Results 11 to 20 of about 2,560,774 (293)

Potential subglacial lake locations and meltwater drainage pathways beneath the Antarctic and Greenland ice sheets [PDF]

open access: yesThe Cryosphere, 2013
We use the Shreve hydraulic potential equation as a simplified approach to investigate potential subglacial lake locations and meltwater drainage pathways beneath the Antarctic and Greenland ice sheets. We validate the method by demonstrating its ability
S. J. Livingstone   +3 more
doaj   +3 more sources

Ice sheet extent and early deglacial history of the southwestern sector of the Greenland ice sheet [PDF]

open access: yes, 2009
The offshore and coastal geomorphology of southwest Greenland records evidence for the advance and decay of the Greenland Ice Sheet during the Last Glacial Maximum.
Long, A.J.   +6 more
core   +9 more sources

Antarctic ice sheet and oceanographic response to eccentricity forcing during the early Miocene [PDF]

open access: yesClimate of the Past, 2011
Stable isotope records of benthic foraminifera from ODP Site 1264 in the southeastern Atlantic Ocean are presented which resolve the latest Oligocene to early Miocene (~24–19 Ma) climate changes at high temporal resolution (<3 kyr).
D. Liebrand   +5 more
doaj   +4 more sources

Pliocene Ice Sheet Modelling Intercomparison Project (PLISMIP) – experimental design [PDF]

open access: yesGeoscientific Model Development, 2012
During the mid-Pliocene warm period (3.264 to 3.025 million years ago), global mean temperature was similar to that predicted for the next century and atmospheric carbon dioxide concentrations were slightly higher than today.
A. M. Dolan   +4 more
doaj   +1 more source

Effect of an orientation-dependent non-linear grain fluidity on bulk directional enhancement factors

open access: yesJournal of Glaciology, 2021
Bulk directional enhancement factors are determined for axisymmetric (girdle and single-maximum) orientation fabrics using a transversely isotropic grain rheology with an orientation-dependent non-linear grain fluidity.
Nicholas M. Rathmann   +4 more
doaj   +1 more source

Geology datasets in North America, Greenland and surrounding areas for use with ice sheet models [PDF]

open access: yesEarth System Science Data, 2019
The ice–substrate interface is an important boundary condition for ice sheet modelling. The substrate affects the ice sheet by allowing sliding through sediment deformation and accommodating the storage and drainage of subglacial water.
E. J. Gowan   +3 more
doaj   +1 more source

Ice-sheet configuration in the CMIP5/PMIP3 Last Glacial Maximum experiments [PDF]

open access: yesGeoscientific Model Development, 2015
We describe the creation of a data set describing changes related to the presence of ice sheets, including ice-sheet extent and height, ice-shelf extent, and the distribution and elevation of ice-free land at the Last Glacial Maximum (LGM), which were
A. Abe-Ouchi   +10 more
doaj   +1 more source

ATAT 1.1, the Automated Timing Accordance Tool for comparing ice-sheet model output with geochronological data [PDF]

open access: yesGeoscientific Model Development, 2019
Earth's extant ice sheets are of great societal importance given their ongoing and potential future contributions to sea-level rise. Numerical models of ice sheets are designed to simulate ice-sheet behaviour in response to climate changes but to be ...
J. C. Ely   +3 more
doaj   +1 more source

Bed topography and marine ice-sheet stability

open access: yesJournal of Glaciology, 2022
This paper examines the effect of basal topography and strength on the grounding-line position, flux and stability of rapidly-sliding ice streams.
Olga V. Sergienko, Duncan J. Wingham
doaj   +1 more source

Modeling the Antarctic ice sheet [PDF]

open access: yesAnnals of Glaciology, 1997
A three-dimensional (3-D), high-resolution, non-linearly viscous, non-isothermal ice-sheet model is employed to calculate the “present-day” equilibrium regime of the Antarctic ice sheet and its evolution during the last glacial cycle.
Mikhail Verbitsky, Barry Saltzman
openaire   +1 more source

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