Exploration of Subsurface Antarctica Uncovering Past Changes and Modern Processes

About this book

Our appreciation of glaciological processes in Antarctica suffers from a lack of observations in regions where numerical models indicate the ice sheet to be susceptible to ocean and/or atmospheric warming. The solution lies in the use and development of glacier geophysics. In Exploration of Subsurface Antarctica we present a series of papers that demonstrate how geophysics can be deployed in Antarctica to comprehend: (1) boundary conditions that influence ice flow such as subglacial topography, the distribution of basal water and ice-sheet rheology; (2) phenomena that might affect ice-flow processes, such as complex internal ice-sheet structures and the proposition of large stores of hitherto unappreciated groundwater; and (3) how glacigenic sediments and formerly glaciated terrain on, and surrounding, the continent can inform us about past ice-sheet dynamics. Exploration of Subsurface Antarctica also takes a historical view on developments leading to current knowledge, examines active ice-sheet processes, and points the way forward on how geophysics can advance quantitative understanding of Antarctic ice-sheet behaviour.

Contents

Exploration of subsurface Antarctica: uncovering past changes and modern processes
      Siegert, M. J., Jamieson, S. S. R. & White, D.
A 60-year international history of Antarctic subglacial lake exploration
      Siegert, M. J.
Exploring the Recovery Lakes region and interior Dronning Maud Land, East Antarctica, with airborne gravity, magnetic and radar measurements
      Forsberg, R., Olesen, A. V., Ferraccioli, F., Jordan, T. A., Matsuoka, K., Zakrajsek, A., Ghidella, M. & Greenbaum, J. S.
Ice-flow reorganization within the East Antarctic Ice Sheet deep interior
      Beem, L. H., Cavitte, M. G. P., Blankenship, D. D., Carter, S. P., Young, D. A., Muldoon, G. R., Jackson, C. S. & Siegert, M. J.
Was South Georgia covered by an ice cap during the Last Glacial Maximum?
      White, D. A., Bennike, O., Melles, M., Berg, S. & Binnie, S. A.
The Gebra–Magia Complex: mass-transport processes reworking trough-mouth fans in the Central Bransfield Basin (Antarctica)
      Casas, D., García, M., Bohoyo, F., Maldonado, A. & Ercilla, G.
Bathymetry of Schirmacher lakes as a tool for geomorphological evolution studies
      Swain, A. K.
Heavy mineral assemblage of marine sediments as an indicator of provenance and east antarctic ice sheet fluctuations
      Pandey, M., Pant, N. C., Biswas, P., Shrivastava, P. K., Joshi, S. & Nagi, N.
Position and variability of complex structures in the central East Antarctic Ice Sheet
      Wrona, T., Wolovick, M. J., Ferraccioli, F., Corr, H., Jordan, T. & Siegert, M. J.
Summit of the East Antarctic Ice Sheet underlain by thick ice-crystal fabric layers linked to glacial–interglacial environmental change
      Wang, B., Sun, B., Martin, C., Ferraccioli, F., Steinhage, D., Cui, X. & Siegert, M. J.
Drilling project at Gamburtsev Subglacial Mountains, East Antarctica: recent progress and plans for the future
      Talalay, P., Sun, Y., Zhao, Y., Li, Y., Cao, P., Markov, A., Xu, H., Wang, R., Zhang, N., Fan, X., Yang, Y., Sysoev, M., Liu, Y. & Liu, Y.   
A deep subglacial embayment adjacent to the grounding line of Institute Ice Stream, West Antarctica
      Jeofry, H., Ross, N., Corr, H. F. J., Li, J., Gogineni, P. & Siegert, M. J.  
Ocean forced variability of Totten Glacier mass loss
      Roberts, J., Galton-fenzi, B. K., Paolo, F. S., Donnelly, C., Gwyther, D. E., Padman, L., Young, D., Warner, R., Greenbaum, J., Fricker, H. A., Payne, A. J., Cornford, S., Le Brocq, A., Van Ommen, T., Blankenship, D. & Siegert, M. J.  
Chemical characteristics of the ice cores obtained after the first unsealing of subglacial Lake Vostok
      Alekhina, I., Ekaykin, A., Moskvin, A. & Lipenkov, V.   
Antarctic subglacial groundwater: a concept paper on its measurement and potential influence on ice flow
      Siegert, M. J., Kulessa, B., Bougamont, M., Christoffersen, P., Key, K., Andersen, K. R., Booth, A. D. & Smith, A. M.   
Modern to Glacial age subglacial meltwater drainage at Law Dome, coastal East Antarctica from topography, sediments and jökulhlaup observations
      Goodwin, I. D., Roberts, J. L., Etheridge, D. M., Hellstrom, J., Moy, A. D., Ribo, M. & Smith, A. M.   
A new volcanic province: an inventory of subglacial volcanoes in West Antarctica
      Van Wyk De Vries, M., Bingham, R. G. & Hein, A. S.  

Index

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