Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/7732
DC Field | Value | Language |
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dc.contributor.authorall | Roberts, J. L.; Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division, Hobart, Tasmania, Australia and Antarctic Climate and Ecosystems Cooperative Research Centre, Private Bag 80, Hobart, Tasmania 7001, Australia | en |
dc.contributor.authorall | Warner, R. C.; Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division, Hobart, Tasmania, Australia and Antarctic Climate and Ecosystems Cooperative Research Centre, Private Bag 80, Hobart, Tasmania 7001, Australia | en |
dc.contributor.authorall | Young, D.; Institute of Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas, USA | en |
dc.contributor.authorall | Wright, A.; School of GeoSciences, University of Edinburgh Edinburgh, Scotland, UK | en |
dc.contributor.authorall | van Ommen, T. D.; Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division, Hobart, Tasmania, Australia and Antarctic Climate and Ecosystems Cooperative Research Centre, Private Bag 80, Hobart, Tasmania 7001, Australia | en |
dc.contributor.authorall | Blankenship, D. D.; Institute of Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas, USA | en |
dc.contributor.authorall | Siegert, M.; School of GeoSciences, University of Edinburgh Edinburgh, Scotland, UK | en |
dc.contributor.authorall | Young, N. W.; Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division, Hobart, Tasmania, Australia and Antarctic Climate and Ecosystems Cooperative Research Centre, Private Bag 80, Hobart, Tasmania 7001, Australia | en |
dc.contributor.authorall | Tabacco, I. E.; Geofisica, Universita di Milano, Milan, Italy | en |
dc.contributor.authorall | Forieri, A.; Geofisica, Universita di Milano, Milan, Italy | en |
dc.contributor.authorall | Passerini, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.authorall | Zirizzotti, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.authorall | Frezzotti, M.; Agenzia nazionale per le nuove tecnologie, l’energia e lo sviluppo economico sostenibile, Rome, Italy | en |
dc.date.accessioned | 2012-02-16T10:11:30Z | en |
dc.date.available | 2012-02-16T10:11:30Z | en |
dc.date.issued | 2011-07-13 | en |
dc.identifier.uri | http://hdl.handle.net/2122/7732 | en |
dc.description.abstract | Ice thickness data over much of East Antarctica are sparse and irregularly distributed. This poses difficulties for reconstructing the homogeneous coverage needed to properly assess underlying sub-glacial morphology and fundamental geometric constraints on sea level rise. Here we introduce a new physically-based ice thickness interpolation scheme and apply this to existing ice thickness data in the Aurora Subglacial Basin region. The skill and robustness of the new reconstruction is demonstrated by comparison with new data from the ICECAP project. The interpolated morphology shows an extensive marine-based ice sheet, with considerably more area below sea-level than shown by prior studies. It also shows deep features connecting the coastal grounding zone with the deepest regions in the interior. This has implications for ice sheet response to a warming ocean and underscores the importance of obtaining additional high resolution data in these marginal zones for modelling ice sheet evolution. | en |
dc.language.iso | English | en |
dc.publisher.name | Copernicus Gesellschaft GMBH | en |
dc.relation.ispartof | The Cryosphere | en |
dc.relation.ispartofseries | 3/5 (2011) | en |
dc.subject | Ice | en |
dc.subject | Cryosphere | en |
dc.subject | RES systems | en |
dc.subject | Ice thickness | en |
dc.title | Refined broad-scale sub-glacial morphology of Aurora Subglacial Basin, East Antarctica derived by an ice-dynamics-based interpolation scheme | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 551-560 | en |
dc.identifier.URL | http://www.the-cryosphere.net/5/551/2011/ | en |
dc.subject.INGV | 02. Cryosphere::02.02. Glaciers::02.02.04. Ice | en |
dc.identifier.doi | 10.5194/tc-5-551-2011 | en |
