inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

Résultats de la recherche (32 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Tidal variation in field settling velocities of suspended sediment in a tidal channel
  • Denmark ; Estuary ; Fluvial dynamics ; Fluvial processes ; Intertidal zone ; Sedimentology ; Suspended load
  • In this study, field settling velocities of the suspended sediment have been measured during two tidal periods, in Ho Bugt, on October 17, 1989 and July 24, 1990. During both periods, the current velocity, salinity, water temperature and suspended
  • sediment concentration were measured together with the field settling velocities of the fine-grained suspended sediment. Discussion of the results and study of the flocculation process.
  • 1992
  • Suspended sediment outflow from the Cachi reservoir during the flushing in 1990
  • Applied hydrology ; Catchment area;Watershed ; Costa Rica ; Dam ; Hydraulic works ; Suspended load ; Turbidity
  • A method is presented to estimate the deposition of suspended material in reservoirs. Morphology of the reservoir, flow conditions including the occurrence of turbidity currents, duration of water discharges, suspended sediment inflow and grain size
  • 1992
  • Suspended sediment inflow to the Cachi reservoir
  • Applied hydrology ; Carrying capacity ; Catchment area;Watershed ; Costa Rica ; Dam ; Hydraulic works ; Sediment transport ; Suspended load
  • The main aim of this study is to determine a reliable value of the total sediment load transported by the rivers to the Cachi reservoir.
  • 1992
  • Applied hydrology ; Catchment area;Watershed ; Costa Rica ; Dam ; Hydraulic works ; Sediment budget ; Sedimentation ; Suspended load
  • , sediment deposition in the reservoir, throughflow of suspended material and evacuation during flushing.
  • 1992
  • Costa Rica ; Dammed lake ; Discharge ; Grain size distribution;Granulometry ; Lacustrine sedimentation ; Lake ; Mathematical model ; Palaeohydrology ; Sedimentology ; Suspended load ; Turbidity
  • 1992
  • Catchment area;Watershed ; Costa Rica ; Dam ; Erosion ; Hydraulic works ; Sedimentology ; Suspended load
  • 1992
  • Bibliography ; Carrying capacity ; Channel geometry ; Drainage network ; Floodplain ; Fluvial processes ; Fluvial terrace ; Human impact ; Hydraulic works ; Model ; Sediment budget ; Sediment transport ; Stream flow ; Suspended load
  • 1992
  • Catchment area;Watershed ; Colorado ; Earth surface processes ; Mountain ; Nivation hollow ; Sediment budget ; Slope ; Snow ; Suspended load ; United States
  • 1992
  • Catchment area;Watershed ; Costa Rica ; Dam ; Hydraulic works ; Mathematical model ; Model ; Sedimentation ; Suspended load ; Turbidity
  • 1992
  • British Columbia ; Canada ; Fluvial processes ; Ground survey ; Hydrodynamics ; River bed ; Sand ; Stream ; Suspended load ; Turbulence
  • 1992
  • Fluvial processes ; Lithology ; Romania ; Sediment load ; Stream
  • In Romania the lithology is a true mosaic, so that the suspended load varies broadly. Using logartithmic coordinates, the A. establish mathematical relationships between water and solid discharge and between solid discharge and kind of rock
  • 1992
  • Catchment area;Watershed ; Modelling ; Soil erosion ; Suspended load
  • 1992
  • Gravel ; Ground survey ; Hydrodynamics ; Methodology ; Mississippi ; River bed ; Roughness ; Sediment load ; Stream ; United States
  • The A. has analysed bed load transport rates during rising and falling stages of two small streams (Godwin Creek Research Watershed, Nothern Mississippi, USA)
  • 1992
  • Drainage network ; Fluvial deposit ; Isotope analysis ; Research technique ; Russia ; Russian Plain ; Sediment budget ; Sediment load ; Slope profile ; Soil erosion ; Watershed
  • profiles, calculations by models and also usage of cesium-137 isotope to estimate quantitatively erosion and deposition rates. Examples are given of the sediments budget and calculations of load transport coefficients for a series of drainage basins
  • 1992
  • Amazonas ; Brazil ; Catchment area;Watershed ; Deforestation ; Ecosystem ; Fluvial basin;Watershed ; Fluvial hydrology ; Geochemistry ; Human impact ; Hydrodynamics ; Meteorology ; Precipitation ; Rondonia ; Sediment load ; Sedimentary ; Spectral
  • they first characterize the hydrological behavior of the drainage basins and its relationship with the particulate and dissolved river loads in this region.
  • 1992
  • The A. disputes the hypothesis that land-use practices have altered the hydrologic regime of these basins or have contributed to an increased sediment load in the rivers. - (DWG)
  • 1992
  • Downcutting;Incision ; Experimentation ; Gully erosion ; Hydrodynamics ; Rainfall ; Rill wash;Runoff ; Roughness ; Sediment load ; Sedimentary ; Simulated rainfall ; Soil erosion
  • 1992
  • Concept ; Fluvial dynamics ; Fluvial processes ; Grain size distribution;Granulometry ; Hydrodynamics ; Methodology ; Sediment load ; Sedimentary ; Stream
  • 1992
  • reaches of lower Vistula (unregulated, regulated, downstream from the Włocławek dam) are introduced. On the basis of literature and own studies carried out in the lower Vistula channel, the hydrology of mesoforms constructed. The bed-load balance
  • 1992
  • New aspects of geomorphological research in the solution of questions related with planning of further anthropogenic loading of socio-economic functions of the city. The new developed methodology is based on morpholithosystemic approach
  • 1992