Zobrazeno 1 - 10
of 514
pro vyhledávání: '"A. G. C. Graham"'
Autor:
K. A. Hogan, K. L. P. Warburton, A. G. C. Graham, J. A. Neufeld, D. R. Hewitt, J. A. Dowdeswell, R. D. Larter
Publikováno v:
The Cryosphere, Vol 17, Pp 2645-2664 (2023)
Improvements in the resolution of sea-floor mapping techniques have revealed extremely regular, sub-metre-scale ridge landforms produced by the tidal flexure of ice-shelf grounding lines as they retreated very rapidly (i.e. at rates of several kilome
Externí odkaz:
https://doaj.org/article/bfe705dfaee04880802c10530208f5a0
Sedimentary Signatures of Persistent Subglacial Meltwater Drainage From Thwaites Glacier, Antarctica
Autor:
A. P. Lepp, L. M. Simkins, J. B. Anderson, R. W. Clark, J. S. Wellner, C-D. Hillenbrand, J. A. Smith, A. A. Lehrmann, R. Totten, R. D. Larter, K. A. Hogan, F. O. Nitsche, A. G. C. Graham, L. Wacker
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
Subglacial meltwater drainage can enhance localized melting along grounding zones and beneath the ice shelves of marine-terminating glaciers. Efforts to constrain the evolution of subglacial hydrology and the resulting influence on ice stability in s
Externí odkaz:
https://doaj.org/article/9b0a3d0346e94846abaa0dff60ef0c58
Autor:
K. A. Hogan, R. D. Larter, A. G. C. Graham, R. Arthern, J. D. Kirkham, R. Totten Minzoni, T. A. Jordan, R. Clark, V. Fitzgerald, A. K. Wåhlin, J. B. Anderson, C.-D. Hillenbrand, F. O. Nitsche, L. Simkins, J. A. Smith, K. Gohl, J. E. Arndt, J. Hong, J. Wellner
Publikováno v:
The Cryosphere, Vol 14, Pp 2883-2908 (2020)
The geometry of the sea floor immediately beyond Antarctica's marine-terminating glaciers is a fundamental control on warm-water routing, but it also describes former topographic pinning points that have been important for ice-shelf buttressing. Unfo
Externí odkaz:
https://doaj.org/article/ab515f0918ec4c0580ff887da179c448
Autor:
T. A. Jordan, D. Porter, K. Tinto, R. Millan, A. Muto, K. Hogan, R. D. Larter, A. G. C. Graham, J. D. Paden
Publikováno v:
The Cryosphere, Vol 14, Pp 2869-2882 (2020)
Ice shelves play a critical role in the long-term stability of ice sheets through their buttressing effect. The underlying bathymetry and cavity thickness are key inputs for modelling future ice sheet evolution. However, direct observation of sub-ice
Externí odkaz:
https://doaj.org/article/9256381a687042128576c7153c2caf7b
Autor:
Oliver T. Bartlett, Steven J. Palmer, Dustin M. Schroeder, Emma J. MacKie, Timothy T. Barrows, Alastair G. C. Graham
Publikováno v:
Annals of Glaciology, Vol 61, Pp 46-57 (2020)
Airborne radio-echo sounding (RES) surveys are widely used to measure ice-sheet bed topography. Measuring bed topography as accurately and widely as possible is of critical importance to modelling ice dynamics and hence to constraining better future
Externí odkaz:
https://doaj.org/article/429e3d0e634345638764827fdf8398be
Autor:
James A. Smith, Alastair G. C. Graham, Alix L. Post, Claus-Dieter Hillenbrand, Philip J. Bart, Ross D. Powell
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-16 (2019)
The recent collapses of ice shelves in Antarctica due to warming make it essential to understand past ice shelf conditions and mechanisms. Here Smith and colleagues review the latest progress in deciphering the geological imprint of Antarctic ice she
Externí odkaz:
https://doaj.org/article/01d82cbf96164b04a4d292e3db699eec
Autor:
R. D. Larter, K. A. Hogan, C.-D. Hillenbrand, J. A. Smith, C. L. Batchelor, M. Cartigny, A. J. Tate, J. D. Kirkham, Z. A. Roseby, G. Kuhn, A. G. C. Graham, J. A. Dowdeswell
Publikováno v:
The Cryosphere, Vol 13, Pp 1583-1596 (2019)
Basal hydrological systems play an important role in controlling the dynamic behaviour of ice streams. Data showing their morphology and relationship to geological substrates beneath modern ice streams are, however, sparse and difficult to collect. W
Externí odkaz:
https://doaj.org/article/10084b80a80949f88c4c230be2de7609
Autor:
D. A. Hodgson, K. Hogan, J. M. Smith, J. A. Smith, C.-D. Hillenbrand, A. G. C. Graham, P. Fretwell, C. Allen, V. Peck, J.-E. Arndt, B. Dorschel, C. Hübscher, A. M. Smith, R. Larter
Publikováno v:
The Cryosphere, Vol 12, Pp 2383-2399 (2018)
The East Antarctic Ice Sheet discharges into the Weddell Sea via the Coats Land ice margin. We have used geophysical data to determine the changing ice-sheet configuration in this region through its last glacial advance and Holocene retreat and t
Externí odkaz:
https://doaj.org/article/6fb3275972d0416f9ca7ec2bd12bcb91
Autor:
D. Davies, R. G. Bingham, E. C. King, A. M. Smith, A. M. Brisbourne, M. Spagnolo, A. G. C. Graham, A. E. Hogg, D. G. Vaughan
Publikováno v:
The Cryosphere, Vol 12, Pp 1615-1628 (2018)
Projections of sea-level rise contributions from West Antarctica's dynamically thinning ice streams contain high uncertainty because some of the key processes involved are extremely challenging to observe. An especially poorly observed parameter i
Externí odkaz:
https://doaj.org/article/ed22f11b2f9b4dc2b9ce2e89bc91b2ff
Autor:
Kelly A. Hogan, Katarzyna L. P. Warburton, Alastair G. C. Graham, Jerome A. Neufeld, Duncan R. Hewitt, Julian A. Dowdeswell, Robert D. Larter
Improvements in the resolution of seafloor mapping techniques have revealed extremely regular, sub-meter scale ridge landforms produced by the tidal flexure of ice-shelf grounding lines as they retreated very rapidly (i.e., at rates of several kilome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f4ecc0240a266697fd8137f129fd3ae
https://tc.copernicus.org/articles/17/2645/2023/
https://tc.copernicus.org/articles/17/2645/2023/
