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Résultats de la recherche (28 résultats)

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  • Surficial patterns of debris flow deposition on alluvial fans in Death Valley, CA using airborne laser swath mapping data
  • Alluvial cone ; California ; Cartography ; Debris flow ; Geomorphometry ; Mountain ; Remote sensing ; Slope dynamics ; United States of America
  • California ; Cartographie ; Coulée de débris ; Cône de déjection ; Dynamique de versant ; Etats-Unis ; Géomorphométrie ; Montagne ; Télédétection
  • The AA. utilize fine-scale morphometric measurements to map debris flow deposition and determine if the 2 zones of deposition are consistent between multiple alluvial fans in Death Valley, California. They postulate that the current assertion of 2
  • 2006
  • Impacts of Holocene climatic variations on alluvial fan activity below snowpatches in subarctic Québec
  • Alluvial cone ; Canada ; Climatic variation ; Dendrochronology ; Holocene ; Nivation hollow ; Periglacial features ; Precipitation ; Quebec ; Snow ; Soil moisture
  • Canada ; Cône de déjection ; Dendrochronologie ; Holocène ; Humidité du sol ; Neige ; Niche de nivation ; Précipitation ; Périglaciaire ; Québec ; Variation climatique
  • In the Lake Guillaume-Delisle area of subarctic Québec, storm-generated alluvial fans have been active sporadically throughout the Holocene. In this study, the AA. propose that the persistence of late-lying snowpatches in fan catchments during
  • Holocene cold episodes promoted alluvial fan activity by lowering the precipitation threshold required to trigger a torential event. This hypothesis was tested by characterizing the depositional processes responsible for alluvial fan formation below
  • snowpatches, and by reconstructing the Holocene alluvial fan activity.
  • 2006
  • Alluvial cone ; Cumbria ; England ; Grain size distribution ; River bed ; Sediment budget ; Sediment load ; Sediment transport ; Slope gradient ; Spatial variation ; Stream ; Torrent ; United Kingdom
  • Bilan sédimentaire ; Charge solide ; Cours d'eau ; Cumbria ; Cône de déjection ; England ; Granulométrie ; Lit fluvial ; Pente de versant ; Royaume-Uni ; Torrent ; Transport sédimentaire ; Variation spatiale
  • 2006
  • Identification of facies models in alluvial soil formation : the case of a Swiss alpine floodplain
  • Alpes ; Cours d'eau ; Ecosystème ; Gestion de l'environnement ; Modèle ; Plaine d'inondation ; Propriétés du sol ; Pédogenèse ; Réhabilitation ; Sol alluvial ; Statistique ; Suisse
  • Alluvial soil ; Alps (The) ; Ecosystem ; Environmental management ; Floodplain ; Model ; Pedogenesis ; Rehabilitation ; Soil properties ; Statistics ; Stream ; Switzerland
  • This paper describes different conceptual facies models intervening in alluvial soil formation in the case of the Sarine River floodplain, a partially embanked floodplain situated in the northwest of the Swiss Alps. Alluvial soils are submitted
  • 2006
  • Deformation of a modern alluvial plain
  • Alluvial plain ; Flood ; Netherlands (The) ; Sedimentary structure ; Sedimentation ; Stream
  • The alluvial plain of the Waal River (The Netherlands) showed large flow-lobe like structures after it had fallen dry following floodings. The deformation is ascribed to a rare coincidence of hydrological, topographic, and weather conditions. Local
  • 2006
  • Holocene alluvial sediment storage in a small river catchment in the loess area of central Belgium
  • 2006
  • Deep infiltration through a sandy alluvial fan in semiarid Niger inferred from electrical conductivity survey, vadose zone chemistry and hydrological modelling
  • 2006
  • Alluvial plain ; Flood ; Floodplain ; Vegetation
  • The papers deals with the topic of vegetation changes and successional developments as well as spread of invasive species in alluvial plains after extreme floods in last 10 years. The situation is paid to processes of vegetation successional
  • 2006
  • deposits, alluvial overbank facies and alluvial channel facies. The sedimentary context of each date was classified in order to identify those samples that specifically dated change in the fluvial environment. The results indicate that in Mediterranean
  • 2006
  • Mineralogical indicators of alluvial sediment sources in the Cape Fear River basin, North Carolina
  • 2006
  • Structure of flow over alluvial bedforms : an experiment on linking field and laboratory methods
  • 2006
  • In this paper, kinematical analysis of frontal anticlines and spatial mapping of active faults based on geomorphological features such as drainage pattern development, fault scarps and uplifted Quaternary alluvial fans are presented. The AA. analyse
  • 2006
  • In this paper, a modified bank stability analysis is presented that attempts to make use of both the frictional strength parameter and the scale dependent cohesive strength parameter. The AA. have applied this model to the alluvial channels
  • 2006
  • Depopulation and farmland abandonment resulted in plant recolonization in formerly cultivated areas, causing a decrease in runoff and sediment yield. As a consequence, most Pyrenean rivers tend to reduce the width of the alluvial plain
  • 2006
  • Reconstitution de la dynamique du paysage alluvial de trois secteurs fonctionnels de la rivière Allier (1946-2000), Massif Central, France
  • 2006
  • Agriculture ; Alluvial plain ; Bangladesh ; Delta ; Land ; Land development ; Land tenure ; Peasantry ; Population pressure
  • 2006
  • Alluvial plain ; Delta ; Flood ; Flood control ; Natural hazards ; Territorial planning ; Vietnam ; Vulnerability
  • 2006
  • Alluvial plain ; Delta ; Flood ; Flood control ; Human impact ; Hydraulic works ; Overpopulation ; Population pressure ; Vulnerability
  • 2006
  • Rates of sediment supply by landsliding to an alluvial channel in a small catchment in central Switzerland were estimated over an 11-month study period. Fluvial sediment transport in the channel is independently monitored at the upstream
  • 2006
  • The AA. examined 27 reservoirs in the northern and eastern Mojave Desert that trapped sediment from small drainage basins on alluvial fans over the past 100 yr, calculated annual sediment yield, and estimated the average recurrence interval (RI
  • 2006