ArcticOcean ice and climate: perspectives on a century of polar research
Action anthropique ; Arctique ; Climat polaire ; Climatologie ; Glace ; Glace de mer ; Glaciologie ; Géographie des régions polaires ; Interaction glace-atmosphère ; Océan Arctique ; Transfert énergétique de surface ; Zone froide
Large-scale ice-climate interactions are discussed for seasonal and longer time scales and potential human-induced impacts on the Arctic ice regime are noted. Although ice anomalies are pronounced on a regional scale, in response to atmospheric
L'océan Glacial-Arctique peut-il être déglacé naturellement ?
ArcticOcean ; Global change ; Ocean ; Polar region ; Sea ice ; Summer
Arctique océan ; Changement global ; Doucin ; Déglacement ; Eté ; Glace de mer ; Océan ; Région polaire
L'A. examine la possibilité de déglacement estival naturel de l'océan Glacial-Arctique, au cours des toutes prochaines décennies, ce qui permettrait la mise en route de courants commerciaux de 2 ou 3 mois,chaque année, sur cet océan. La question est
ArcticOcean;Arctic Region ; Bibliography ; Ecosystem ; Environment ; Global change ; Greenhouse effect ; Human impact ; Permafrost ; Pollution
This article aims to review critically various kinds of phenomenal records from the late 1980s, which are pertinent in the environmental change context. The account is restricted to the northern boreal zone and the Arctic.
Three central ArcticOcean sediment cores were sampled for percentage carbonate, number of foraminifera, and texture. These three parameters were used in spectral analyses to test the idea that the ice-covered ArcticOcean may respond to orbital
signal confirms that, in spite of ice feedback, the ArcticOcean has responded to orbital forcing in much the same manner as have ice-free oceans.
forcing in a different manner than has been indicated for lower latitude ice-free oceans. The record for two of the cores represents approximately 1 my, and the record for the third, approximately 400,000 yr. The 100,000-yr frequency is well represented
Effects of high-magnitude/low-frequency fluvial events generated by intense snowmelt or heavy rainfall in arctic periglacial environments in northern Swedish Lapland and northern Siberia
Arctic Region ; Asian part of Russia ; Cold area ; Comparative study ; Heavy rain ; Lapland ; Meltwater ; Periglacial features ; Pic discharge ; Sediment budget ; Sediment transport ; Siberia ; Sweden ; Watershed
The characteristics of these events in the arctic-oceanic Latnjavagge drainage basin in northern Swedish Lapland are analysed and compared with snowmelt and rainfall-induced runoff peaks in the Krasnaya river system in arctic northern Siberia
. The results from these both arctic periglacial environments underline the high importance of high-magnitude/low-frequency fluvial events for the total fluvial sediment budgets of periglacial fluvial sediments. Restricted sediment avaibility is in both arctic
Exposé des objectifs de l'Arctic Climate System Study. Etude des caractéristiques: structure et circulation de l'océan Arctique; glace de mer; interaction océan-atmosphère; cycle de l'eau douce dans la région arctique. Principales divisions du
programme: prévision des processus dans l'océan et dans les mers épicontinentales; biologie marine; dynamique de l'océan Arctique; glace de mer (Arctique et Antarctique); étude et contrôle du milieu abyssal; études sismiques abyssales; dynamique des grandes
Le climat de l'Océan Artcique : une présentation de nos connaissances actuelles d'après des études récentes. Les contrôles effectués sur le climat arctique résultant du cycle d'énergie annuel, des échanges à la surface de l'océan englacé, et de la
Deep-sea sediments recovered from 6 sites visited during the International Artic Ocean Expedition of 1991 were examined to determine sedimentation rates in the eastern Artic Ocean basin. The AA. determine low-field magnetic susceptibility
Water balance modelling of (Sub-)Arctic rivers and freshwater supply to the Barents Sea Basin
ArcticOcean ; Climatic change ; Cold area ; Finland ; Fresh water ; Modelling ; Ocean atmosphere interaction ; Pic discharge ; Stream ; Stream flow ; Subarctic zone ; Water balance
Arctique océan ; Bilan hydrologique ; Changement climatique ; Cours d'eau ; Débit de pointe ; Eau douce ; Ecoulement fluvial ; Finlande ; Interaction océan-atmosphère ; Mer de Barents ; Modélisation ; Zone froide ; Zone subarctique
Specific objectives were to : adjust an existing water balance model to the specific (Sub-)Arctic conditions found in the Tana and Usa River Basins, and assess the impact of climate change scenarios on the freshwater supply of these rivers
. These findings have far-reaching implications for Arctic climate studies, ocean circulation, sediment stratigraphy and the stability of circum-Arctic continental ice masses.
and adjacent downslope turbidite gullies. The glacial geology of surrounding areas suggests that an ice shelf probably flowed from the mouths of overdeepened glacial throughs in the Canadian Arctic Archipelago westward along the ABM and across the Chukchi
Borderland. This curved pathway indicates an obstruction to ice flow in the central Canada Basin. Evidence for glaciogenic features on the ABM corrobates suggestions that large ice volumes and extents existed in the Arctic during Pleistocene glacial periods
Recent progress in understanding marine-terminating Arctic outlet glacier response to climatic and oceanic forcing : Twenty years of rapid change
Air temperature ; Arctic Region ; Calving ; Climatic change ; Climatic warming ; Cryosphere ; Glacier ; Glacier dynamics ; Glacier mass balance ; Greenland ; Ice sheet ; Iceberg ; Meltwater ; Ocean atmosphere interaction ; Sea ice ; Space time
Années 1990-2010 ; Arctique ; Bilan de masse ; Calotte glaciaire ; Changement climatique ; Cryosphère ; Dynamique glaciaire ; Eau de fonte ; Espace-temps ; Glace de mer ; Glacier ; Groenland ; Iceberg ; Interaction océan-atmosphère ; Réchauffement
This paper reviews the substantial progress made in our understanding of the links between marine-terminating Arctic outlet glacier behaviour and the ocean-climate system during the past 20 years, when many ice masses have rapidly lost mass
-terminating Arctic outlet glacier response to climatic/oceanic forcing, and recommend directions for future research.
. Specifically, the AA. assess 3 primary climatic/oceanic controls on outlet glacier dynamics, namely air temperature, ocean temperature and sea ice concentrations, and discuss key linkages between them. They highlight key uncertainties surrounding marine