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Full-Text Articles in Physical Sciences and Mathematics
Soil And Vegetation Survey Of Antelope Pasture, Curlew Grazing Allotment, Oneida County, Id, Merran Owen, Kari E. Veblen, Thomas A. Monaco, Janis Boettinger
Soil And Vegetation Survey Of Antelope Pasture, Curlew Grazing Allotment, Oneida County, Id, Merran Owen, Kari E. Veblen, Thomas A. Monaco, Janis Boettinger
Wildland Resources Faculty Publications
Antelope Pasture, located in the Black Pine Valley of Oneida County, Idaho, is a 1500-acre portion of the Curlew Grazing Allotment, managed by the Pocatello Field Office of the BLM (Figure 1). The pasture is heavily invaded with exotic annuals such as cheatgrass (Bromus tectorum), halogeton (Halogeton glomeratus), and clasping pepperweed (Lepidium perfoliatum), and grazing is temporarily discontinued. Land-use history of the pasture includes livestock grazing, possible homesteading and cultivation of Agropyron cristatum (crested wheatgrass).
Inverse Method For Simultaneous Determination Of Soil Water Flux Density And Thermal Properties With A Penta-Needle Heat Pulse Probe, Changbing Yang, Masaru Sakai, Scott B. Jones
Inverse Method For Simultaneous Determination Of Soil Water Flux Density And Thermal Properties With A Penta-Needle Heat Pulse Probe, Changbing Yang, Masaru Sakai, Scott B. Jones
Plants, Soils, and Climate Faculty Publications
An accurate method for determination of in situ soil water flux density continues to be the most sought after and yet elusive hydrologic measurement. The penta-needle heat pulse probe (PHPP) employs a central heater needle surrounded by an orthogonal arrangement of four thermistor needles for two-component water flux density estimation. An analytical solution and inverse fitting method are presented for simultaneous estimation of thermal properties and soil water flux density using PHPP measurements. The approach yields estimates of both components of the flux in a plane normal to the axis of the PHPP needles. The method was evaluated using data …
A Novel Analytical Solution To Steady-State Evaporation From Soil And Film Region Thickness, Morteza Sadeghi, Nima Shokri, Scott B. Jones
A Novel Analytical Solution To Steady-State Evaporation From Soil And Film Region Thickness, Morteza Sadeghi, Nima Shokri, Scott B. Jones
Plants, Soils, and Climate Faculty Publications
Evaporation from soil and other porous media constitutes a significant source of water loss affecting global water balance and energy exchange between land and atmosphere. The presence of a shallow water table can lead to sustained water loss that is dependent on porous media hydraulic properties and water table depth among other factors. In this paper, an exact analytical solution to steady state evaporation from porous media is developed using the Brooks-Corey hydraulic conductivity model. The solution is presented in terms of a set of infinite series. An advantage of this solution compared to previous derivations is that the infinite …
Numerical Evaluation Of Subsurface Soil Water Evaporation Derived From Sensible Heat Balance, Masaru Sakai, Scott B. Jones, Markus Tuller
Numerical Evaluation Of Subsurface Soil Water Evaporation Derived From Sensible Heat Balance, Masaru Sakai, Scott B. Jones, Markus Tuller
Plants, Soils, and Climate Faculty Publications
A recently introduced measurement approach allows in situ determination of subsurface soil water evaporation by means of heat-pulse probes (HPP). The latent heat component of subsurface evaporation is estimated from the residual of the sensible heat balance. This heat balance method requires measurement of vertical soil temperature and estimates of thermal properties for soil water evaporation determination. Our objective was to employ numerically simulated thermal and hydraulic processes using constant or diurnally cycled surface boundary conditions to evaluate and understand this technique. Three observation grid spacings, namely, 6 mm (tri-needle HPP), 3 mm (penta-needle HPP) and 1 mm, along with …
Geophysical Imaging Of Watershed Subsurface Patterns And Prediction Of Soil Texture And Water Holding Capacity, H. Abdu, D. A. Robinson, M. Seyfried, Scott B. Jones
Geophysical Imaging Of Watershed Subsurface Patterns And Prediction Of Soil Texture And Water Holding Capacity, H. Abdu, D. A. Robinson, M. Seyfried, Scott B. Jones
Plants, Soils, and Climate Faculty Publications
The spatial distribution of subsurface soil textural properties across the landscape is an important control on the hydrological and ecological function of a watershed. Traditional methods of mapping soils involving subjective assignment of soil boundaries are inadequate for studies requiring a quantitative assessment of the landscape and its subsurface connectivity and storage capacity. Geophysical methods such as electromagnetic induction (EMI) provide the possibility of obtaining high-resolution images across a landscape to identify subtle changes in subsurface soil patterns. In this work we show how EMI can be used to image the subsurface of a ∼38 ha watershed. We present an …
Evaluation Of Areas For Off-Road Recreational Motorcycle Use, Volume Ii: Alternate Soil Suitability Determination Methods, United States Army Corps Of Engineers
Evaluation Of Areas For Off-Road Recreational Motorcycle Use, Volume Ii: Alternate Soil Suitability Determination Methods, United States Army Corps Of Engineers
All U.S. Government Documents (Utah Regional Depository)
Volume I of this report described how to evaluate the soil suitability of areas for off-road recreational motorcycle (trailbike) use on land under the jurisdiction of the Department of the Army. This soil evaluation method relied on the availability of a recent, detailed soil survey. Since such surveys are not always available, Volume II describes alternative methods of evaluating the suitability of soils for trailbike use. Volume II illustrates and describes seven alternative soil evaluation methods. Each method is defined as more or less useful in terms of its reliability and the ease and speed by which its results may …
Soil Losses From Utah Rangeland And Forestland, Lamar R. Mason
Soil Losses From Utah Rangeland And Forestland, Lamar R. Mason
Elusive Documents
No abstract provided.
Irrigation: Soil-Plant-Water Relationships, Soil Conservation Service, Engineering Division
Irrigation: Soil-Plant-Water Relationships, Soil Conservation Service, Engineering Division
All U.S. Government Documents (Utah Regional Depository)
Soil-Plant-Water relationships describes those properties of soils and plants that affect the movement, retention, and use of water essential to plant growth. This publication attempts to provide engineers the basic data necessary to plan and maintain efficient conservation irrigation practices to provide a permanent irrigated agriculture engineering principles and research findings have been screened to give emphasis to the information needed to design, install, and operate irrigation systems on farms or groups of farms.