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Showing 1 to 15 of 15 for “"Slope length"”.
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Working Up Hills: Dynamics over Sloping Topography with Bottom-Enhanced Diffusion
… simulating the desired phenomena, notably an upslope flow along the topography, and had otherwise comparable results. Two diagnostics were used for analyzing both models: the minimum value of streamfunction is a proxy for flux of a bottom boundary layer, and an estimate of thickness for the …
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Preconditional factors affecting the adoption of conservation tillage practices for Elgin, Middlesex and Oxford counties (Ontario).
… influence on adoption of conservation tillage. Slope length and gradient and soil erodibility were found to be poor predictors of adoption. Also, adoption rates did not significantly differ between cashcrop and non-cashcrop operations. Five variables were found to offer significant explanation …
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An assessment of the relationships between the surface soil properties and components of slope and vegetation in the Upper Wadi Bishah Basin, Saudi Arabia
… between them, as well as their relationship with slope components in the Upper Wadi Bishah basin, south-west Saudi Arabia. It is based mainly on quantitative and laboratory analysis, and provides a scientific basis for exploitation of the basin's slopes and conservation of its soil and …
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Assessment of soil erosion hazard around the abandoned mine in formerly Mutale Municipality, Limpopo Province, South Africa
… were considered for the model include relief (Slope steepness, S & slope length, L), soil erodibility (Fb), vegetation cover (C) and rainfall erosivity (E). Soil samples were collected from the field and; sieve and hydrometer analysis was conducted to determine the erodibility factor value of …
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How does rock-ramp fishway surface texture affect the passage success of small-bodied Great Plains fishes?
… affected by the key fishway design parameters of slope, length, and texture. Recent research has provided more information on fishway slope and length, and identified texture of the surface between the larger roughness elements as an area needing more investigation. We evaluated the effects of …
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Modelling runoff generation and connectivity for semi-arid hillslopes and small catchments
… generation in a semi-arid environment at the hillslope scale are poorly understood. This research considers the amount and origin of water reaching the channel during a storm event using a combination of field experiments and computer simulation techniques. From the field experiments, it was found …
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Comparing Rusle LS Calculation Methods across Varying DEM Resolutions
… The topographic factor (LS), which combines slope length and angle, is an important part of RUSLE. This work compared two methods of L calculation, the grid cumulation (GC) and the contributing area (CA) methods, and two methods of S calculation, the neighborhood (NBR) and maximum downhill …
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Assessment of Site and Soil Characteristics of Rill Erosion Following the Lockheed Fire in the Little Creek Watershed, Swanton Pacific Ranch
… in 2010 there was a significant amount of hillslope-derived sediment deposited on the roads and in the creek. A large portion of this material was derived from two chaparral hillslopes. These hillslopes were identified as the only two hillslopes within the Little Creek subwatershed where an …
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Patterns of water table dynamics and runoff generation in a watershed with preferential flow networks
… explore some of these patterns for a hillslope and small watershed in coastal British Columbia. In the first chapter, tracers were applied under natural and steady state conditions to determine the relationship between lateral tracer velocities and various hillslope and event …
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Improved Understanding Of Subsurface Hydrology In Variable Source Areas And Its Implications For Water Quality
… on VSA formation and connectivity, a 0.5 ha hillslope was instrumented (trenched) in the southern tier of New York, U.S. Water flux from different soil layers in the trench and upslope water table dynamics were recorded for 16 events and isotopic and geochemical tracers were measured during five …
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Optimizing the management of soil erosion using GIS
… problems. Runoff erosivity, soil erodibility, slope length, slope steepness, cover management, and erosion control practice factors were computed and included in the digitized and computed Thiessen polygon, land component, slope and land-use maps of the watershed. The sediment yield of each …
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Land-use change effects on soil organic carbon, total soil nitrogen, and soil erosion in a temperate forest and grassland
… nitrogen (TSN) including soil texture, climate, slope length and gradient, and current and past land-use. The purpose of this study was to compare by land use the retention of SOC and TSN on sloping landscapes. Two separate paired sites were used in the study, one a forest and cropland on a …
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Estimating Sediment Losses Generated from Highway Cut and Fill Slopes in the Lake Tahoe Basin
… Of these urban sources, highway cut and fill slopes often generate large amounts of sediment due to their steep, highly-disturbed nature. Therefore, understanding the erosion mechanisms (rainfall-runoff and dry ravel), the magnitude of erosion rates and the particle-size distribution (PSD) of …
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Improved understanding and prediction of the hydrologic response of highly urbanized catchments through development of the Illinois urban hydrologic model (IUHM)
… that accounts for the variance in conduit (e.g. slope, length, diameter etc.) and overland region input parameters (e.g. slope, area, imperviousness etc.) within an order. This dispersion mechanism is found to be the second largest contributor to the total dispersion in urban catchments, …
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Modelling temporal dynamics of discharge and nutrient loading from a mixed land use catchment, and interactions with a eutrophic, temperate lake under climate change
… of main channel processes (e.g., lateral flow slope length and travel time) were more sensitive for base flow estimates (particularly discharge and SS), while those relating to overland processes (e.g., Manning's n value for overland flow) were more sensitive for the quick flow estimates. …