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PORTAIL D'INFORMATION GÉOGRAPHIQUE

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  • Using iron metal rods to infer oxygen status in seasonally saturated soils
  • Since monitoring oxygen in soils is expensive and time consuming, the aim of this research was to develop an inexpensive, non-intrusive, simple field technique to infer or estimate the oxygen status in soils. Zero-valent iron rods (polished nails
  • The mechanism of instability of slopes composed of granular materials was examined through a tilting-box experiment using an assembly of aluminium rods and direct shear tests. Avalanching of granular materials is triggered by rotation of rods
  • rod and a table and an analytical expression to more easily obtain vertical velocity profiles in rivers.
  • événementielles (Francis et Pritchard,152). La visualisation dynamique dans un cadre développé pour la représentation de données géographiques (Blok,153). Les trois niveaux d'organisation proposés par Bertin (Rød,154).
  • RØD, J.K.
  • The mechanism for instability of a cliff made of soil mass due to downcutting was examined through an experiment using a new apparatus having no side walls. The cliff is made by piling an assembly of wetting aluminium rods. The following points can
  • La thèse étudie de façon systématique les infiltrations d'azote et leur impact sur le bilan hydrologique. Le modèle à moyenne échelle est vérifié avec l'exemple du bassin versant du fleuve saxonien Grosse Röder. - (HPB)
  • , particularly the rod penetration method suggested by Viro in 1952. The general evaluation of surface penetration methods revealed that large errors in very stony soils cannot be avoided. It is inherent in the method and not caused by sampling. This conclusion
  • In this study, relative volumes of stones and gravel were investigated in the top soils, i.e. down to 30 cm depth, of five Swedish arable sites. Bulk density and gravel volume were determined by soil coring and stone volume using the rod penetration
  • This paper reports results from detailed pollen and charcoal analyses of closely spaced Wright square-rod piston cores from a fen in Canal de la Puntilla in the Llanquihue-age moraine belt, about 3 km from the modern lake shore of Lago Llanquihue
  • these difficulties (the higher time required for analysis and the error margin) it seems more appropriate to use a GPR, instead of a graduated rod linked to a GPS, to measure the peat depths on a site like the one presented in this study.