Index Catalog // ScholarsArchive@OSU

Automated water balance procedure for large-scale experimental databases based on soil moisture

Creator:: Grayson, Susana Maria
Abstract:: Based on the determination of the zero-flux plane, a water balance procedure for large-scale experimental databases was automated to estimate the soil water balance based on soil water content distribution with depth through time. The automated procedure was verified using data from the BOREAS project obtained in three Intensive Field...
Resource Type:: Masters Thesis
Full Text:: Water Balance Procedure for Large-Scale Experimental Databases Based on Soil Moisture. Abstract

An economic model of soil compaction in forestry

Creator:: Stewart, Rodney Aloysius
Abstract:: A model is presented which predicts the net present value of a stand level multi-entry harvest plan. The model accounts for potential volume losses due to harvest-related soil compaction. The goal of this project was to answer five economic questions about the issue of soil compaction in forestry. The five...
Resource Type:: Capstone Project

Infiltration of water and its effects on soil erosion : a computational analysis pertaining to central Tunisia

Creator:: Tobbi, Belgacem
Abstract:: The purpose of this study was to use computer analysis of soil and rainfall data to predict the possible occurrence of soil erosion in Central Tunisia. Analysis was done with the program OR-NATURE (M.Ungs et al, 1985) . Central Tunisia was subdivided into northern, central, and southern subzones. Data about...
Resource Type:: Masters Thesis
Full Text:: W 1 1 1 1 1 I 1 1 1 Soil depth: z Figure 2: The infiltration moisture profile (drawn after

Dynamic mathematical model of oxygen and carbon dioxide exchange between soil and atmosphere

Creator:: Ou-yang, Ying
Abstract:: Gaseous transport through soil in the presence of soil microorganisms has been investigated. More recently, modeling of gaseous transport in the unsaturated zone has been investigated. However, the problem of mathematical model of oxygen and carbon dioxide transport through soil, as affected by the climatic conditions, the transport of soil...
Resource Type:: Dissertation
Full Text:: of Philosophy in Soil Science presented on September 27, 1990 Title: Dynamic Mathematical Model of

Interactions between microbial dynamics and transport processes in soils

Creator:: Rockhold, Mark L.
Abstract:: An experimental and numerical modeling investigation was conducted to study interactions between microbial dynamics and transport processes in variably saturated porous media. These interactions are important in a variety of applied problems such as water and wastewater treatment, bioremediation, and oil-field recovery operations. These processes and interactions also have great...
Resource Type:: Dissertation
Full Text:: clay soil (model parameters from Leij et al.. 1999), clean 40/50 Accusand®, and repacked. biomass

An economic analysis of the onsite benefits and costs of reducing soil erosion through conservation tillage in the Camas Prairie region of northern Idaho

Creator:: Bauer, Steven Gerard
Abstract:: The onsite costs and benefits of conservation tillage in the Camas Prairie Region of Northern Idaho were estimated. The evaluation of these costs and benefits included a measurement of the long-term effects of soil erosion on cropland productivity. A model developed by Daniel Taylor (1982) was used as a base...
Resource Type:: Masters Thesis
Full Text:: is a mathematical simulation model. It describes the effects of erosion on soil productivity

The impact of wood variability on the drying rate at different moisture content levels

Creator:: Berberović, Adin
Abstract:: Variability in wood properties causes boards within a stack of lumber to dry at different rates and reach different moisture content levels after drying is completed. The consequence is that the boards will have properties that differ from ones that were intended to be achieved by the drying process. The...
Resource Type:: Dissertation
Full Text:: 1984)….…………………………… 2.2.4.5 Central plane moisture content for homogeneous model using low

Modelling root reinforcement in shallow forest soils

Creator:: Skaugset, Arne E.
Abstract:: A hypothesis used to explain the relationship between timber harvesting and landslides is that tree roots add mechanical support to soil, thus increasing soil strength. Upon harvest, the tree roots decay which reduces soil strength and increases the risk of management -induced landslides. The technical literature does not adequately support...
Resource Type:: Dissertation

Thermodynamics of non-dilute saline solutions in variably saturated porous media

Creator:: Burns, Erick R.
Abstract:: Non-dilute salt strength solutions occur in many near surface geologic environments. In order to better understand the occurrence and movement of the water and salt, mathematical models for this non-ideal fluid need to be developed. Initial boundary value problems may then be solved to predict behavior for comparison with observations....
Resource Type:: Dissertation
Full Text:: better understand the occurrence and movement of the water and salt, mathematical models for this non

Evaluation of the Performance of Lateral Spread Displacement Empirical Models for Subduction Zone Earthquake Case Histories

Creator:: Bunn, Michael
Abstract:: Lateral spread is a pervasive type of liquefaction-induced ground failure that occurs on gentle slopes or near free-faces, such as river channels. Resulting horizontal displacements can reach up to several meters, and can be considerably damaging to foundations, bridges, roadways, pipelines, etc. In the 1990s, Bartlett and Youd (1992a, 1995)...
Resource Type:: Masters Thesis
Full Text:: , Bartlett and Youd (1992a, 1995) introduced an empirical model for predicting liquefaction-induced

ScholarsArchive@OSU

Automated water balance procedure for large-scale experimental databases based on soil moisture

An economic model of soil compaction in forestry

Infiltration of water and its effects on soil erosion : a computational analysis pertaining to central Tunisia

Dynamic mathematical model of oxygen and carbon dioxide exchange between soil and atmosphere

Interactions between microbial dynamics and transport processes in soils

An economic analysis of the onsite benefits and costs of reducing soil erosion through conservation tillage in the Camas Prairie region of northern Idaho

The impact of wood variability on the drying rate at different moisture content levels

Modelling root reinforcement in shallow forest soils

Thermodynamics of non-dilute saline solutions in variably saturated porous media

Evaluation of the Performance of Lateral Spread Displacement Empirical Models for Subduction Zone Earthquake Case Histories

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