inscription
Portail d'information géographique

Résultats de la recherche (21 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Crystalline rocks ; Experimentation ; Freeze-thaw cycle ; Geophysics ; Granite ; Microstructure ; Porosity ; Rock mechanics ; Weathering
  • The results showed that, with small free samples, there was no apparent temperature difference between those on the surface and inside the blocks. Rock temperatures varied with those of freeze-thaw cycles but appeared relative stable when
  • that the internal pore volume of the samples probably enlarged and microfractures had apparent influence during the freeze-thaw processes.
  • 1997
  • Experimentation ; Freeze-thaw cycle ; Geophysics ; Model ; Periglacial features ; Shear stress ; Slope dynamics ; Slope gradient ; Soil ; Soil moisture ; Soil temperature ; Solifluction
  • Cold room physical modelling of periglacial solifluction processes on an experimental slope of 12° is described, and data on soil temperatures, surface frost heave, thaw consolidation, downslope soil movement and porewater pressures over 7 freeze
  • -thaw cycles are presented. These data are analysed in the context of laboratory determination of the rheometry of the experimental soils at high moisture contents, providing an empirical basis for future predictive analytical techniques. The AA. discuss
  • 1997
  • Thawing of the active layer on the coastal plain of the Alaskan Arctic
  • 1997
  • Biogenic process ; C 14 dating ; Cryoturbation ; Dating ; Freeze-thaw cycle ; Geochemistry ; Mammal ; New York State ; Palaeogeography ; Palaeontology ; Pleistocene ; Quaternary ; Stratigraphy ; United States of America
  • , carnivores, and scavengers) and cryoturbation (annual freeze-thaw cycles).
  • 1997
  • Freeze-thaw cycle ; Freezing ; High mountain ; Microrelief ; Mountain ; Patterned ground ; South Africa
  • -thaw cycles at higher altitudes in the Drakensberg.
  • 1997
  • Freeze-thaw cycle ; Grain size distribution ; Patterned ground ; Periglacial features ; Sweden ; Vertical movement
  • 1997
  • Cape Province ; Creep ; Diurnal variation ; Freeze-thaw cycle ; Freezing ; Mountain ; Sediment transport ; Slope dynamics ; Solifluction ; South Africa
  • 1997
  • Active layer ; Air temperature ; Alaska ; Cold area ; Freezing ; Micro-organism ; Model ; Permafrost ; Soil temperature ; Thawing ; Thermal regime ; Water
  • 1997
  • Experimentation ; Freeze-thaw cycle ; Freezing ; Limestone ; Moisture ; Porosity ; Rock ; Rock mechanics ; Weathering
  • 1997
  • Andes ; Bolivia ; Creep ; Freeze-thaw cycle ; High mountain ; Mass movement ; Multivariate analysis ; Periglacial features ; Slope ; Slope dynamics ; Slope gradient
  • 1997
  • Air mass ; Climate ; Climatic geomorphology ; Crete ; Greece ; High mountain ; Meltwater ; Rill wash ; Slope ; Snow ; Thawing ; Water erosion
  • 1997
  • Africa ; Canada ; Cliff ; Europe ; Freeze-thaw cycle ; Freezing ; Frost action ; Geomorphometry ; Limestone ; Quartzite ; Quebec ; Saint-Laurent ; Schist ; Weathering
  • 1997
  • Aeolian deflation ; Cluster analysis ; Colorado ; Discriminant analysis ; Freeze-thaw cycle ; Grain size distribution ; Mountain ; Patterned ground ; Periglacial features ; Principal components analysis ; Rocky Mountains ; United States of America
  • 1997
  • Aeolian features ; Aeolian transport ; Delta ; Dust storm ; Fluvioglacial features ; Foehn ; Freeze-thaw cycle ; Mountain ; New Zealand ; Proglacial lake ; South Island ; Wind speed
  • 1997
  • Active layer ; Canada ; Cold area ; Ecosystem ; Forest ; Hydrocarbon ; Northwest Territories ; Permafrost ; Pollution ; Subarctic zone ; Thawing
  • 1997
  • Dust storm ; Foehn ; Freeze-thaw cycle ; Meteorology ; New Zealand ; South Island ; Summer ; Wind ; Wind erosion ; Wind speed ; Winter
  • 1997
  • Active layer ; Air temperature ; Alaska ; Climate ; Climatic data ; Cold area ; Model ; Permafrost ; Snow ; Soil temperature ; Thawing ; Thermal regime
  • 1997
  • Air temperature ; Antarctica ; Cold area ; Freeze-thaw cycle ; Frost action ; Rock ; Taffoni ; Temperature ; Thermal regime ; Weathering
  • 1997
  • Alps (The) ; Creep ; Debris flow ; Freeze-thaw cycle ; Freezing ; Mass movement ; Mountain ; Periglacial features ; Permafrost ; Slope ; Slope dynamics ; Solifluction ; Switzerland
  • 1997
  • Creep ; Freeze-thaw cycle ; Freezing ; Hokkaido ; Japan ; Mass movement ; Mountain ; Slope ; Slope dynamics ; Soil moisture ; Soil temperature
  • 1997