inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

Résultats de la recherche (12 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Action anthropique ; Biosphère ; Concept ; Ecologie appliquée ; Environnement ; Environnement global ; Géographie physique ; Géosphère ; Paléogéographie ; Programme de recherche ; Recherche
  • After outlining the background of the IGPB (International Geosphere-Biosphere Programme), the AA. conclude that understanding of global change cannot be gained fully without reconstruction of earlier landscape processes, more sophisticated modelling
  • of the dynamics of present-day landscapes, analysis of the causes and consequences of anthropogenic changes in specific regions, appraisal of the conditions in which societies may respond to the new knowledge of those changes, and a greatly enhanced geographic
  • 1990
  • Dynamic pedogenesis : new views on some key soil concepts, and a model for interpreting Quaternary soils
  • A model of pedogenesis is presented in an evolutional paradigm that emphasizes the integrated effects of dynamic and passive pedogenic vectors in directing pathways and in controlling rates of soil genesis through time. This model helps explain
  • 1990
  • Coastally trapped disturbances in the lower atmosphere : dynamic commonalities and geographic diversity
  • that the fundamental dynamics of the disturbances is in each case governed by the hydrostatic and semigeostrophic approximations. The latter implies that a geostrophic balance exists between the alongshore velocity of the motion and the across-shore pressure gradient.
  • 1990
  • Rainfall induced soil seal. C) A dynamic model with kinetic energy instead of cumulative rainfall as independent variable
  • 1990
  • Vegetation dynamics during the last deglaciation, southeastern Great Basin, U.S.A.
  • 1990
  • Flow dynamics and the variability of suspended sediment in a semiarid tropical stream, Baringo District, Kenya
  • 1990
  • Floodplain dynamics of a wandering river, dendrochronology of the Morice River, British Columbia, Canada
  • 1990
  • Flood dynamics of a concrete-lined, urban stream in Kansas City, Missouri
  • 1990
  • Reconnaissance of the dynamic characteristics of an active Strzelecki Desert longitudinal dune, southcentral Australia
  • 1990
  • The results presented here confirm the use of the ultrasonic apparatus as a technique for indirectly determining rock strength by determining Dynamic Young's Modulus. The results also indicate that the ultrasonic apparatus can be used as a field
  • 1990
  • A long flume study of the dynamic factors affecting the resistance of a loamy soil to concentrated flow erosion
  • 1990
  • A simulation model of forest dynamics was used to reconstruct the composition and structure of the forests on the Delmarva Peninsula of Virginia, where pollen data were available to test the model, and climate and soils data were available to drive
  • 1990