Download or read book Evaluation of the Utility of Gas Tracers to Quantify Preferential Water Flow in the Vadose Zone written by Indhu Muthukrishnan and published by . This book was released on 2000 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Saturation and Air water Interfacial Area Measurements by Partitioning Gas Tracers in the Vadose Zone and Landfills written by Liqing Li and published by ProQuest. This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil water saturation is a very important parameter in the vadose zone and bioreactor landfills. To measure water saturation over large measurement volumes in both systems, the partitioning gas tracer technique (PGTT) was suggested as a useful tool. In this study, we examined the influence of water saturation, Henry's law constant, injected tracer mass, tracer quantification limit, and local rates of mass transfer between air and water on PGTT measurements. A single-region model was used to describe transport of gas-phase tracers. Laboratory-scale partitioning tracer tests were conducted in four different sand packings. The results from the mathematical modeling and laboratory experiments were used to suggest guidelines for minimizing measurement error in field-scale PGTTs for water saturation measurement. We have further assessed the influence of a number of important parameters on PGTT performance in two-dimensional systems: tracer diffusion coefficients, interstitial gas velocity, spatial variations in temperature, and the degree of domain heterogeneity. The molecular diffusion coefficient of conservative and partitioning tracers has a significant influence of PGTT measurements. Gas velocity was examined as a separate operational parameter in the two-dimensional model simulations. Our simulation results suggest that much higher gas velocities might be used to measure S w in field tests without significant loss of measurement accuracy.
Download or read book Practical Handbook of Soil Vadose Zone and Ground Water Contamination written by J. Russell Boulding and published by CRC Press. This book was released on 2016-04-19 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: A synthesis of years of interdisciplinary research and practice, the second edition of this bestseller continues to serve as a primary resource for information on the assessment, remediation, and control of contamination on and below the ground surface. Practical Handbook of Soil, Vadose Zone, and Ground-Water Contamination: Assessment, Prev
Download or read book Vadose Zone Processes written by John S. Selker and published by CRC Press. This book was released on 1999-06-28 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vadose Zone Processes provides a unified, up-to-date treatment on the movement of water through unsaturated media. In addition to covering the basic equations governing the flow and fate of water in unsaturated media, the text covers the biogeochemistry of vadose environments and the statistical description of vadose processes. The authors emphasize maintaining an intuitive understanding of how the results are derived and how they are appropriately applied. This comprehensive and important book will be useful not only to those in traditional fields such as civil engineering, geology, crop science, chemical engineering, agricultural engineering, and hydrology but also in the newer environmental engineering fields including containment transport, pollution remediation, and waste disposal.
Download or read book Conceptual Models of Flow and Transport in the Fractured Vadose Zone written by National Research Council and published by National Academies Press. This book was released on 2001-05-21 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluid flow and solute transport within the vadose zone, the unsaturated zone between the land surface and the water table, can be the cause of expanded plumes arising from localized contaminant sources. An understanding of vadose zone processes is, therefore, an essential prerequisite for cost-effective contaminant remediation efforts. In addition, because such features are potential avenues for rapid transport of chemicals from contamination sources to the water table, the presence of fractures and other channel-like openings in the vadose zone poses a particularly significant problem, Conceptual Models of Flow and Transport in the Fractured Vadose Zone is based on the work of a panel established under the auspices of the U.S. National Committee for Rock Mechanics. It emphasizes the importance of conceptual models and goes on to review the conceptual model development, testing, and refinement processes. The book examines fluid flow and transport mechanisms, noting the difficulty of modeling solute transport, and identifies geochemical and environmental tracer data as important components of the modeling process. Finally, the book recommends several areas for continued research.
Download or read book Handbook of Vadose Zone Characterization Monitoring written by L. Gray Wilson and published by Routledge. This book was released on 2018-05-02 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written in a simple, straightforward manner without complicated mathematical derivatives. Compiled by experienced practitioners, this guide covers topics such as basic principles of vadose zone hydrology and prevalent monitoring techniques. Case studies present actual field experiences for the benefit of the reader. The Handbook provides practitioners with the information they need to fully understand the principles, advantages, and limitations of the monitoring techniques that are available. The Handbook of Vadose Zone Characterization & Monitoring expands and consolidates the useful and succint information contained in various ASTM documents, EPA manuals, and other similar texts on the subject, making it an invaluable aid to new practioners and a useful reference for seasoned veterans in the field.
Download or read book Proceedings of the National Outdoor Action Conference on Aquifer Restoration Ground Water Monitoring and Geophysical Methods written by and published by . This book was released on 1992 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1990 with total page 1254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydropedology written by Henry Lin and published by Academic Press. This book was released on 2012-07-09 with total page 859 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydropedology is a microcosm for what is happening in Soil Science. Once a staid discipline found in schools of agriculture devoted to increasing crop yield, soil science is transforming itself into an interdisciplinary mulch with great significance not only for food production but also climate change, ecology, preservation of natural resources, forestry, and carbon sequestration. Hydropedology brings together pedology (soil characteristics) with hydrology (movement of water) to understand and achieve the goals now associated with modern soil science. - The first book of its kind in the market - Highly interdisciplinary, involving new thinking and synergistic approaches - Stimulating case studies demonstrate the need for hydropedology in various practical applications - Future directions and new approaches are present to advance this emerging interdisciplinary science
Download or read book Environmental Tracers written by Trevor Elliot and published by MDPI. This book was released on 2018-10-08 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Environmental Tracers" that was published in Water
Download or read book EVALUATION OF TRACERS FOR FOLLOWING GROUND WATER FLOW written by Gustaf Aulén and published by . This book was released on 1978 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monitoring in the Vadose Zone written by Lorne Graham Wilson and published by . This book was released on 1980 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Steady state Propane gas Tracer Method for Determining Reaeration Coefficients Chenango River New York written by Nobuhiro Yotsukura and published by . This book was released on 1984 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Innovative Subsurface Remediation written by Mark L. Brusseau and published by . This book was released on 1999 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume evaluates a selection of new technologies for the remediation of groundwater pollution. It covers techniques for both site remediation and characterization, and many of the techniques described are ready for commercial application.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Assessment of Steady state Propane gas Tracer Method for Reaeration Coefficients Cowaselon Creek New York written by and published by . This book was released on 1983 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1989 with total page 1310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
