Zobrazeno 1 - 10
of 167
pro vyhledávání: '"R T Walker"'
Publikováno v:
Geophysical Journal International. 230:1612-1629
SUMMARY The Main Köpetdag Fault (MKDF) is a predominantly right-lateral strike-slip fault that dissects the northern edge of the Köpetdag mountains of Turkmenistan and Iran. The fault represents the northernmost expression of deformation from the A
Publikováno v:
The Cryosphere, Vol 10, Iss 4, Pp 1381-1393 (2016)
The growth and drainage of active subglacial lakes in Antarctica has previously been inferred from analysis of ice surface altimetry data. We use a subglacial hydrology model applied to a synthetic Antarctic ice stream to examine internal controls on
Externí odkaz:
https://doaj.org/article/446b14fe52d145e99fb18359ca8f3370
Autor:
C.‐H. Tsai, K. Abdrakhmatov, A. Mukambayev, A. J. Elliott, J. R. Elliott, C. Grützner, E. J. Rhodes, A. H. Ivester, R. T. Walker, R. Wilkinson
Publikováno v:
Tectonics. 41
The study of surface ruptures is key to understanding the earthquake occurrence of faults especially in the absence of historical events. We present a detailed analysis of geomorphic displacements along the Dzhungarian Fault, which straddles the bord
Autor:
Keith W. Nicholls, David M. Holland, Knut Christianson, Jacob I. Walter, R. T. Walker, Timothy H. Dixon, Denise Holland, Byron R. Parizek, Irena Vaňková, M. Jeffrey Mei, Denis Voytenko
Publikováno v:
Oceanography (Wash D C)
Oceanography, Vol 29, Iss 4, Pp 46-61 (2016)
Oceanography, Vol 29, Iss 4, Pp 46-61 (2016)
Calving of glacial ice into the ocean from the Greenland Ice Sheet is an important component of global sea level rise. The calving process itself is relatively poorly observed, understood, and modeled; as such, it represents a bottleneck in improving
Autor:
Christine F. Dow, Beata Csatho, Greg Babonis, Mathieu Morlighem, Mauro A. Werder, R. T. Walker, Sophie Nowicki
Publikováno v:
J Geophys Res Earth Surf
Recovery Ice Stream has a substantial number of active subglacial lakes that are observed, with satellite altimetry, to grow and drain over multiple years. These lakes store and release water that could be important for controlling the velocity of th
Publikováno v:
Frontiers in Earth Science, Vol 5 (2017)
We develop a viscous model of plate bending suitable for studying ice-sheet flexure due to subglacial lake filling and draining, and apply this model to determine the area of ice-sheet uplift surrounding a subglacial lake. The choice of a viscous mod
Autor:
Huw J. Horgan, B. R. Parizek, Sridhar Anandakrishnan, Knut Christianson, R. T. Walker, Atsu Muto, Richard B. Alley, David Pollard
Publikováno v:
Annual Review of Earth and Planetary Sciences. 43:207-231
Ocean-ice interactions have exerted primary control on the Antarctic Ice Sheet and parts of the Greenland Ice Sheet, and will continue to do so in the near future, especially through melting of ice shelves and calving cliffs. Retreat in response to i
Autor:
A. A. Stern, R. T. Walker, Knut Christianson, Denis Voytenko, Timothy H. Dixon, David M. Holland
Publikováno v:
Journal of Glaciology. 61:301-308
We used a terrestrial radar interferometer (TRI) at Helheim Glacier, Greenland, in August 2013, to study the effects of tidal forcing on the terminal zone of this tidewater glacier. During our study period, the glacier velocity was up to 25 m d–1.
Autor:
R. T. Walker
Publikováno v:
Nature Geoscience. 11:223-224
A comprehensive assessment of grounding-line migration rates around Antarctica, covering a third of the coast, suggests retreat in considerable portions of the continent, beyond the rates expected from adjustment following the Last Glacial Maximum.
Autor:
Sophie Nowicki, Constantine Khroulev, Tatsuru Sato, Mathieu Morlighem, Ralf Greve, Charles S. Jackson, Hyeungu Choi, B. R. Parizek, Jesse V. Johnson, Wei Li Wang, Robert Bindschadler, Glen Granzow, Eric Rignot, Eric Larour, Fuyuki Saito, Maria A. Martin, Ute Christina Herzfeld, David Pollard, Ayako Abe-Ouchi, William H. Lipscomb, R. T. Walker, Diandong Ren, Helene Seroussi, James L. Fastook, Kunio Takahashi, Gail Gutowski, Stephen Price, Hakime Seddik, Anders Levermann, Andy Aschwanden, Ed Bueler
Publikováno v:
Journal of Geophysical Research: Earth Surface. 118:1002-1024
Atmospheric, oceanic, and subglacial forcing scenarios from the Sea-level Response to Ice Sheet Evolution (SeaRISE) project are applied to six three-dimensional thermomechanical ice-sheet models to assess Antarctic ice sheet sensitivity over a 500 ye