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Conceptual Models of Flow and Transport in the Fractured Vadose Zone

Conceptual Models of Flow and Transport in the Fractured Vadose Zone PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 0309170990
Category : Science
Languages : en
Pages : 398

Book Description
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.

Conceptual Models of Flow and Transport in the Fractured Vadose Zone

Conceptual Models of Flow and Transport in the Fractured Vadose Zone PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 0309170990
Category : Science
Languages : en
Pages : 398

Book Description
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.

Linking Aquatic Exposure and Effects

Linking Aquatic Exposure and Effects PDF Author: Theo C. Brock
Publisher: CRC Press
ISBN: 1439858926
Category : Science
Languages : en
Pages : 446

Book Description
Time-variable exposure profiles of pesticides are more often the rule than exception in the surface waters of agricultural landscapes. There is, therefore, a need to adequately address the uncertainties arising from time-variable exposure profiles in the aquatic risk assessment procedure for pesticides. Linking Aquatic Exposure and Effects: Risk As

Sustainable Agrochemistry

Sustainable Agrochemistry PDF Author: Sílvio Vaz Jr.
Publisher: Springer
ISBN: 3030178919
Category : Science
Languages : en
Pages : 393

Book Description
This book presents a broad range of technologies for sustainable agrochemistry, e.g. semiochemicals for pest management, nanotechnology for release of eco-friendly agrochemicals, and green chemistry principles for agriculture. It provides a concise introduction to sustainable agrochemistry for a professional audience, and highlights the main scientific and technological approaches that can be applied to modern agrochemistry. It also discusses various available technologies for reducing the negative impacts of agrochemicals on the environment and human health.

Pesticides in Soils

Pesticides in Soils PDF Author: M. Sonia Rodríguez-Cruz
Publisher: Springer Nature
ISBN: 3030905462
Category : Science
Languages : en
Pages : 380

Book Description
This book reviews the occurrence and fate of pesticides in soils, their impact on soil quality and soil ecosystems, and it also provides a comprehensive overview of the latest prevention and remediation strategies of soil contamination. Chapters from expert contributors cover topics such as soil pollution monitoring, the role of dissolved organic matter on the environmental fate of pesticides in soils, the effects of pesticides on soil microbial communities, plant uptake of pesticides from soils, and nano-based pesticides. Particular attention is given to the latest physicochemical and biological technologies developed to immobilize or degrade pesticides, preventing soil and water pollution. Given its scope, the book will appeal to researchers, professionals, including environmental chemists, engineers, ecologists, and policy-makers responsible for soil management.

Hydropedology

Hydropedology PDF Author: Henry Lin
Publisher: Academic Press
ISBN: 0123869870
Category : Technology & Engineering
Languages : en
Pages : 859

Book Description
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

Groundwater 2000

Groundwater 2000 PDF Author: Poul L. Bjerg
Publisher: CRC Press
ISBN: 1000100340
Category : Technology & Engineering
Languages : en
Pages : 547

Book Description
These proceedings, with cd-rom, present a comprehensive overview of advances in groundwater research. The five main topics covered are: aquifers and contaminant distribution; groundwater quality; natural attenuation; remediation technologies and groundwater protection. Groundwater 2000 is a useful resource to both scientists and to those working in the field.

Quantifying Macropore Flow Effects on Nitrate and Pesticide Leaching in a Structured Clay Soil

Quantifying Macropore Flow Effects on Nitrate and Pesticide Leaching in a Structured Clay Soil PDF Author: Martin Larsson
Publisher:
ISBN: 9789157654892
Category : Clay soils
Languages : en
Pages : 34

Book Description


Pesticide Movement to Water

Pesticide Movement to Water PDF Author: British Crop Protection Council
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 436

Book Description


Simulation Models, GIS and Nonpoint-source Pollution

Simulation Models, GIS and Nonpoint-source Pollution PDF Author: Joe Makuch
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 82

Book Description


Computational Methods for Agricultural Research: Advances and Applications

Computational Methods for Agricultural Research: Advances and Applications PDF Author: do Prado, H‚rcules Antonio
Publisher: IGI Global
ISBN: 1616928735
Category : Science
Languages : en
Pages : 523

Book Description
"This book brings computing solutions to ancient practices and modern concerns, sowing the seeds for a sustainable, constant food supply, utilizing cutting-edge computational techniques"--Provided by publisher.