Index Catalog // ScholarsArchive@OSU

Spillway Staging and Selective Sediment Deposition in Sand Storage Dams

Creator:: Viducich, Jonathan M. G.
Abstract:: Rainfall scarcity and variability present serious challenges to water security for many rural communities throughout the world's drylands. Sand dams--weirs built across ephemeral or seasonal rivers--provide an appropriate water harvesting and storage option for many regions. The structures quickly fill with sediment during rainy season flow events and store water...
Resource Type:: Masters Thesis

The field edge flux paradox

Creator:: Barr, Colleen M.
Abstract:: Precision irrigation has made spatially explicit water management a reality. However, detailed knowledge about the spatially variable evapotranspiration is often unavailable. One example location where we can begin to understand the impact of spatial variability on evapotranspiration is at the field edge, which contains a sharp discontinuity in surface conditions....
Resource Type:: Masters Thesis

Incipient resuspension of silt-clay deposits in oscillatory and unidirectional flows

Creator:: Talebbeydokhti, Nasser
Abstract:: Incipient motion of cohesive sediment and the role of flow parameters were investigated for separate and combined unidirectional and oscillatory flows. Sediment from Sturgeon Lake, mainly silt and clay with organic matter, was used as bed material In recirculating and wave flumes. Bench-type experiments indicated that when the submerged sediment...
Resource Type:: Dissertation

Water content and electrical conductivity profile measurements for dispersive media using enhanced time domain and frequency domain models

Creator:: Flugstad, Benjamin A.
Abstract:: Water conservation and water quality are rapidly increasing in importance in all areas of the world. The ability to accurately measure soil water content and salinity, over a wide variety of conditions, is key to meeting this need. A set of forward prediction models and waveform interpretation algorithms to extract...
Resource Type:: Dissertation

Computer simulation to control environmental impact of water and nitrate leaching in furrow irrigated fields

Creator:: Raja, Syed Navaid
Abstract:: Nitrate contamination in ground and surface waters is of great concern to environmentalists. A two-dimensional model of water and solute movement in soils was used to test the usefulness and relative advantages of a two-dimensional model over a one dimensional model for analysis of deep percolation and nitrate leaching in...
Resource Type:: Masters Thesis

Water management effects on birdsfoot trefoil seed production

Creator:: García-Díaz, Carlos Alberto
Abstract:: There is no information available on water management of birdsfoot trefoil grown for seed. Information is also not available describing how to minimize seed losses due to shattering in order to obtain consistently high birdsfoot trefoil seed yields. The objectives of this research are to: (i) quantify crop water use,...
Resource Type:: Dissertation

Geostatistics applied to groundwater contaminant plume characterization

Creator:: Cooper, Richard Mark
Resource Type:: Masters Thesis

Bacteria die-off in stream sediments

Creator:: Sherer, Brett Micheal
Abstract:: The purpose of this study was to evaluate the impact sediment has on the survival of bacteria in a typical rangeland stream. This information is an important component in determining a time integrated prediction of bacterial numbers in the stream sediment and overlying water. Bacterial survival in stream is a...
Resource Type:: Masters Thesis

Modeling the uncertainty of evapotranspiration estimates

Creator:: El Khoury, Laureine
Abstract:: Under today's environmental conditions and with the increasing worldwide competition for water, errors in irrigation management decisions can be costly. Therefore, providing both accurate evapotranspiration estimation on a daily basis and estimation of the magnitude of error associated with this estimate is vital for informed water management decisions that allow...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Spillway Staging and Selective Sediment Deposition in Sand Storage Dams

The field edge flux paradox

Incipient resuspension of silt-clay deposits in oscillatory and unidirectional flows

Water content and electrical conductivity profile measurements for dispersive media using enhanced time domain and frequency domain models

Computer simulation to control environmental impact of water and nitrate leaching in furrow irrigated fields

Water management effects on birdsfoot trefoil seed production

Geostatistics applied to groundwater contaminant plume characterization

Bacteria die-off in stream sediments

Modeling the uncertainty of evapotranspiration estimates

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