inscription
Portail d'information géographique

Résultats de la recherche (53 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Bathymetry ; Data processing ; Fluvial processes ; Remote sensing ; Roughness ; Stream ; Suspended load
  • simulations to quantify the effects of suspended sediment concentration, bottom reflectance, and water surface state; (3) assessing the accuracy of spectrally based depth retrieval under field conditions via ground-based reflectance measurements; and (4
  • 2009
  • Bank erosion ; Mediterranean area ; Model ; Sediment budget ; Sediment load ; Slovenia ; Suspended load ; Watershed
  • 2009
  • Climatic change ; Deforestation ; Land use ; Malaysia ; Precipitation ; Soil erosion ; Stream flow ; Suspended load ; Temperature ; Urbanization ; Watershed
  • 2009
  • Australia ; Channel geometry ; Conceptual model ; Cross section ; Flood ; New South Wales ; Riparian vegetation ; Stream ; Suspended load ; Vegetation
  • 2009
  • Australia ; Model ; New South Wales ; Precipitation ; Rainfall simulation ; Runoff ; Sediment budget ; Slope ; Slope gradient ; Soil erosion ; Splash ; Suspended load ; Water erosion
  • 2009
  • Aragón ; Badland ; Hydrology ; Precipitation ; Pyrénées ; Runoff ; Soil erosion ; Spain ; Suspended load ; Watershed ; Weathering
  • 2009
  • Agricultural land use ; Belgium ; Flemish Brabant ; Forest ; Holocene ; Human impact ; Sediment budget ; Sedimentology ; Soil erosion ; Suspended load ; Watershed
  • 2009
  • Agricultural land use ; Cultivated land ; Germany ; Infiltration ; Land use ; Precipitation ; Runoff ; Saxony ; Slope gradient ; Soil erosion ; Surface water ; Suspended load ; Water erosion
  • 2009
  • Agricultural practice ; Brazil ; Land use ; Model ; Rio Grande do Sul ; Sediment budget ; Soil conservation ; Soil erosion ; Suspended load ; Water erosion ; Watershed
  • 2009
  • conduction, and in-channel damming) in this study. Two non-parametric statistical methods, Mann-Kendall and Pettitt test, were employed to detect the long-term changes in the time series of water discharge and sediment load (1959-2002) at the annual, monthly
  • and seasonal scales. The impacts of precipitation variation and human activities on water discharge and sediment load were discerned and quantified using double mass curve and linear regression methods. The operation of reservoirs and hydropower stations
  • is considered to be responsible for the observed increasing trends of water discharge in the dry-season and decreasing trends of sediment load after 1986, and for the latter, reforestation program in the catchment is another contributing factor. The distinct
  • seasonal changing patterns of both water discharge and sediment load in this study highlight the importance of involving monthly or seasonal time series in the change detection in hydrological data.
  • 2009
  • Azerbaydzhan ; Mathematical model ; Mountain ; Solution load ; Stream
  • 2009
  • Seismic loading impacts on excess pore-water pressure maintain landslide triggered flowslides
  • 2009
  • Channel geometry ; Geo-ecology ; Germany ; Human impact ; Niedersachsen ; Sand ; Sediment load ; Stream ; Typology
  • The article deals with EU water framework directive, the lowland rivers, the hydromorphology, the bed load sampling, typology of watercourses and hydropower. Our research examines if the classification of the Fintau as a sand dominated lowland river
  • 2009
  • The aim of this study is to use data data on wood loads from headwater streams in La Selva Biological Station in north-eastern Costa Rica to examine potential differences in wood dynamics between temperate and tropical headwater streams
  • . The variables wood diameter/flow depth, stream power, the presence of backflooding, and channel width/depth are consistently selected as significant predictors by statistical models for wood load. The results along with the spatial distribution of wood
  • with respect to the thalweg, suggest that transport processes exert a greater influence on wood loads than recruitment processes.
  • 2009
  • The impact of environmental changes on the sediment loads of Norwegian rivers
  • The aim of this paper is to discuss some examples where detailed measurements of the sediment load have been made during extreme events. A selection of rivers representing the range of sediment yields and processes in various parts of Norway has
  • 2009
  • Heat flow ; Hydrology ; Management ; Natural environment ; Risk ; Sediment load
  • 2009
  • Argentina ; Bahía Blanca ; Buenos Aires ; Channel geometry ; Coastal dynamics ; Estuary ; Fluvial erosion ; Model ; Sediment load ; Sediment transport ; Sedimentology ; Seismic method
  • This paper describes the dominant bed load transport circulatory pattern over the tidal channel confluence as well as the scour hole genesis and evolution in Bahía Blanca estuary, Argentina. In addition, the AA. detail the bed morphology associated
  • 2009
  • To identify the internal pollution load of Dianchi Lake it is necessary to evaluate its sediment accumulation. Sedimentation rates of Dianchi Lake are determined by Cs 137 dating. However, Cs 137 vertical distribution in sediment cores of Dianchi
  • and the lakebed area of each section is calculated. It is necessary to evaluate the gross sediment accumulation of the lake in order to identify evolutionary stages of the lake and load of its internal pollution sources. Therefore, this study evaluates gross
  • 2009
  • China ; Dune ; Echosounding ; Estuary ; Fluvial dynamics ; Grain size distribution ; Sediment load ; Sediment transport ; Sedimentology ; Yangtze
  • 2009
  • Carrying capacity ; Channel geometry ; Deforestation ; Fluvial erosion ; Grain size distribution ; Human impact ; Land use ; Sediment load ; Spatial variation ; Stream ; Tennessee ; United States of America
  • 2009