5313), 662663.
Blankenship, D. D., Bentley, C. R., Rooney, S.T. and Alley, R. B.. 1986. Seismic measurements reveal a saturated porous layer beneath an active Antarctic ice stream. Nature, 322(6074), 5457.
Blankenship, D. D., Bentley, C. R., Rooney, S.T. and Alley, R. B.. 1987. Till beneath Ice Stream B. 1. Properties derived from seismic travel times. J. Geophys. Res., 92(B9), 89038911.
Blankenship, D. D. and 9 others. 2001. Geologic controls on the initiation of rapid basal motion for West Antarctic ice streams: a geophysical perspective including new airborne radar sounding and laser altimetry results. In Alley, R. B. and Bindschadler, R. A., eds. The West Antarctic ice sheet: behavior and environment. Washington, DC, American Geophysical Union, 105121. (Antarctic Research Series 77.)
Booth, D. B. and Hallet, B.. 1993. Channel networks carved by subglacial water: observations and reconstruction in the eastern Puget Lowland of Washington. Geol. Soc. Am. Bull., 105(5), 671683.
Boulton, G. S. 1986. A paradigm shift in glaciology. Nature , 322(6074), 18.
Boulton, G. S. and Hindmarsh, R. C. A.. 1987. Sediment deformation beneath glaciers: rheology and geological consequences. J. Geophys. Res., 92(B9), 90599082.
Boulton, G. S. and Jones, A. S.. 1979. Stability of temperate ice caps and ice sheets resting on beds of deformable sediment. J. Glaciol., 24(90), 2943.
Boyd, R., Scott, D. B. and Douma, M.. 1988. Glacial tunnel valleys and Quaternary history of the Outer Scotian Shelf. Nature, 333(6168), 6164.
Brennand, T. A. and Shaw, J.. 1994. Tunnel channels and associated landforms, south-central Ontario: their implications for ice-sheet hydrology. Can. J. Earth Sci., 31(3), 505522.
Brennand, T. A., Shaw, J. and Sharpe, D. R.. 1996. Regional-scale meltwater erosion and deposition patterns, northern Quebec, Canada. Ann. Glaciol., 22, 8592.
Cassidy, D. S. 1983. USCG Glacier Operation Deep Freeze 1981. Bransfield Strait and eastern Amundsen Sea piston core descriptions. Tallahassee, FL, Florida State University. Antarctic Research Facility.
Clark, C. D. 1993. Mega-scale glacial lineations and cross-cutting ice-flow landforms. Earth Surf. Processes Landforms, 18(1), 129.
Clayton, L., Attig, J.W. and Mickelson, D. M.. 1999. Tunnel channels formed in Wisconsin during the last glaciation. In Mickelson, D. M. and Attig, J.W., eds. Glacial processes: past and present. Boulder, CO, Geological Society of America, 6982. (Special Paper 337.)
Crabtree, R. D. and Doake, C. S. M.. 1982. Pine Island Glacier and its drainage basin: results from radio-echo sounding. Ann. Glaciol., 3, 6570.
Denton, G. H., Prentice, M. L., Kellogg, D. E. and Kellogg, T. B.. 1984. Late Tertiary history of the Antarctic ice sheet: evidence from the dry valleys. Geology, 12(5), 263267.
Domack, E.W., Jacobson, E. K., Shipp, S. S. and Anderson, J. B.. 1999. Late Pleistocene–Holocene retreat of the West Antarctic ice-sheet system in the Ross Sea: Part 2 — sedimentologic and stratigraphic signature: geophysical results. Geol. Soc. Am. Bull., 111(10), 15171536.
Dowdeswell, J. A. and Siegert, M. J.. 1999.The dimensions and topographic setting of Antarctic subglacial lakes and implications for large-scale water storage beneath continental ice sheets. Geol. Soc. Am. Bull., 111(2), 254263.
Ehlers, J. and Grube, F.. 1983. Meltwater deposits in north-west Germany. In Ehlers, J., ed. Glacial deposits in north-west Europe. Rotterdam, A. A. Balkema, 249256.
Ehlers, J., Meyer, K. D. and Stephan, H. J.. 1984. Pre-Weichselian glaciation of north-west Europe. Quat. Sci. Rev., 3(1), 140.
Engelhardt, H., Humphrey, N., Kamb, B. and Fahnestock, M.. 1990. Physical conditions at the base of a fast moving Antarctic ice stream. Science, 248(4951), 5759.
Ferrigno, J. G., Lucchitta, B. K., Mullins, K. F., Allison, A. L., Allen, R. J. and Gould, W. G.. 1993. Velocity measurements and changes in position of Thwaites Glacier/iceberg tongue from aerial photography, Landsat images and NOAA AVHRR data. Ann. Glaciol., 17, 239244.
Goodwin, I. D. 1988.The nature and origin of a jökulhlaup near Casey Station, Antarctica. J. Glaciol., 34(116), 95101.
