Channel and reservoir sedimentation, Ha Tsiu catchment, Maseru in Sediment sources, sediment residence time and sedimenttransfer-Case studies of soil erosion in the Lesotho lowlands.
Bassin-versant ; Erosion des sols ; Géographie de l'Afrique ; Géomorphodynamique ; Lesotho ; Maseru ; Sédimentation
Rates of channel sedimentation| rates of reservoir siltation| influence of vegetation, soil, land use and slope on the rates of sediment processes.
Sedimenttransfer within a geomorphic system in a foothill region of Lesotho in Sediment sources, sediment residence time and sedimenttransfer-Case studies of soil erosion in the Lesotho lowlands.
Temporal variation in downstream sedimenttransfer in the Lower Yellow River
China ; Huang He ; Human impact ; Hydraulic works ; Sediment transport ; Soil conservation ; Stream ; Twentieth Century ; Water resources ; Watershed
An index of sedimenttransferring function (Fs) is applied in this study to reveal the temporal variation in the downstream sedimenttransfer of the Lower Yellow River. It is found that in the past 50 years, this sedimenttransferring function index
, the changing drainage basin factors have resulted in the decrease in the sedimenttransferring function of the Lower Yellow River.
Sediment budgets and rates of sedimenttransfer across cold environments in Europe : a commentary
Climatic change ; Cold area ; Erosion ; Europe ; Model ; Northern Europe ; Periglacial features ; Permafrost ; Sediment budget ; Sediment transport
The aim of this short paper is to provide a personal commentary on some of the themes discussed in this Special Issue and highlight other key topics and areas of potential future importance : glacial sedimenttransfer processes; cold-region coastal
processes; cold climate solute dynamics; and the role of cold-tolerant ecosystems in conditioning sediment dynamics.
The geomorphological mapping of the Mejametalana catchment, Maseru in Sediment sources, sediment residence time and sedimenttransfer-Case studies of soil erosion in the Lesotho lowlands.
Sediment sources, sedimenttransfer in a small Lesotho catchment. A pilot study of the spatial distribution of erosion features and their variation with time and climate
Bassin-versant ; Erosion ; Erosion des sols ; Géographie de l'Afrique ; Géomorphodynamique ; Lesotho ; Montagne ; Photo-interprétation ; Photographie aérienne ; Ravinement ; Sédiment ; Transport sédimentaire ; Zone subtropicale
Soil erosion in different Lesotho environments-Rate and sediment sources in Sediment sources, sediment residence time and sedimenttransfer-Case studies of soil erosion in the Lesotho lowlands.
Inventory of sediment sources and possible storage areas and study of reservoir sediments, in three catchments in the lowland area of western Lesotho.
A soil erosion map of the Lesotho lowlands. A case study using visual interpretation of multitemporal Landsat false colour composites in Sediment sources, sediment residence time and sedimenttransfer-Case studies of soil erosion in the Lesotho
The project is made within the framework of a larger research programme on the relations between sediment production, sediment residence time and sediment delivery in different climates and geomorphological environments.
Sediment transport under different types of vegetation in Sediment sources, sediment residence time and sedimenttransfer-Case studies of soil erosion in the Lesotho lowlands.
The standard conditions of erosion rates (on albaqualps respective argiudolls soils) is considered to be described by two areas with undisturbed grass cover. Measured sediment concentration in runoff from these were compared with two study areas
Variability in sediment supply, transfer and deposition in an upland torrent system : Iron Crag, northern England
Alluvial cone ; Cumbria ; England ; Grain size distribution ; River bed ; Sediment budget ; Sediment load ; Sediment transport ; Slope gradient ; Spatial variation ; Stream ; Torrent ; United Kingdom
The aim of this study is to examine spatial variations and process controls on sedimenttransfer in an upland torrent system (hillslopes, channel and fan). The study site is Iron Crag, a small torrent system situated in the northern Lake District
. Partcle size analysis of hillslope sediments trapped during transport suggests sediment calibre is controlled primarily by sediment source. Freeze-thaw and rainfall processes impart a weak but recognizable size sorting signature on the trapped sediments
. The importance of the channel-fan coupling is clearly demonstrated in that more than 90 per cent of fan sedimentation is derived from channel sediment sources.
