inscription

Portail d'information géographique

Résultats de la recherche (4 résultats)

Holocene chemical weathering, surface lowering and rock weakening rates on glacially eroded bedrock surfaces in an alpine periglacial environment, Jotunheimen, southern Norway

to previous research and other rock types in Scandinavia. The various indices, being affected in different ways by biochemical and biological mechanical weathering and micro-erosion, are regarded as complementary aids in the investigation of both the effects

Degrading mountain permafrost in southern Norway : spatial and temporal variability of mean ground temperatures, 1999–2009

permafrost, marginal permafrost and deep seasonal frost. Ongoing permafrost degradation is suggested both by direct temperature monitoring and indirect geophysical surveys. Increased snow depths and an increase in winter air temperatures appear to be the most

Characteristics of discontinuous permafrost based on ground temperature measurements and electrical resistivity tomography, Southern Yukon, Canada

in the spring imaged both deep seasonal frost and perennially frozen ground. The observations revealed the complexity of site conditions where permafrost is discontinuous and the utility of ERT, in combination with other methods, to investigate permafrost

Advective heat transport in frozen rock clefts : conceptual model, laboratory experiments and numerical simulation

. The timing and duration of water percolation both affect the ice-level change if initial aggradation and subsequent erosion are of the same order of magnitude. The surplus advected heat is absorbed by cleft ice loss and runoff from the cleft so