inscription
Portail d'information géographique

Résultats de la recherche (23 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Dungeness foreland: its shingle ridges and what lies under them
  • Raspolagajutsja li lednikovye cirki gornyh stran na opredelennyh vysotnyh urovnjah, i esli da, to cem opredeljajutsja eti urovni? Les cirques glaciaires des régions montagneuses sont-ils disposés à des altitudes déterminées, et si oui, par quoi ces
  • Mozno li sudit'o transpiracii lesa po velicine ego produktivnosti? Peut-on juger de la transpiration d'une forêt d'après la valeur de sa productivité?
  • The granulometrical border between eolian transport in saltation and eolian transport in suspension lies, according to the results of the experiment, at a diameter of about 63 m.
  • The chemistry of the lanthanides is compared with that of alkali and alkaline earth metals with a similar electronegativity (the lithium group Li, Mg, Ca, Sr) to confirm that solid state chemistry plays a major part in controlling the composition
  • Presentation of altitudinal gradients of thermal variables and seasonal means as regression equations which allows extrapolation of such variables to a range of altitudes. The lowest critical isotherm, O C for the period December-March, lies
  • this relationship on three points. Two of the points lie on a glacial till slope, one in an old spruce forest and the other in a clear felled area. The third point lies on a clear felled area on level sediment. This study mainly deals with the period when the soils
  • On the basis of field investigations at water-filled hollow moulds (kettle holes) in Ostbrandenburg the density of this landscape element, the function and the efficiency in the rural landscape were analysed. The focus of this investigation lies
  • be described as wholly concave in plan where P is less than 40, wholly convex in plan where P is greater than +40 and convexo-concave in plan where P lies between 40 and +40. One mesure of P taken at the profile sampling line is found to give a better estimate
  • between discontinuous and sporadic permafrost lies just on the cold side of 0C MAAT. The sporadic permafrost zone includes the zone of ice caves and the regions with patches of ice beneath ponds and peatbogs, out to 5C MAAT at a thawing index of 4000