Development and application of a method to estimate short-term alpine sedimenttransfer in the Colorado Front Range, U.S.A.
Using photogeologic techniques to develop a terrain classification, clastic sediment movement was evaluated in the Roaring River Watershed in the Colorado Front Range. - (DWG)
Physiographically controlled allometry of specific sediment yield in the Canadian Cordillera : a lake sediment-based approach
British Columbia ; Canada ; Lacustrine sediment ; Model ; Mountain ; Sediment budget ; Sedimenttransfer ; Sedimentology ; Suspended load ; Watershed
Bassin-versant ; Bilan sédimentaire ; British Columbia ; Canada ; Charge en suspension ; Modèle ; Montagne ; Sédiment lacustre ; Sédimentologie ; Transfert sédimentaire
estimates of long-term sediment yield, sub-regional patterns of specific yield have been investigated for the Canadian Cordillera. The results suggest that no single model of sediment yield is adequate to describe sedimenttransfer processes in the Canadian
It is generally supposed that specific sediment yield declines as the drainage basin area increases, as part of the mobilized sediment becomes trapped in the downstream cascade of storage zones. Using a larger data set of lake sediment-based
Dynamic model ; Fluvial basin;Watershed ; Forecast;Prediction ; Iowa ; Model ; Multiple regression ; Sedimentation ; Sedimentology ; Stochastic model ; United States
L'étude porte sur les modèles de régression de sédiments en suspension dans les bassins fluviaux de l'Iowa. L'A. propose des modèles plus fiables dits de transfert fonction/bruit (provoquée par les flux). Ceux-ci prédisent mieux la concentration des
sédiments en suspension car ils sont dynamiques et respectent des critères précis. (M. Villey).
Gully erosion in relation to extrinsic and intrinsic variables in Sediment sources, sediment residence time and sedimenttransfer-Case studies of soil erosion in the Lesotho lowlands.
Erosional processes, land use, landforms and soils, Khubetsoana area, Maseru in Sediment sources, sediment residence time and sedimenttransfer-Case studies of soil erosion in the Lesotho lowlands.
Soil erosion in the Maphutseng and Ha Thabo soil conservation areas in Sediment sources, sediment residence time and sedimenttransfer-Case studies of soil erosion in the Lesotho lowlands.
European impacts on downstream sedimenttransfer and bank erosion in Cobargo catchment, New South Wales, Australia
Australia ; Bank erosion ; Channel geometry ; Fluvial processes ; Granite ; Human impact ; Landscape ; Meander ; New South Wales ; Sediment budget ; Sediment transport ; Watershed
-catchment linkage of geomorphic processes associated with upland sediment release, mid-catchment sedimenttransfer, and sediment accumulation in the lowland zone, has produced a predictable downstream pattern in the distribution of bank erosion.
Permafrost, gelifluction and fluvial sedimenttransfer in the Alpine subnival ecotone, Central Alps, Austria : present, past and future
Current processes of gelifluction and fluvial sedimenttransfer have been monitored for several years in the periglacial altitudinal belt of the southern Hohe Tauern mountain range, central Alps Austria. A close connection between cryogenic
processes and the destruction of vegetation cover, the intensity of gelifluction and also the amount of sedimenttransfer in the headwater channels can be demonstrated. Through a combination of these results with a data on Holocene slope, soil and channel
Cet article traite des flux de sédiments sur les talus d'éboulis. A l'aide d'orthophotos, de mesures de terrain et de techniques SIG, plusieurs secteurs et volumes de transferts de sédiments ont été quantifiés à différentes échelles géographiques
. L'étude d'un complexe de talus d'éboulis et de cônes de laves torrentielles a permis de démontrer que la remobilisation surpasse l'apport actuel de sédiments d'un facteur de 57.