dc.relation.references | Allison, I., Alley, R. B., Fricker, H. A., Thomas, R. H., and Warner, R.: Ice sheet mass balance and sea level, Antarct. Sci., 21, 413– 426, doi:10.1017/S0954102009990137, 2009. Bamber, J. L., Gomez-Dans, J. L., and Griggs, J. A.: A new 1 km digital elevation model of the Antarctic derived from combined satellite radar and laser data - Part 1: Data and methods, The Cryosphere, 3, 101–111, doi:10.5194/tc-3-101-2009, 2009. Blankenship, D., Morse, D.,Finn, C., Bell, R., Peters, M., Kempf, S., Hodge, S., Studinger, M., Behrendt, J., and Brozena, J.: Geological 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: The West Antarctic Ice Sheet: Behavior and Environment, Antarctic Research Series, edited by: Alley, R. and Bindschadler, R., 77, 105– 121, American Geophysical Union, Washington, D.C., 2001. Holt, J., Blankenship, D., Morse, D., Young, D., Peters, M., Kempf, S., Richter, T., Vaughan, D., and Corr, H.: New boundary conditions for the West Antarctic ice sheet: Subglacial topography of the Thwaites and Smith Glacier catchments, Geophys. Res. Lett., 33, L09502, doi:10.1029/2005GL025561, 2006. Le Brocq, A., Payne, A., and Siegert, M.: West Antarctic balance calculations: Impact of flux-routing algorithm, smoothing algorithm and topography, Comput. Geosci., 32,, 1780–1795, 2006. Lythe, M. B., Vaughan, D. G., and the BEDMAP Consortium: BEDMAP: A new ice thickness and subglacial topographic model of Antarctica, J. Geophys. Res., 106, 11335–11351, 2001. Mercer, J.: West Antarctic ice sheet and CO2 greenhouse effect: a threat of disaster, Nature, 271, 312–325, 1978. Peters, M., Blankenship, D., and Morse, D.: Analysis techniques for coherent airborne radar sounding: Application to West Antarctic ice streams, J. Geophys. Res., 110, B06303, doi:10.1029/2004JB003222, 2005. Pettit, E. and Waddington, E.: Ice flow at low deviatoric stress, J. Glaciol., 49, 359–369, 2003. Pritchard, H., Arthern, R., Vaughan, D. G., and Edwards, L.: Extensive dynamic thinning on the margins of the Greenland and Antarctic ice sheets, Nature, 461, 971–975, doi:10.1038/nature08471, 2009. Siegert, M.: Antarctic subglacial topography and ice sheet evolution, Earth Surf. Proc. Land., 33, 646–660, doi:10.1002/esp.1670, 2008. Soille, P., Vogt., J., and Colombo, R.: Carving and adaptive drainage enforcement of grid digital elevation models,Water Resour. Res., 39(13), doi:10.1029/2002WR001879, 2003. Testut, L., Hurd, R., Coleman, R., Fr´ed´erique, R., and Legr´esy, B.: Comparison between computed balance velocities and GPS measurements in the Lambert Glacier basin, East Antarctica, Ann. Glaciol., 37, 337–343, 2003. Thomas, R.: The dynamics of marine ice sheets, J. Glaciol., 24, 167–177, 1979. Urbini, S., Cafarella, L., Zirizzotti, A., Tabacco, I., Boltari, C., Baskaradas, J., and Young, N.: RES data analysis on the Shackleton Ice Shelf, Ann. Geophys-Italy, 53, 79–87, doi:10.4401/ag- 4563, 2010. van de Berg, W. J., van den Broeke, M. R., Reijmer, C. H., and van Meijgaard, E.: Reassessment of the Antarctic surface mass balance using calibrated ou tput of a regional atmospheric climate model, J. Geophys. Res., 111, doi:10.1029/2005JD006495, 2006. Velicogna, I.: Increasing rates of ice mass loss from the Greenland and Antarctic ice sheets revealed by GRACE, Geophys. Res. Lett., 36, doi:10.1029/2009GL040222, 2009. Warner, R. C. and Budd, W. F.: Derivation of ice thickness and bedrock topography in data-gap regions over Antarctica, Ann. Glaciol., 31, 191–197, 2000. Weertman, J.: Stability of the junction of an ice sheet and an ice shelf, J. Glaciol., 13, 3–11, 1974. Wright, A., Young, D., Roberts, J., Dowdeswell, J., Bamber, J., Young, N., LeBrocq, A.,Warner, R., Payne, A., Blankenship, D., van Ommen, T., and Siegert, M.: Evidence for a hydrological connection between the ice divide and ice sheet margin in the Aurora Subglacial Basin sector of East Antarctica, submitted to J. Geophys. Res-Earth, 2011. Young, D., Wright, A., Roberts, J., Warner, R., Young, N., Greenbaum, J., Schroeder, D., Holt, J., Sugden, D., Blankenship, D., van Ommen, T., and Siegert, M.: Ice-covered fjords indicate a dynamic East Antarctic Ice Sheet margin in the Aurora Subglacial Basin, Nature, 474, 72–75, doi:10.1038/nature10114, 2011. Young, N., Goodwin, I., Hazelton, N., and Thwaites, R.: Measured velocities and ice flow in Wilkes Land, Antarctica, Ann. Glaciol., 12, 192–197, 1989a. Young, N., Malcolm, P., Mantell, P., and McGibbon, E.: Velocity and surface-lowering measurements on Law Dome, Antarctica, Ann. Glaciol., 12, 220, 1989b. | en |
