Results 61 to 70 of about 215 (158)
QuaternaryLakes are threatened by contemporary climate change and human activities. Paleohydrological records provide important evidence for developing scenarios for future changes in the availability of freshwater resources.
Michel Magny +9 more
doaj +1 more source
Late Holocene tundra fires and linkages to climate and vegetation in Northern Alaska
Arctic ScienceCharcoal particles in lake sediments can reveal past fires and linkages to climate and vegetation change. We use analyses of charcoal accumulation rates from two lakes on the Alaskan North Slope to reconstruct past fire activity, and charcoal morphology ...
Lee Frank-DePue, Melissa L. Chipman
doaj +1 more source
De la déglaciation à l’agriculture moderne :histoire environnementale du sud du Groenland
Les Nouvelles de l’Archéologie, 2015 Palaeoenvironmentalists from the Chrono-environment laboratory in Besançon have been working in Greenland since 2006. The Study area is located in southern Greenland, within the Norse Eastern settlement occupied from 986 to 1450 cal. BC.
Emilie Gauthier +6 more
doaj +1 more source
A model of the origins and development of Aleut
Quaternary Environments and HumansIt has long been thought that Unangam Tunuu (Aleut) must have undergone substantial language contact at some point, given its divergent lexicon, features seemingly shared with Dene languages, and a single feature shared with Eyak, Tlingit, and Haida.
Anna Berge, Ben Potter, Jason Rogers
doaj +1 more source
The Holocene History of Nares Strait: Transition from Glacial Bay to Arctic-Atlantic Throughflow [PDF]
Oceanography, 2011 Retreat of glacier ice from Nares Strait and other straits in the Canadian Arctic Archipelago after the end of the last Ice Age initiated an important connection between the Arctic and the North Atlantic Oceans, allowing development of modern ocean ...
Anne E. Jennings +5 more
doaj
Simulating the Holocene evolution of Ryder Glacier, North Greenland [PDF]
The CryosphereThe Greenland Ice Sheet's negative mass balance is driven by a sensitivity to a warming atmosphere and ocean. The fidelity of ice-sheet models in accounting for ice–ocean interaction is inherently uncertain and often constrained against recent ...
J. Barnett +15 more
doaj +1 more source
An early Neoglacial moraine at Sanddalen, NE Greenland
Bulletin of the Geological Society of DenmarkThe Greenland Ice Sheet experienced a minimum ice volume phase in the middle Holocene. The timing and footprint of this minimum ice configuration remain poorly constrained. This minimum configuration, along with ice-sheet recession into and re-growth out of this minimum ice phase, provide critical constraints of the ice sheet’s response to Holocene ...
Jason P. Briner, Ole Bennike
openaire +1 more source
The status of the Neoglacial in western Greenland
Rapport Grønlands Geologiske Undersøgelse, 1980 The evidence relating to the Neoglacial history of the western sector of the Greenland lee Sheet is critically examined. It is concluded that glacierisation began to increase about 3000-3500 B.P. from a significantiy smaller extent than at present, but that in general this does not appear to have reached its maximum until the recent post-1000 B.
openaire +2 more sources
Holocene glacier variability and Neoglacial hydroclimate at Ålfotbreen, western Norway
Quaternary Science Reviews, 2016 AbstractGlaciers and small ice caps respond rapidly to climate perturbations (mainly winter precipitation, and summer temperature), and the mass-balance of glaciers located in western Norway is governed mainly by winter precipitation (Pw). Records of past Pw can offer important insight into long-term changes in atmospheric circulation, but few proxies ...
Gjerde, Marthe +4 more
openaire +3 more sources
Neoglacial to Recent Glacier Fluctuations on the Volcano Popocatépetl, Mexico [PDF]
Journal of Glaciology, 1981 AbstractNeoglacial to historic and recent fluctuations of the firn field and one glacier on Popocatépetl, Mexico, include advance prior to 1519 to possible mid-Neoglaciation stadial position on gentle, north flanks at 4 150 m, then retreat up-valley to 4 335 m by 1906, and to 4 435 m by 1920 at 7 m/year.
openaire +1 more source