Results 21 to 30 of about 8,171 (221)

PISM-LakeCC: Implementing an adaptive proglacial lake boundary in an ice sheet model [PDF]

open access: yesThe Cryosphere, 2022
During the Late Pleistocene and Holocene retreat of paleo-ice sheets in North America and Europe, vast proglacial lakes existed along the land terminating margins.
S. Hinck   +6 more
doaj   +1 more source

Ice Streams of the Laurentide Ice Sheet [PDF]

open access: yesGéographie physique et Quaternaire, 2006
Ice streams had a major influence on the configuration and the stability of the Laurentide Ice Sheet. Their identification is crucial for an understanding of ice sheet behaviour and their importance is reflected by the recent increase in paleo-ice stream research.
Winsborrow, Monica C.M.   +2 more
openaire   +2 more sources

Early Holocene Laurentide Ice Sheet Retreat Influenced Summer Atmospheric Circulation in Baffin Bay

open access: yesGeophysical Research Letters, 2023
Changes in ice‐sheet size impact atmospheric circulation, a phenomenon documented by models but constrained by few paleoclimate records. We present sub‐centennial‐scale records of summer temperature and summer precipitation hydrogen isotope ratios (δ2H ...
Elizabeth K. Thomas   +11 more
doaj   +1 more source

Ground ice, organic carbon and soluble cations in tundra permafrost soils and sediments near a Laurentide ice divide in the Slave Geological Province, Northwest Territories, Canada [PDF]

open access: yesThe Cryosphere, 2020
The central Slave Geological Province is situated 450–650 km from the presumed spreading centre of the Keewatin Dome of the Laurentide Ice Sheet, and it differs from the western Canadian Arctic, where recent thaw-induced landscape changes in ...
R. Subedi   +3 more
doaj   +1 more source

Ice stream activity scaled to ice sheet volume during Laurentide Ice Sheet deglaciation [PDF]

open access: yesNature, 2016
The contribution of the Greenland and West Antarctic ice sheets to sea level has increased in recent decades, largely owing to the thinning and retreat of outlet glaciers and ice streams. This dynamic loss is a serious concern, with some modelling studies suggesting that the collapse of a major ice sheet could be imminent or potentially underway in ...
Stokes, C.R.   +3 more
openaire   +4 more sources

The impact of different glacial boundary conditions on atmospheric dynamics and precipitation in the North Atlantic region [PDF]

open access: yesClimate of the Past, 2012
Using a highly resolved atmospheric general circulation model, the impact of different glacial boundary conditions on precipitation and atmospheric dynamics in the North Atlantic region is investigated.
D. Hofer   +3 more
doaj   +1 more source

Enigmatic Eastern Laurentide Ice Sheet deglaciation [PDF]

open access: yesEos, Transactions American Geophysical Union, 2006
The retreat of the Laurentide Ice Sheet at the end of the last ice age represents a dramatic sequence of environmental change that is evident in geological records across North America. The details of when, where, how, and why the Laurentide Ice Sheet collapsed are critical to understanding ocean‐atmosphere‐ice dynamics during this period of ...
Dorothy Peteet   +2 more
openaire   +1 more source

Ice streams in the Laurentide Ice Sheet: Identification, characteristics and comparison to modern ice sheets [PDF]

open access: yesEarth-Science Reviews, 2015
AbstractThis paper presents a comprehensive review and synthesis of ice streams in the Laurentide Ice Sheet (LIS) based on a new mapping inventory that includes previously hypothesised ice streams and includes a concerted effort to search for others from across the entire ice sheet bed. The inventory includes 117 ice streams, which have been identified
Margold, Martin   +2 more
openaire   +2 more sources

Holocene lowering of the Laurentide ice sheet affects North Atlantic gyre circulation and climate [PDF]

open access: yes, 2017
The Laurentide ice sheet, which covered Canada during glacial periods, had a major influence on atmospheric circulation and surface climate, but its role in climate during the early Holocene (9–7 ka), when it was thinner and confined around Hudson Bay ...
Gregoire, LJ   +4 more
core   +2 more sources

The southern Laurentide Ice Sheet [PDF]

open access: yes, 2003
Publisher Summary This chapter discusses the advances in the understanding of the southern Laurentide Ice Sheet (LIS) and its deposits since the publication of the Quaternary of the United States in 1965. The late Wisconsin southern LIS consists of thin, gently sloping lobes with low-driving stresses.
David M. Mickelson, Patrick M. Colgan
openaire   +1 more source

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