dc.description.obiettivoSpecifico | 3.8. Geofisica per l'ambiente | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.relation.issn | 1994-0416 | en |
dc.relation.eissn | 1994-0424 | en |
dc.contributor.author | Roberts, J. L. | en |
dc.contributor.author | Warner, R. C. | en |
dc.contributor.author | Young, D. | en |
dc.contributor.author | Wright, A. | en |
dc.contributor.author | van Ommen, T. D. | en |
dc.contributor.author | Blankenship, D. D. | en |
dc.contributor.author | Siegert, M. | en |
dc.contributor.author | Young, N. W. | en |
dc.contributor.author | Tabacco, I. E. | en |
dc.contributor.author | Forieri, A. | en |
dc.contributor.author | Passerini, A. | en |
dc.contributor.author | Zirizzotti, A. | en |
dc.contributor.author | Frezzotti, M. | en |
dc.contributor.department | Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division, Hobart, Tasmania, Australia and Antarctic Climate and Ecosystems Cooperative Research Centre, Private Bag 80, Hobart, Tasmania 7001, Australia | en |
dc.contributor.department | Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division, Hobart, Tasmania, Australia and Antarctic Climate and Ecosystems Cooperative Research Centre, Private Bag 80, Hobart, Tasmania 7001, Australia | en |
dc.contributor.department | Institute of Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas, USA | en |
dc.contributor.department | School of GeoSciences, University of Edinburgh Edinburgh, Scotland, UK | en |
dc.contributor.department | Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division, Hobart, Tasmania, Australia and Antarctic Climate and Ecosystems Cooperative Research Centre, Private Bag 80, Hobart, Tasmania 7001, Australia | en |
dc.contributor.department | Institute of Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas, USA | en |
dc.contributor.department | School of GeoSciences, University of Edinburgh Edinburgh, Scotland, UK | en |
dc.contributor.department | Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division, Hobart, Tasmania, Australia and Antarctic Climate and Ecosystems Cooperative Research Centre, Private Bag 80, Hobart, Tasmania 7001, Australia | en |
dc.contributor.department | Geofisica, Universita di Milano, Milan, Italy | en |
dc.contributor.department | Geofisica, Universita di Milano, Milan, Italy | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.department | Agenzia nazionale per le nuove tecnologie, l’energia e lo sviluppo economico sostenibile, Rome, Italy | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division, Hobart, Tasmania, Australia and Antarctic Climate and Ecosystems Cooperative Research Centre, Private Bag 80, Hobart, Tasmania 7001, Australia | - |
crisitem.author.dept | Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division, Hobart, Tasmania, Australia and Antarctic Climate and Ecosystems Cooperative Research Centre, Private Bag 80, Hobart, Tasmania 7001, Australia | - |
crisitem.author.dept | Institute for Geophysics, University of Texas at Austin, USA | - |
crisitem.author.dept | School of GeoSciences, University of Edinburgh Edinburgh, Scotland, UK | - |
crisitem.author.dept | Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division, Hobart, Tasmania, Australia and Antarctic Climate and Ecosystems Cooperative Research Centre, Private Bag 80, Hobart, Tasmania 7001, Australia | - |
crisitem.author.dept | School of Geographical Sciences, University of Bristol, UK | - |
crisitem.author.dept | Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division, Hobart, Tasmania, Australia and Antarctic Climate and Ecosystems Cooperative Research Centre, Private Bag 80, Hobart, Tasmania 7001, Australia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.dept | ENEA-CRE, Casaccia, Rome, Italy | - |
crisitem.author.orcid | 0000-0001-7586-9219 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 02. Cryosphere | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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2011 Refined broad_Cryosphere.pdf | 2.06 MB | Adobe PDF | View/Open |
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