Conceptual Models of Flow and Transport in the Fractured Vadose Zone

Häftad, Engelska, 2001

AvNational Research Council,and Resources Commission on Geosciences, Environment,Board on Earth Sciences and Resources,U.S. National Committee for Rock Mechanics,Panel on Conceptual Models of Flow and Transport in the Fractured Vadose Zone

1 179 kr

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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.

Produktinformation

Utgivningsdatum2001-05-21
Mått152 x 229 x 25 mm
Vikt640 g
FormatHäftad
SpråkEngelska
Antal sidor398
FörlagNational Academies Press
ISBN9780309073028

Tillhör följande kategorier

Geologi inom Naturvetenskap och teknik

1 Front Matter; 2 Executive Summary; 3 Conceptual Models of Flow and Transport in the Fractured Vadose Zone; 4 Development of the Conceptual Model of Unsaturated Zone Hydrology at Yucca Mountain, Nevada; 5 Conceptual Model of Vadose-Zone Transport in Fractured, Weathered Shales; 6 Evaluation of Conceptual and Quantitative Models of Fluid Flow and Chamical Transport in Fractured Media; 7 Uniform and Preferential Flow Mechanisms in the Vadose Zone; 8 Modeling Macropore Flow in Soils: Field Validation and Use for Management Purposes; 9 Free-Surface Films; 10 What Do Drops Do? Surface Wetting and Network Geometry Effects on Vadose-Zone Fracture Flow; 11 Investigating Flow and Transport in the Fractured Vadose Zone Using Environmental Tracers; 12 Lessons from Field Studies at the Apache Leap Research Site in Arizona; 13 Parameterization and Upscaling in Modeling Flow and Transport in the Unsaturated Zone of Yucca Mountain; 14 Appendix A: Workshop Attendees; 15 Appendix B: Invited Presentations; 16 Appendix C: Panel Biographies; 17 Color Plates

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