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Showing 1 to 14 of 14 for “"drainage density"”.
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Application of Morphometric Relationships to Active Flow Networks Within the Mammoth Cave Watershed
… formulated to describe the nature of surface-drainage networks. These parameters have been used in various studies of geomorphology and surface-water hydrology, such as flood characteristics, sediment yield, and evolution of basin morphology. Little progress has been made in applying these …
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A study of the groundwater travel time distribution at a rural watershed in Iowa: A systems theory approach to groundwater flow analysis
… depth. We examined the impact of variable tile drainage density and incision depth on travel times and baseflow. The marginal impact of tile drainage density on travel times and baseflow volumes was observed to diminish with increasing density, while the impact of tile incision depth on the two …
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Exploring equifinality in a landscape evolution model
… are summarised by four metrics (sediment yield, drainage density, sediment delivery ratio, and a topographic metric), which serve as landscape descriptors.<br/>Equations, or “metamodels”, are derived by regression to describe each metric as a function of the GOLEM parameters, and further …
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Geomorphology and ecohydrology of water-limited ecosystems : a modeling approach
… vegetation controls translates into a minimum in drainage density for a semi-arid climate. Erosion efficiency is also affected by down-slope increases in vegetation, fostered by subsurface flow, an effect that reduces channel concavity. Plant characteristics also play a role in erosion by changing …
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Land degradation in the Cathedral Peak area of the Natal Drakensburg : 1945 to 1992
… eroded areas or surfaces and gullies and drainage density. The results show that for number of homesteads and cultivated area in the Cathedral Peak Area, there has been an exponential (geometric) and constant (arithmetic) increase respectively during the period under investigation. These …
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The surface morphology of a small drainage basin in the North Dakota Badlands
… the surface morphology of a fourth order drainage basin located in the North Dakota Badland,, the writer made quanti tative application• of known descriptive techniques and morphological laws. </p><p> The surface configuration is a function of the study area's linear, areal, and relief …
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Testing the Origins of the Blue Ridge Escarpment
… scarp zone itself. Parameters such as relief, drainage density, hypsometry, and slope are often used as proxies for relative erosion rates and the degree of maturity of a landscape. Results from these analyses indicate that the Upland and Piedmont zones are distinct landscapes, sharing very few …
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Transition to Novel Internet of Things Technology for Management of Groundwater Resources? Case of Cape Town, South Africa
… in a flat area with quaternary deposits, low drainage density and high lineament density, which increase water infiltration rate, thus promoting groundwater recharge. The impact of the groundwater recharge was evaluated using the water budget, as there was an increase of 0.86 m between the …
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Comparison of Two Algorithms for Removing Depressions and Delineating Flow Networks From Grid Digital Elevation Models
… deviation, curvature, channel slope, and drainage density. TOPAZ (ver 1.2) and ArcView were each used to generate a depression-free surface, flow network and watershed area. Characteristics of the areas 'cut' and 'filled' by the algorithms were compared to topographic characteristics of …
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Observation-Based Algorithm Development For Subsurface Hydrology In Northern Temperate Wetlands
… was incorporated into a new subsurface drainage algorithm. The spatial variability of water table depth across landscape positions has been represented</p> <p>using a topographic index approach. By incorporating a water table gradient into the VIC grid cell, subsurface-surface water …
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Identification of potential groundwater recharge zones: a case study of KwaZulu-Natal, South Africa
… layers, i.e., geology, geomorphology, lineament density, soils, slope, rainfall, and land use. Each thematic layer were assigned with subjective relative weights under AHP-MCDM technique and Boolean logic and were overlaid in a GIS platform to identify the groundwater potential zones. The …
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Using Accumulation Based Network Identification Methods to Identify Hill Slope Scale Drainage Networks in a Raster GIS
… criticized for producing a spatially uniform drainage density (Tarboton 2002) at the watershed scale. This criticism casts doubt on the use of ANIMs for deriving properties such as overland flow length for nonpoint source pollution models, without calibrating the accumulation threshold value. …
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Characterizing and modeling wet stream length dynamics in Appalachian headwaters
Headwater streams change in wet length in response to storm events and seasonal moisture conditions. These low-order channels with temporary flow are pervasive across arid and humid environments yet receive little attention in comparison to perennial waterways. This dissertation examines headwater …
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Post-glacial rivers: Rates of development, utilization of inherited glacial features, and resulting morphology
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms