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Physical Sciences and Mathematics Commons™

Open Access. Powered by Scholars. Published by Universities.®

2007

Water Resource Management

Selected Works

Articles 1 - 3 of 3

Full-Text Articles in Physical Sciences and Mathematics

Bear River Watershed Historical Digital Collection, Cheryl D. Walters Jun 2007

Bear River Watershed Historical Digital Collection, Cheryl D. Walters

Cheryl D. Walters

This presentation of a digital collection created from primary archival sources owned by Utah State University accompanied a talk to K-12 history teachers about the importance and use of primary sources.

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Multivariate Analysis Of Groundwater And Soil Data From A Waste Disposal Site, Kevin G. Mumford, John F. Macgregor, Sarah E. Dickson, Richard H. Frappa Jan 2007

Multivariate Analysis Of Groundwater And Soil Data From A Waste Disposal Site, Kevin G. Mumford, John F. Macgregor, Sarah E. Dickson, Richard H. Frappa

Sarah E Dickson

Environmental site investigations often involve the collection and analysis of hundreds of samples producing data sets that contain thousands of data points, which are difficult and time consuming to analyze. Consequently, investigators often focus on key surrogate parameters for site characterization and remedial action planning and assessment, which results in a large portion of the data collected remaining unused. This study presents the application of principal component analysis (PCA) as an efficient statistical technique to examine large environmental data sets through highlighting patterns in a reduced-variable space. In this work, PCA was applied to ground water and soil data collected …

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Water Hammer Dissipation In Pneumatic Slug Tests, David Ostendorf, Don J. Degroot, Philip J. Dunaj Jan 2007

Water Hammer Dissipation In Pneumatic Slug Tests, David Ostendorf, Don J. Degroot, Philip J. Dunaj

David Ostendorf

We model and measure the dissipation of water hammer induced by well casing and water elasticity with rapid valve opening at the start of a pneumatic slug test. The higher-frequency water hammer can obscure slower, aquifer-controlled, underdamped oscillations of the rigid water column, so a quantitative description of the elastic motion improves the ability of a slug test to calibrate the aquifer permeability k. Internal friction attenuates the water hammer, subject to a known headspace pressure at the air/water interface and equilibrium pressure at the top of the well screen. An analytical elastic solution is presented and matched to an …

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