Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"channel form"”.
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The impact of dams, droughts, and tributary drainages on channel form and process : Rio Grande and Rio Chama, NM
… principle in river science maintains that channel systems evolve to convey the sediment loads and water discharges imposed upon them. Changes in sediment and water inputs may result in adjustments to channel geometry, bed texture, and related parameters. Over the last century, geomorphic …
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The Form and Function of Headwater Streams Based on Field and Modeling Investigations in the southern Appalachian Mountains
… the landscape, yet little is known about their form and function in comparison to lowland rivers. Better understanding of their morphology and sediment transport processes will improve understanding of landscape evolution and promote a more complete view of fluvial systems. Therefore, the goal …
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A field evaluation of the formative conditions, wavelengths and heights of alternate bars in alluvial channels
… the fluvial dynamics of straight natural stream channels. In particular, this experimental field study quantitatively assesses: (1) six experimentally derived formulas that predict the conditions for alternate bar formation and equilibrium bar dimensions, and (2) a physically-based nonlinear …
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DEVELOPMENT OF DEM-BASED METHOD FOR MAPPING STREAM POWER DISTRIBUTION OF SOUTHERN ONTARIO STREAMS
… along a stream system, a known determinant of channel form and dynamics, is a valuable component of geomorphic stream assessment procedures that, unlike current methods, is physically-based, time- and cost-effective, objective and repeatable. Continuous maps of stream power can be obtained by …
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The Influence of Bank Vegetation on Flow Structure Within a Small Agricultural Stream: Implications for Channel Stability
… on the flow, sediment transport, and ultimately channel form. Although past studies in fluvial geomorphology have largely ignored the complicated role ofinstream and bank vegetation, some recent studies have attempted to characterize flow in vegetated environments. There is, however, still a need …
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Classifying Single-thread Rivers: A European perspective
… classes according to their channel dimensions and forms, and floodplain characteristics. The classification was developed and tested through three research components. First, a preliminary classification was developed using information entirely derived from a new information …
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Exploring Innovative Methods to Study Inland Waters Using Remote Sensing
… have serious impacts on both water quality and channel form downstream. Climate change is affecting water patterns globally and is worsening both droughts and flooding. As humans continue to alter the global water cycle, having the ability to track these changes on large scales is key to better …
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Sediment Dynamics in a Dryland River: Grain-Size Variations, Erosion Rates, Sediment Mixing and Dam Effects
… rivers because large infrequent floods often set channel form and sediment grain size patterns for long periods of time. The large natural variability in dryland river stream flow causes susceptibility to geomorphic alteration when they are dammed. Cosmogenic nuclide analysis, a tool for …
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Sediment Dynamics in a Dryland River: Grain-Size Variations, Erosion Rates, Sediment Mixing and Dam Effects
… rivers because large infrequent floods often set channel form and sediment grain size patterns for long periods of time. The large natural variability in dryland river stream flow causes susceptibility to geomorphic alteration when they are dammed. Cosmogenic nuclide analysis, a tool for …
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The Dynamics of Coarse Sediment Transfer in an Upland Bedrock River
Bedrock channels in UK upland environments have received relatively little attention despite their importance within upland river systems and their influence on controlling the conveyance of sediment downstream. This thesis aims to quantify and model the transfer of coarse sediment through Trout …
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Structural Studies of the Cold and Menthol Sensing Ion Channel TRPM8
… sensory circuit is mediated by receptors or ion channels expressed at peripheral nerve endings, which respond to specific chemical, thermal, or mechanical stimuli and trigger ion fluxes that lead to firing of action potentials for signal transduction. Understanding the mechanisms by which these …
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Implications of Best Management Practices on Channel Evolution within the Bad River Watershed: West Central South Dakota
Stream channel morphology is highly variable among different landscapes due to differences in geology, topography, climate, and land use. Understanding a river system’s channel morphology is particularly useful due to regional relationships between channel form and sediment conveyance. The Bad …
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Disclose river morphodynamics processes through experiments
… by the scales of sediment transport and bed deformation. It follows that non-linear and non-trivial behavior characterizes the river dynamic. Notwithstanding, great improvements in the fluvial knowledges have been done up to now. Nowadays, fluvial engineer and researchers can take advantage of …