Hellmer, H. H., Jacobs, S. S. and Jenkins, A.. 1998. Oceanic erosion of a floating Antarctic glacier in the Amundsen Sea. In Jacobs, S. S. and Weiss, R. F., eds. Ocean, ice and atmosphere: interactions at the Antarctic continental margin. Washington, DC, American Geophysical Union, 83100. (Antarctic Research Series 75.)
Hiemstra, J. F. 2001.“Dirt pictures” reveal the past extent of the grounded Antarctic ice sheet. (Ph.D. thesis, Universiteit van Amsterdam.)
Holtedahl, H. 1967. Notes on the formation of fjords and fjord-valleys. Geogr. Ann., 49A(2–4), 188203.
Hughes, T. 1977. West Antarctic ice streams. Rev. Geophys. Space Phys., 15(1), 146.
Hughes, T. J. 1981. Numerical reconstruction of paleo-ice sheets. In Denton, G. H. and Hughes, T. J., eds. The last great ice sheets. New York, etc., John Wiley and Sons, 221261.
Hughes, T. 1996. Can ice sheets trigger abrupt climatic change? Arct. Alp. Res., 28(4), 448465.
Jacobs, S. S., Hellmer, H. H. and Jenkins, A.. 1996. Antarctic ice sheet melting in the southeast Pacific. Geophys. Res. Lett., 23(9), 957960.
Jenkins, A., Vaughan, D. G., Jacobs, S. S., Hellmer, H. H. and Keys, J. R.. 1997. Glaciological and oceanographic evidence of high melt rates beneath Pine Island Glacier, West Antarctica. J. Glaciol., 43(143), 114121.
Kamb, B. and 7 others. 1985. Glacier surge mechanism: 1982–1983 surge of Variegated Glacier, Alaska. Science, 227(4686), 469479.
Kellogg, D. E. and Kellogg, T. B.. 1987a. Microfossil distributions in modern Amundsen Sea sediments. Mar. Micro-Palaeontol., 12(3), 203222.
Kellogg, T. B. and Kellogg, D. E.. 1987b. Late Quaternary deglaciation of the Amundsen Sea: implications for ice sheet modelling. International Association of Hydrological Sciences Publication 170 (Symposium at Vancouver 1987 — The Physical Basis of Ice Sheet Modelling), 349357.
Kellogg, T. B., Kellogg, D. E. and Hughes, T. J.. 1985. Amundsen Sea sediment coring. Antarct. J. U.S., 20(5), 7981.
Kor, P. S. G., Shaw, J. and Sharpe, D. R.. 1991. Erosion of bedrock by subglacial meltwater, Georgian Bay, Ontario: a regional view. Can. J. Earth Sci., 28(4), 623642.
Lliboutry, L. 1979. Local friction laws for glaciers: a critical review and new openings. J. Glaciol., 23(89), 6795.
Lowe, A. L. and Anderson, J. B.. 2002. Reconstruction of the West Antarctic ice sheet in Pine Island Bay during the last glacial maximum and its subsequent retreat history. Quat. Sci. Rev., 21, 18791897.
Lucchitta, B. K. and Rosanova, C. E.. 1997. Velocities of Pine Island and Thwaites glaciers, West Antarctica, from ERS-1 SAR images. In Third ERS Scientific Symposium, 14–21 March 1997, Florence, Italy. Proceedings. Vol. 2. Noordwijk, European Space Agency, 819824. (ESA Publication SP-414.)
Mac Ayeal, D. R. 1989. Charting the future course of the West Antarctic ice sheet and its effect on sea level. [Abstract.] Eos, 70(43), 1002.
Mackiewicz, N. E., Powell, R. D., Carlson, P. R. and Molnia, B. F.. 1984. Interlaminated ice-proximal glacimarine sediments in Muir Inlet, Alaska. Mar. Geol., 57(1/4), 113147.
O Cofaigh, C. 1996.Tunnel valley genesis. Prog. Phys. Geogr., 20(1), 119.
Oppenheimer, M. 1998. Global warming and the stability of the West Antarctic ice sheet. Nature, 393(6683), 325332.
Pair, D. L. 1997. Thin film, channelized drainage, or sheetfloods beneath a portion of the Laurentide ice sheet: an examination of glacial erosion forms, northern NewYork State, U.S.A. Sediment. Geol., 111(1–4), 199215.
Paterson, W. S. B. 1994. The physics of glaciers. Third edition. Oxford, etc., Elsevier.
Piotrowski, J. A. 1994. Tunnel-valley formation in northwest Germany — geology, mechanisms of formation and subglacial bed conditions for the Bornhöved tunnel valley. Sediment. Geol., 89(1–2), 107141.
Piotrowski, J. A. and Tulaczyk, S.. 1999. Subglacial conditions under the last ice sheets in northwest Germany: ice–bed separation and enhanced basal sliding? Quat. Sci. Rev., 18(6), 737751.
Rignot, E. J. 1998. Fast recession of a West Antarctic glacier. Science, 281(5376), 549551.
