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An economic analysis of soil conservation limitations on the intensity of cropland use in Ohio /Nabaee-Tabriz, Saeed January 1985 (has links)
No description available.
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Plunge pool erosion in cohesive channels below a free overfall /Van der Poel, Petrus W. January 1985 (has links)
No description available.
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Soil erodibility indices for Southern Quebec soils derived under variable intensity rainfall simulationMichaud, Aubert Raymond January 1987 (has links)
No description available.
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The Effect of Management on Erosion of Civil War Battlefield EarthworksAzola, Anthony 26 February 2001 (has links)
Since 1936 National Park Service has been charged with preserving Civil War Earthworks while allowing public access. Soil erosion, both natural and human-induced, is a major concern facing the preservation of the earthworks. Currently, the National Park Service is committed to preserving these earthworks for future generations by determining which maintenance activities cause the least soil erosion. This study was undertaken to determine which management practice; burned, mowed, park-forest, forested, or trimmed, best minimized soil erosion. A secondary objective was to determine how several empirical formulas (e.g. Universal Soil Loss Equation) and one field estimate (e.g. erosion pins) compared soil erosion trends for the 5 treatments. A third objective of this study was to gather information regarding the soil development which has occurred during the 135 + years since the earthworks were constructed.
Earthworks managed by prescribed burning suffered the greatest erosion rates while the forested earthworks eroded the least. The trimmed and mowed management regimes were not significantly different and would provide adequate erosion protection while the forested treatment had significantly less erosion. Based on the empirical models, erosion was primarily a function of ground cover; on the other hand, rain intensity was highly influential for erosion as measured by the erosion pins. All of the erosion estimation methods concurred that the burned treatment should be avoided due to the high erosion rates while the erosion pins indicated that the park-forest treatment could potentially have erosion problems as well. Soil profile descriptions from the earthworks revealed that A horizon depths on the earthworks were not significantly different then the A horizons found on the relatively undisturbed adjacent forest floor and that subsurface soil structure has begun to develop on earthwork soils. / Master of Science
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Development of the multi-channel variable stress permeameterArnold, Terrence Eugene January 2011 (has links)
Photocopy of typescript. / Digitized by Kansas Correctional Industries
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Studies on interrill sediment delivery and rainfall kinetic energyRezaur, Rahman Bhuiyan. January 1999 (has links)
published_or_final_version / Civil Engineering / Doctoral / Doctor of Philosophy
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The adoption of conservation practices by hill farmers, with particular reference to property rights : a case study in northern ThailandSathirathai, Suthawan January 1992 (has links)
No description available.
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Soil Erosion Control after WildfireDeneke, Fred 07 1900 (has links)
6 pp.
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Soil Erosion Control after WildfireDeGomez, Tom 12 1900 (has links)
Revised; Originally Published: 2002 / 6 pp.
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Characterizing soil erosion potential using electrical resistivity imagingKarim, Md Zahidul January 1900 (has links)
Master of Science / Department of Civil Engineering / Stacey Tucker-Kulesza / 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 this study was to characterize soil erosion potential by correlating the in situ ER of soil with erodibility measured in the Kansas State University Erosion Function Apparatus (KSU-EFA). ER surveys were conducted at eleven bridge sites. Soil samples were also collected at each site with a drill rig from the surface to three meters using thin-walled Shelby tubes. Five samples were collected at each site, tested in the KSU-EFA, and classified according to the Unified Soil Classification System. Analysis showed that the rapid in situ data obtained from an ER survey can be used to categorize the level of erodibility. As such, ER surveys may be used to characterize the soils at future bridge sites or prioritize existing bridges for additional testing to measure the scour potential. Moreover, ER surveys may be used to determine which existing bridges should be closed or closely monitored for scour potential during a flood event. Analytical models to predict critical shear stress using ER and other soil parameters were constructed.
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