Results 81 to 90 of about 14,168 (295)

A Statistical‐Process Hybridized Approach to Modeling Permafrost Distribution in a Boreal Wetland Ecosystem, Whatì, NT, Canada

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT High‐resolution mapping of permafrost in ecologically and topographically complex landscapes remains a major challenge. Existing models of permafrost extent often rely on equilibrium assumptions, which can misrepresent conditions in regions where permafrost persists largely due to ecosystem structure.
Philip P. Bonnaventure, Sophie MacLean, Nick C. Noad, Madeleine C. Garibaldi   +3 more
wiley   +1 more source

The Age and Origin of Block Deposits in the Victorian Alps, Australia

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Large periglacial block deposits are found in the mountains of southeastern Australia. Despite their widespread distribution, their mode of formation and age are poorly understood. These landforms hold considerable potential to shed light on the nature of cooling during glacial periods. In this paper we present a new study of block deposits in
Timothy T. Barrows, Michelle S. Worland, Julian Murton, Stephanie C. Mills, L. Keith Fifield   +4 more
wiley   +1 more source

Multianalytical provenance analysis of Eastern Ross Sea LGM till sediments (Antarctica): Petrography, geochronology, and thermochronology detrital data [PDF]

, 2017
In order to reveal provenance of detrital sediments supplied by West Antarctic Ice Sheet (WAIS), 19 glaciomarine cores of Last Glacial Maximum age were analyzed from Eastern Ross Sea and Sulzberger Bay.
Andreucci, Benedetta, Langone, Antonio, Perotti, Matteo, Talarico, Franco, Zattin, Massimiliano   +4 more
core   +2 more sources

Deciphering Freeze–Thaw Dynamics In Rockwalls: A Novel Approach for High Accuracy Regional‐Scale Modeling

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Using a large and novel array of instruments on five rockwalls in northern Gaspesia, their respective surface energy balances were calculated and their thermal regimes were measured and modeled to depths exceeding the seasonal frost penetration.
Tom Birien, Francis Gauthier
wiley   +1 more source

A comparison of glacier melt on debris-covered glaciers in the northern and southern Caucasus [PDF]

, 2011
The glacier coverage in the Caucasus Mountains underwent considerable changes during the last decades. In some regions, the observed reduction in glacier area is comparable to those in the European Alps and the extent of supra-glacial debris increased on
Hagg, Wilfried, Lambrecht, A., Lomidze, N., Mayer, C., Popovnin, V., Rezepkin, A., Svanadze, D.   +6 more
core   +1 more source

Geophysical evidence of multiple glacier advances in Lago Fagnano (54°S), southernmost Patagonia

Quaternary Science Reviews, 2010
The Island of Tierra del Fuego, at the southernmost extreme of Patagonia, is located in one of the most extensively glaciated areas of the Southern Hemisphere outside Antarctica during the late Pleistocene. The Lago Fagnano region, at w54 30 0 S and w68 W, has experienced several phases of glacier growth and retreat since the Last Glacial Maximum ...
Waldmann, Nicolas, Ariztegui, Daniel, Anselmetti, Flavio S., Coronato, Andrea Maria Josefa, Austin Jr., James A.   +4 more
openaire   +2 more sources

A pilot variational coupled reanalysis based on the CESAM climate model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Variational data assimilation of in‐situ and satellite ocean data and reanalysis atmospheric data into an intermediate complexity Earth system model is possible by adjusting the surface fluxes and internal model parameters. This pilot application requires nearly complete information on the atmospheric state for synchronization.
Armin Köhl, Iuliia Polkova, Guokun Lyu, Frank Lunkeit, Abhirup Banerjee, Silke Schubert, Detlef Stammer   +6 more
wiley   +1 more source

The Dominion Range Ice Core, Queen Maud Mountains, Antarctica - General Site and Core Characteristics with Implications [PDF]

, 2017
The Transantarctic Mountains of East Antarctica provide a new milieu for retrieval of ice-core records. We report here on the initial findings from the first of these records, the Dominion Range ice-core record.
Gow, Anthony J., Grootes, Pieter M., Lyons, W. Berry, Mayewski, Paul A., Meese, Debra A., Saltzman, Eric, Sowers, Todd, Spencer, Mary Jo, Twickler, Mark S., Watson, M. Scott   +9 more
core   +1 more source

Perception, history, and science: coherence or disparity in the timing of the Little Ice Age maximum in southeast Iceland? [PDF]

, 2005
In Iceland, studies that integrate local perceptions about the landscape with scientific evidence of change have been few. This article presents a case study from southeast Iceland that has two main objectives.
Dugmore, Andrew J., Mckinzey, Krista M., Ólafsdóttir, Rannveig   +2 more
core   +1 more source

Sustained rapid shrinkage of Yukon glaciers since the 1957–1958 International Geophysical Year

Geophysical Research Letters, 2010
Glaciers in the Yukon, NW Canada, lost 22% of their surface area during the 50 years following the 1957–58 International Geophysical Year, coincident with increases in average winter and summer air temperatures and decreases in winter precipitation. Scaling these results to ice volume change, we obtain a total mass loss of 406 ± 177 Gt, which accounts ...
N. E. Barrand, M. J. Sharp
openaire   +1 more source