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Portail d'information géographique

Résultats de la recherche (26 résultats)

Lag times for small drainage basins

Discussion of simultaneous measurement of storm rainfall and resulting runoff during individual storms made in small basins in the San Francisco Bay Area, California, over a period of ten years. Using lag time relations, synthetic hydrograph

The self armouring process under unsteady flow conditions

distribution were subjected to flow hydrographs that varied in depth (D) and duration (T). A model is proposed to predict the final composition of the armour layers developed under the effects of unsteady flow conditions.

Diurnal variations in the inorganic solute content of water draining from an alpine snowpatch

of melt water transferred to the channel through different routes. This suggests that variations in water quality over the diurnal cycle might be used to partition the flow hydrograph. It also indicates a source of bias in mass yield estimates.

Shelfwater response to the cold winters of 1977 and 1978 in the South Atlantic Bight (SAB)

Hydrographic data from winter and summer cruises during the 1976 to 1979 period were used to illustrate atypical oceanographic conditions in the SAB, especially during the cold winters of 1977 and 1978.

Propositions pour une nouvelle classification des édifices sableux éoliens d'après les images des satellites Landsat I, Gemini, Noaa 3

Starting from a basic unit, a classification of features built up by eolian sand is proposed. Like with hydrographic systems, it is possible to differenciate dunes. The features of eolian origin of all scales as well as the parameters

The potential use of pollen in the identification of suspended sediment sources

hydrographes de saisons différentes montrent des courbes hystérétiques pour les concentrations. Ces variations reflètent non seulement les facteurs de production mais aussi le type et la distance des sources d'approvisionnement. Les variations des