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  • A continuous spatial characterization of textural fractions and CaCO3 content of the topsoil of the Polder region of Northwest East-Flanders, Belgium
  • The aim of our paper is to report the spatial variability of the clay, silt, sand, and CaCO3 contents of the topsoil of the Polder Region (6 840 ha) and to construct a continuous spatial characterization of these components. Because the AA. sampled
  • at small distance lags, several levels of spatial variability of the textural fractions ranging from within-a-field to polder scale were identified. This structure was best represented by nested semivariograms.
  • 1990
  • Répartition spatiale du tapis neigeux dans le Haut-Jura au printemps in Actes.
  • Altitude ; Climat ; Exposition ; France ; Franche-Comté ; Géographie physique ; Haut-Jura ; Manteau nival ; Montagne ; Neige ; Pente ; Radiation ; Télédétection ; Variation spatiale
  • L'altitude explique dans une proportion d'au moins 50 % la variation spatiale du manteau neigeux. A altitude égale, les plus forts enneigements concernent les versants qui regardent l'W, le NW ou le N, et les fonds de val. L'opposition adret-ubac
  • 1990
  • Paleohydrologic techniques used to define the spatial occurrence of floods
  • 1990
  • Amérique centrale ; Climatologie ; Echelle ; Echelle spatiale ; Epistémologie ; Géographie physique ; Nuage ; Taxonomie ; Taxonomie spatiale ; Télédétection ; Zone intertropicale
  • développer une logique de phénoménologie spatiale. - (JPB)
  • 1990
  • Using a spatial synoptic climatological classification to assess changes in atmospheric pollution concentrations
  • The goal of this research is to demonstrate the potential of a newly developed spatial synoptic climatological classification to assess changes in atmospheric pollution concentrations in nine U.S. cities. The procedure divides the United States
  • 1990
  • Temporal and spatial variations in the solute content of an alpine stream, Colorado Front Range
  • objectives : 1) estimate the seasonal variations in water quality| 2) evaluate the nature of spatial variations in the stream solute load within the basin to indicate its sources| 3) use the results to evaluate the magnitude and significance of chemical
  • 1990
  • Comparison of spatial prediction methods for mapping floodplain soil pollution
  • of the interpolation techniques used is based on the correlation between predicted and observed values at 99 test locations and on the spatial distribution of prediction errors.
  • 1990
  • Spatial variability of an agricultural field : geostatistical analysis of soil texture, soil moisture and yield components of two rainfed crops
  • Spatial variations of soil moisture content at three dates of sampling, textural components and yield components of two rainfed crops (vetchoat mixture and durum wheat) successively cultivated on the same field are analyzed by using statistical
  • 1990
  • Arizona ; Cartographie thématique ; Etats-Unis ; Géographie physique ; Krigeage ; Méthodologie ; Précipitation ; Statistique spatiale
  • as a realization of a two dimensional random field taking into consideration the spatial variability conditions.
  • 1990
  • Analyse spatiale ; Climat ; Climat régional ; Climatologie ; Dynamique de l'atmosphère ; Foehn ; France ; France du Sud-Ouest ; Géographie physique ; Précipitation ; Régime pluviométrique ; Vent
  • Contrastes spatiaux importants, surtout au printemps et en automne. Proposition d'un découpage du Sud-Ouest en six régions climatiques, à partir des régimes pluviométriques. Description du vent d'autan. Quelques indications sur les phénomènes locaux
  • 1990
  • Atmosphère ; Classification ; Climat ; Climatologie ; Dynamique de l'atmosphère ; Echelle ; Echelle spatiale ; Epistémologie ; Géographie physique ; Pluviogenèse ; Structure verticale ; Taxonomie ; Taxonomie spatiale ; Zone intertropicale
  • 1990
  • The use of tree-ring chronologies to show spatial and temporal changes in an air mass boundary
  • 1990
  • Variations spatiales et temporelles de l'évapotranspiration potentielle annuelle (ETP) en Méditerranée occidentale durant les 120 dernières années : 1866-1985 in Actes.
  • 1990
  • Energie cinétique ; Erosion des sols ; Erosion pluviale ; Erosivité ; France ; Géographie physique ; Précipitation ; Sol ; Variation spatiale ; Variation temporelle
  • 1990
  • Heat stress characteristics are examined in terms of diurnal distribution, spatial distribution, duration and modification by air movement. It is concluded that, although higher dry bulb summer temperatures occur in southwestern Oklahoma resulting
  • 1990
  • The most common measure of drought, the Palmer Drought Severity Index (PDSI), is combined with the theory of runs in a Markov chain analysis. The A. analyzes the spatial pattern of severe and extreme drought for 41 climate divisions in the five
  • 1990
  • The AA. study the spatial distribution of metal concentration in soils and crops and determine abnormal differences in metal content between the samples and regional background. Statistical data reveal that the high level of metal concentrations
  • 1990
  • By using glaciological and geotechnical theory, the AA. show that the expression of these deformational styles in East Anglia is a natural response to the stress fields imposed by the ice-sheet, and that in consequence their spatial relationships
  • 1990
  • This paper evaluates and compares hydraulic characteristics in flows with and without rainfall disturbance. The spatial uniformity of simulated rainfall properties, and its significance to flow hydraulics, are also discussed.
  • 1990
  • Bilan hydrique ; Cameroun ; Carte ; Cycle de l'eau ; Eau du sol ; Evapotranspiration ; Formule de Turc ; Géographie physique ; Sol ; Variation spatiale ; Variation temporelle ; Zone intertropicale
  • 1990