Landscape evolution under the southern Laurentide Ice Sheet. [PDF]
Sci Adv, 2021 Ancient glaciated landscapes reveal interactions among ice dynamics, bed composition, and preglacial river networks.
Naylor S +3 more
europepmc +4 more sources
The role of basal hydrology in the surging of the Laurentide Ice Sheet [PDF]
Climate of the Past, 2016 We use the Glimmer ice sheet model to simulate periodic surges over the Laurentide Ice Sheet during the Last Glacial Maximum. In contrast to previous studies we use the depth of water at the base of the ice sheet as the switch for these surges.
W. H. G. Roberts +2 more
doaj +7 more sources
Simulating the Laurentide Ice Sheet of the Last Glacial Maximum [PDF]
The Cryosphere, 2023 In the last decades, great effort has been made to reconstruct the Laurentide Ice Sheet (LIS) during the Last Glacial Maximum (LGM; ca. 21 000 years before present, 21 kyr ago).
D. Moreno-Parada +11 more
doaj +5 more sources
Sea-level records from the U.S. mid-Atlantic constrain Laurentide Ice Sheet extent during Marine Isotope Stage 3 [PDF]
Nature Communications, 2017 Surprisingly high Pleistocene sea-level markers on the Virginia and North Carolina shoreline are inconsistent with models of Laurentide ice sheet volume during Marine Isotope Stage 3. Here, Picoet al.
T Pico, J. R. Creveling, J. X. Mitrovica
doaj +2 more sources
Subsurface ocean warming preceded Heinrich Events [PDF]
Nature Communications, 2022 The mechanism driving past Laurentide Ice-Sheet instabilities remains elusive Here, the authors present a sediment record from the subpolar western North Atlantic and show that massive warming of the upper interior ocean was the likely trigger for ...
Lars Max +4 more
doaj +2 more sources
Arctic warming induced by the Laurentide Ice Sheet topography [PDF]
Climate of the Past, 2018 It is well known that ice sheet–climate feedbacks are essential for realistically simulating the spatiotemporal evolution of continental ice sheets over glacial–interglacial cycles.
J. Liakka, M. Lofverstrom
doaj +3 more sources
The Sangamonian Stage and the Laurentide Ice Sheet [PDF]
Géographie physique et Quaternaire, 1987 This review of the most recent studies (up to June 1986) dealing with the Sangamonian in some key areas clearly indicates that, as yet, there is no definitive answer to the question : "When did the ice which eventually became the Laurentide Ice Sheet ...
St-Onge, Denis A.
core +3 more sources
A mechanism for reconciling the synchronisation of Heinrich events and Dansgaard-Oeschger cycles [PDF]
Nature CommunicationsThe evolution of the northern hemispheric climate during the last glacial period was beset by quasi-episodic iceberg discharge events from the Laurentide ice sheet, known as Heinrich events (HEs). The paleo record places most HEs into the cold stadial of
Clemens Schannwell +3 more
doaj +2 more sources
Pre-LGM Northern Hemisphere ice sheet topography [PDF]
Climate of the Past, 2013 We here reconstruct the paleotopography of Northern Hemisphere ice sheets during the glacial maxima of marine isotope stages (MIS) 5b and 4.We employ a combined approach, blending geologically based reconstruction and numerical modeling, to arrive at ...
J. Kleman +4 more
doaj +3 more sources
Assessing the impact of Laurentide Ice Sheet topography on glacial climate [PDF]
Climate of the Past, 2014 Simulations of past climates require altered boundary conditions to account for known shifts in the Earth system. For the Last Glacial Maximum (LGM) and subsequent deglaciation, the existence of large Northern Hemisphere ice sheets caused profound ...
D. J. Ullman +4 more
doaj +4 more sources