Robin, G. de Q., Swithinbank, C.W. M. and Smith, B. M. E.. 1970. Radio echo exploration of the Antarctic ice sheet. International Association of Scientific Hydrology Publication 86 (Symposium at Hanover 1968 — Antarctic Glaciological Exploration (ISAGE)), 97115.
Rooney, S.T., Blankenship, D. D., Alley, R. B. and Bentley, C. R.. 1987. Till beneath Ice Stream B.2. Structure and continuity. J. Geophys. Res., 92(B9), 89138920.
Scherer, R. P., Aldahan, A., Tulaczyk, S., Possnert, G., Engelhardt, H. and Kamb, B.. 1998. Pleistocene collapse of the West Antarctic ice sheet. Science, 281(5373), 8285.
Sharpe, D. R. and Shaw, J.. 1989. Erosion of bedrock by subglacial meltwater, Cantley, Quebec. Geol. Soc. Am. Bull., 101(8), 10111020.
Shaw, J. 1988. Subglacial erosional marks, Wilton Creek, Ontario. Can. J. Earth Sci., 25(8), 12561267.
Shaw, J. 1989. Drumlins, subglacial meltwater floods, and ocean responses. Geology, 17(9), 853856.
Shaw, J. 1994. Hairpin erosional marks, horseshoe vortices and subglacial erosion. Sediment. Geol., 91(1–4), 269283.
Shaw, J., Kvill, D. and Rains, B.. 1989. Drumlins and catastrophic subglacial floods. Sediment. Geol., 62(3–4), 177202.
Shepherd, A., Wingham, D. J., Mansley, J. A. D. and Corr, H. F. J.. 2001. Inland thinning of Pine Island Glacier,West Antarctica. Science, 291(5505), 862864.
Shipp, S. S., Anderson, J. B. and Domack, E.W.. 1999. Late Pleistocene–Holocene retreat of the West Antarctic ice-sheet system in the Ross Sea: Part 1 — geophysical results. Geol. Soc. Am. Bull., 111(10), 14861516.
Shreve, R. L. 1972. Movement of water in glaciers. J. Glaciol., 11(62), 205214.
Siegert, M. J. 2000. Antarctic subglacial lakes. Earth Sci. Rev., 50(1–2), 2950.
Stuiver, M., Denton, G. H., Hughes, T. J. and Fastook, J. L.. 1981. The history of the marine ice sheet inWest Antarctica: a working hypothesis. In Denton, G. H. and Hughes, T. J., eds. The last great ice sheets. New York, etc., JohnWiley and Sons, 319436.
Sugden, D. E., Denton, G. H. and Marchant, D. R.. 1991. Subglacial meltwater channel systems and ice sheet overriding, Asgard Range, Antarctica. Geogr. Ann., 73A(2), 109121.
Sugden, D. E., Marchant, D. R. and Denton, G. H.. 1990. Subglacial meltwater system, Sessrumir Valley, western Asgard Range, Antarctica. Antarct. J. U.S., 25(5), 1990 review, 5658.
Thomas, R. H. 1979. The dynamics of marine ice sheets. J. Glaciol., 24(90), 167177.
Tulaczyk, S., Kamb, B., Scherer, R. P. and Engelhardt, H. F.. 1998. Sedimentary processes at the base of theWest Antarctic ice stream: constraints from textural and compositional properties of subglacial debris. J. Sediment. Res., 68(3A), 487496.
Vaughan, D. G., Bamber, J. L., Giovinetto, M. B., Russell, J. and Cooper, A. P. R.. 1999. Reassessment of net surface mass balance in Antarctica. J. Climate, 12(4), 933946.
Vaughan, D. G. and 9 others. 2001. A review of Pine Island Glacier basin,West Antarctica: hypotheses of instability vs. observations of change. In Alley, R. B. and Bindschadler, R. A., eds. The West Antarctic ice sheet: behavior and environment. Washington, DC, American Geophysical Union, 237256. (Antarctic Research Series 77.)
Walder, J. and Hallet, B.. 1979. Geometry of former subglacial water channels and cavities. J. Glaciol., 23(89), 335346.
Weertman, J. 1964.The theory of glacier sliding. J. Glaciol., 5(39), 287303.
Weertman, J. 1972. General theory of water flow at the base of a glacier or ice sheet. Rev. Geophys. Space Phys., 10(1), 287333.
Wellner, J. S., Lowe, A. L., Shipp, S. S. and Anderson, J. B.. 2001. Distribution of glacial geomorphic features on the Antarctic continental shelf and correlation with substrate: implications for ice behavior. J. Glaciol., 47(158), 397411.
Wingfield, R. 1990. The origin of major incursions within the Pleistocene deposits of the North Sea. Mar. Geol., 91(1–2), 3152.
Wingham, D. J., Ridout, A. L., Scharroo, R., Arthern, R. J. and Shum, C. K.. 1998. Antarctic elevation change 1992 to 1996. Science, 282(5388), 456458.
Wright, H. E. Jr. 1973. Tunnel valleys, glacial surges, and subglacial hydrology of the Superior lobe, Minnesota. Geol. Soc. Am. Mem. 136, 251276.
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