Results 11 to 20 of about 8,171 (221)

Oceanic δ13C Fingerprints Caused by Laurentice Ice Sheet Discharges: Model‐Data Comparison During Heinrich Event 4

open access: yesGeophysical Research Letters
This study investigates the sensitivity of the oceanic circulation and δ13C of the dissolved inorganic carbon to ice discharge events from the Laurentide ice sheet (LIS), using an isotope‐enabled and coupled climate–ice sheet model, and observations. The
Louise Abot   +3 more
doaj   +2 more sources

Deglaciation of the Laurentide Ice Sheet from the Last Glacial Maximum

open access: yesCuadernos de Investigación Geográfica, 2017
The last deglaciation of the Laurentide Ice Sheet (LIS) was associated with major reorganisations in the ocean-climate system and its retreat also represents a valuable analogue for understanding the rates and mechanisms of ice sheet collapse. This paper
Ch.R. Stokes
doaj   +4 more sources

The Middle Wisconsinan History of the Laurentide Ice Sheet [PDF]

open access: yesGéographie physique et Quaternaire, 1987
Evidence for Middle Wisconsinan ice limits and climates comes from sites scattered around the periphery of the Laurentide Ice domain and from the Hudson Bay Lowlands.
Dredge, Lynda A., Thorleifson, L. Harvey
core   +4 more sources

The collapse of the Cordilleran–Laurentide ice saddle and early opening of the Mackenzie Valley, Northwest Territories, Canada, constrained by 10Be exposure dating [PDF]

open access: yesThe Cryosphere, 2022
Deglaciation of the northwestern Laurentide Ice Sheet in the central Mackenzie Valley opened the northern portion of the deglacial Ice-Free Corridor between the Laurentide and Cordilleran ice sheets and a drainage route to the Arctic Ocean.
B. J. Stoker   +10 more
doaj   +1 more source

Sensitivity of Heinrich-type ice-sheet surge characteristics to boundary forcing perturbations [PDF]

open access: yesClimate of the Past, 2023
Heinrich-type ice-sheet surges are one of the prominent signals of glacial climate variability. They are characterised as abrupt, quasi-periodic episodes of ice-sheet instabilities during which large numbers of icebergs are released from the Laurentide ...
C. Schannwell   +3 more
doaj   +1 more source

Glacial geomorphology of the northwest Laurentide Ice Sheet on the northern Interior Plains and western Canadian Shield, Canada

open access: yesJournal of Maps, 2023
The majority of the Northwest Territories of mainland Canada was covered by the Laurentide Ice Sheet during the Last Glacial Maximum. The increasing coverage of high resolution remotely sensed data provides new opportunities to map the glacial ...
Helen E. Dulfer   +3 more
doaj   +1 more source

The impact of spatially varying ice sheet basal conditions on sliding at glacial time scales

open access: yesJournal of Glaciology, 2023
Spatially variable basal conditions are thought to govern how ice sheets behave at glacial time scales (>1000 years) and responsible for changes in dynamics between the core and peripheral regions of the Laurentide and Fennoscandian ice sheets.
Evan J. Gowan   +4 more
doaj   +1 more source

The glacial geomorphology of the Mackenzie Mountains region, Canada

open access: yesJournal of Maps, 2023
During the Last Glacial Maximum, the Mackenzie Mountains region was glaciated by three distinct ice sources; the Laurentide Ice Sheet, the Cordilleran Ice Sheet, and independent montane glaciers. Rapid ice sheet thinning of the Laurentide-Cordilleran ice
Benjamin J. Stoker   +2 more
doaj   +1 more source

Simulating the Early Holocene demise of the Laurentide Ice Sheet with BISICLES (public trunk revision 3298) [PDF]

open access: yesGeoscientific Model Development, 2020
Simulating the demise of the Laurentide Ice Sheet covering Hudson Bay in the Early Holocene (10–7 ka) is important for understanding the role of accelerated changes in ice sheet topography and melt in the 8.2 ka event, a century long ...
I. S. O. Matero   +3 more
doaj   +1 more source

Laurentide Ice Sheet basal temperatures during the last glacial cycle as inferred from borehole data [PDF]

open access: yesClimate of the Past, 2016
Thirteen temperature–depth profiles ( ≥  1500 m) measured in boreholes in eastern and central Canada were inverted to determine the ground surface temperature histories during and after the last glacial cycle.
C. Pickler, H. Beltrami, J.-C. Mareschal
doaj   +1 more source

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