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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 20 of 59 for “"erodibility"”.
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The Effects of Benthic Organisms on Intertidal Sediment Erodibility
… was employed to account for the variation in erodibility using biotic and abiotic sediment characteristics. Small bioturbating macrofauna, predominantly freely motile species < 5 mm in size, destabilized surface sediments (-Ʈc and +ER), whereas microbes and organic matter were resuspended …
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Effect of exposure on the erodibility of intertidal mudflats
… An understanding of how exposure alters the erodibility of sediment on intertidal flats is critical to predicting the resilience of intertidal zones into the future during which sea-level rise is believed to exacerbate erosion in low-lying areas. Sediments were collected from an intertidal …
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Runoff, infiltration and soil erodibility studies in the Otutira catchment
… hence promote runoff. (3) Flume studies of the erodibility of pumice soils indicate that soil particles are easily entrained by running water, but that plant roots inhibit this process. Analysis of data from the three experiments indicates that land development should be carried out so that: (a) …
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Revisiting Rock Mass Indices: Improving and Applying the Measurement of Erodibility
Erodibility is an important factor in studies of geomorphology. Along with other factors such as climate, time, and tectonics, it contributes to the shape and evolution of landscapes. Several methods exist to quantify erodibility that examine rock mass properties such as fracture characteristics …
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Changes in Streambank Erodibility and Critical Shear Stress Due to Surface Subaerial Processes
Previous studies have shown that soil erodibility and critical shear stress are highly influenced by weathering processes such as freeze-thaw cycling and wet-dry cycling. Despite over forty years of research attributing changes in soil properties over time to climate-dependent variables, little …
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Variability of soil erodibility: its relationship to topography and soil properties in cultivated landscape
The hypothesis of this thesis is that soil erodibility varies systematically with landscape topography. This hypothesis was tested by using a portable rainfall simulator to measure the relative soil erodibility at five slope positions along eleven slope transects on fallow agricultural land in …
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Impact of Freeze-Thaw Cycles on Porosity Change in Shalles and Its Implications on Erodibility
… of rapid shale deterioration and increased erodibility, highlighting the need for protective strategies during construction and maintenance to ensure stability. Understanding these dynamics is essential for predicting erosion and managing environmental and infrastructure safety issues …
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The determination of surface mine soil erodibility factors for two soils in southern West Virginia
… replicated plots to determine surface mine soil erodibility factors for two distinctly different soils in southern West Virginia. Other variables included in the study were detailed soil descriptions for each site, initial and final soil moistures, plot rainfall distributions and the particle …
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Evaluation of an In Situ Measurement Technique for Streambank Critical Shear Stress and Soil Erodibility
… streambank critical shear stress (Ï c) and soil erodibility (kd). Previous research showed streambank kd and Ï c can vary by up to four orders of magnitude at a single site; therefore, it is essential to determine if the large range is due to natural variability in soil properties or errors due …
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Influence of Geotechnical Properties on Sediment Dynamics, Erodibility, and Geomorphodynamics in Coastal Environments Based on Field Measurements
… quantitatively related to sediment transport and erodibility. Also, to date there is no framework available for collecting direct measurements of these properties for estimating initiation of motion and erosion rates. Here, it is postulated that improving the ability to measure geotechnical …
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Numerical and experimental evaluation of the erodibility of particle packings with surface treatments and spring reinforcements using the discrete element method
Chapter 4. The erodibility of homogeneous two-dimensional spherical particle packings subjected to added mass surface treatments was explored using a combination of physical flume experiments and the discrete element method (DEM). Packings composed of spherical glass particles, with and without …
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Erosão superficial em taludes de corte em solo Residual de Gnaisse
… where, by means of test results, the relative erodibility of various layers of gneissic residual soils was compared. Also in this part, an attempt was made to correlate the relative erodibility observed in the tests with other soil properties. The second part deals with field observations in …
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Analysis of soil erodability and rainfall erosivity on the Soutpansberg Range, Limpopo Province, South Africa
… the aim of this research was to analyse soil erodibility and rainfall erosivity on the Soutpansberg range to establish the characteristics of the factors that influence soil erosion. The specific objectives were to classify geomorphic features of the Soutpansberg range; to characterise the …
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Probabilistic Characterization of Sediments Using a Combined Geotechnical and Geophysical Approach
… parameters such as sediment strength or erodibility. This dissertation addresses these limitations by developing and integrating novel probabilistic frameworks utilizing data from Portable Free Fall Penetrometers (PFFP) and Chirp sub-bottom profilers for enhanced shallow-water sediment …
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Evaluation of the Jet Test Method for determining the erosional properties of Cohesive Soils; A Numerical Approach
… require field measurements to determine the soil erodibility since soil characteristics are highly variable between sites, especially for cohesive soils. The submerged jet test device is an in situ method of determining the critical shear stress and soil erodibility of cohesive soils. A constant …
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Characterizing soil erosion potential using electrical resistivity imaging
The erosion rate, or erodibility, of soil depends on many soil characteristics including: plasticity, water content, grain size, percent clay, compaction, and shear strength. Many of these characteristics also influence soil in situ bulk electrical resistivity (ER) measurements. The objective of …
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The Effects of Vegetation on Stream Bank Erosion
… This goal was addressed by measuring the erodibility and critical shear stress of rooted bank soils in situ using a submerged jet test device. Additionally, several soil, vegetation, and stream chemistry factors that could potentially impact the fluvial entrainment of soils were measured. …
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