Download or read book Geospatial and Statistical Analysis of Anthropogenic Groundwater Contamination written by Jessica Warrack and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "We use geospatial and statistical analysis to identify areas where there may be gaps in current legislation that protects aquifers and to identify anthropogenic contamination sources and pathways. Specifically, we focus on phosphorus (P) concentrations in groundwater and total dissolved solids (TDS) concentrations in groundwater in California. The results obtained from the analysis of these datasets can be used to guide sustainable water and ecosystem management policies and inform future groundwater monitoring efforts. Excess P in surface waters is a main driver of eutrophication, but P monitoring in groundwater is often overlooked because it was historically assumed that P is immobile in groundwater. To examine the risk P in groundwater poses to surface waters and ecosystems, we compile and analyze 161,321 groundwater P measurements from 12 different countries. We find that all 12 countries report groundwater P concentrations high enough to potentially cause ongoing or continued eutrophication in sur-face waters. Additionally, in Canada and the United States, we find that 93% of total P (TP) samples are found within 50 km of crop/pastureland. We also find a correlation between distance from the closest oil and gas well and elevated TP concentrations in the Canadian provinces of Alberta and Ontario. We focus on these provinces because there is a high density of oil and gas wells and of TP concentrations >0.1 mg P/L. These case studies indicate the need to further investigate the role of agriculture and oil and gas wells on groundwater impacts by P and other contaminants. The global da-ta synthesis shows that there are many data gaps limiting our ability to assess groundwater P contamination, including their sources and pathways. Understanding the sources and pathways for groundwater contamination is important for sustainable groundwater management practices and protection. Total dissolved solids (TDS) concentrations represent minerals, salts, metals cations, or anions dissolved in water and is often taken as an indicator for overall ground-water quality. We use 216,754 total dissolved solids (TDS) concentration measurements in groundwater in California, United States, to examine the effectiveness of cur-rent groundwater legislation with respect to the base of fresh water (BFW), which is commonly used to identify the vertical extent to which aquifers are subject to ground-water management in the state. The definition for "fresh" water varies between regulating bodies but is generally taken to range from 1,000 to 3,000 mg/L. We analyze trends in the TDS dataset and find that we cannot estimate the BFW in 73% of California. We are able to estimate the BFW in 22% of the Central Valley, a key agricultural region with large groundwater demands and many critically overdrafted ground-water basins. Using a TDS limit of 3,000 mg/L, we estimate the shallowest BFW to be 155 m below ground surface in Kern County and the deepest BFW to be 589 m below ground surface in Stanislaus County. Our analysis demonstrates that geospatial and statistical analysis are useful for managing and analyzing groundwater contamination data. Specifically, there are opportunities for enhanced and strategic management and monitoring of groundwater, focusing on P and TDS. Currently, limitations in the availability of groundwater quality data make the delineation of usable groundwater and the extent of groundwater contamination challenging to identify. Moreover, implementing groundwater management that simultaneously considers and balances impacts of agricultural and oil and gas activities is needed. The results from this thesis can be used to design data-driven groundwater management programs and strategies that protect groundwater re-sources around the world"--

Download or read book Groundwater Contamination in Coastal Aquifers written by Senapathi Venkatramanan and published by Elsevier. This book was released on 2022-06-22 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Groundwater Contamination in Coastal Aquifers: Assessment and Management first describes groundwater contamination in coastal aquifers and then delves into specific topics surrounding various hydrogeochemical processes. Next, the book covers case studies of groundwater quality assessment using recent techniques, explains the various pollutants and contaminants in coastal aquifers, and covers management and remediation methods to control contamination in coastal aquifers. This key reference encompasses various topics in broader perspectives on groundwater contamination in coastal aquifers, providing a significant contribution to the field of hydrogeology. Presents global case studies that show the reader how this issue is affecting sites around the world Includes a remediation plan that solves problems surrounding the management of groundwater, water treatment techniques, and the management of available groundwater resources Provides advanced techniques that can be applied and used as methodologies for solving groundwater issues

Download or read book Geospatial Analytics for Environmental Pollution Modeling written by Fayma Mushtaq and published by Springer Nature. This book was released on 2023-12-01 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to provide a comprehensive study on various aspects of environmental pollution dynamics using geospatial technology and modeling techniques. The utility of geospatial technology will be demonstrated for the effective study of environmental pollution, as space and location are very important for effective environmental health surveillance. The timeliness of the work is due to the increasing relevance of geospatial technology applications in environmental health investigations. Moreover, different types of pollution are covered in detail, including air and soil, all of which are analyzed using latest Remote Sensing and GIS technology. The basics of environmental pollution and its impacts are covered in the book's first part, while the second part focuses on the use of geospatial technology in investigating and modeling various instances of environmental pollution. The third part discusses policy measures for mitigating environmental pollution hazards, using geospatial analyses and data to craft informed policy decisions. The primary audience for the book is researchers working in the field of environmental pollution with incorporation of geospatial technology, including upper-level undergraduate and graduate students taking courses in remote sensing and its environmental applications. The secondary audience is academicians, planners, environmentalists and policymakers working in the field of environment protection and management.

Download or read book Spatial Modeling and Assessment of Environmental Contaminants written by Pravat Kumar Shit and published by Springer Nature. This book was released on 2021-02-05 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book demonstrates the measurement, monitoring and mapping of environmental contaminants in soil & sediment, surface & groundwater and atmosphere. This book explores state-of-art techniques based on methodological and modeling in modern geospatial techniques specifically focusing on the recent trends in data mining techniques and robust modeling. It also presents modifications of and improvements to existing control technologies for remediation of environmental contaminants. In addition, it includes three separate sections on contaminants, risk assessment and remediation of different existing and emerging pollutants. It covers major topics such as: Radioactive Wastes, Solid and Hazardous Wastes, Heavy Metal Contaminants, Arsenic Contaminants, Microplastic Pollution, Microbiology of Soil and Sediments, Soil Salinity and Sodicity, Aquatic Ecotoxicity Assessment, Fluoride Contamination, Hydrochemistry, Geochemistry, Indoor Pollution and Human Health aspects. The content of this book will be of interest to researchers, professionals, and policymakers whose work involves environmental contaminants and related solutions.

Download or read book Assessing Ground water Vulnerability to Contamination written by Michael J. Focazio and published by . This book was released on 2002 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book GIS and Geostatistical Techniques for Groundwater Science written by Dr. Senapathi Venkatramanan and published by Elsevier. This book was released on 2019-05-28 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: GIS and Geostatistical Techniques for Groundwater Science provides a detailed synthesis of the application of GIS and geostatistics in groundwater studies. As the book illustrates, GIS can be a powerful tool for developing solutions for water resource problems, assessing water quality, and managing water resources. Beginning with an introduction to the history of GIS and geostatistical techniques in groundwater studies, the book then describes various spatial techniques, including case studies for various applications, from quality assessment, to resource management. This book assembles the most up-to-date techniques in GIS and geostatistics as they relate to groundwater, one of our most important natural resources. Provides details on the application of GIS and statistics in groundwater studies Includes practical coverage of the use of spatial analysis techniques in groundwater science Bridges the gap between geostatistics and GIS as it relates to groundwater science and management Offers worldwide case studies to illustrate various techniques and applications in addressing groundwater issues

Download or read book Groundwater Quality written by Harriet Nash and published by Springer. This book was released on 1994-10-31 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Groundwater quality monitoring and testing is of paramount importance both in the developed and developing world. This book presents a series of papers illustrating the varied nature of current research into groundwater quality. Urban and rural supplies are covered through a case history approach, and the importance of remedial action to prevent deterioration is emphasized.

Download or read book Geospatial Analyses of Groundwater Depletion and Contamination written by Aynaz Lotfata and published by . This book was released on 2019 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overarching objective of this dissertation was to study groundwater resources on global, local, and regional scales. The first objective of this dissertation was to analyze the groundwater nitrate contamination in the Edwards-Trinity and the Southern High-Plains aquifers of Texas. The second was to study groundwater quality in terms of seawater intrusion in the California Coastal Basin, Upper Floridian, and North Atlantic Coastal Plain aquifers. This dissertation also provided a comprehensive overview of the groundwater level in basins at the global scale and further analyzed agricultural activities on groundwater storage in small and large basins. To achieve first objective, Ordinary Least Square (OLS) and Geographically Weighted Regression (GWR) models were used to study the relationship between groundwater nitrate contamination and land use. This dissertation further identified dominant groundwater types using USGS well data and to estimate the extent of seawater intrusion in terms of dominant ions and ocean salinity in the United States coastal aquifers. Finally, groundwater storage anomaly was quantified using Gravity Recovery and Climate Experiment (GRACE) derived variations in total Terrestrial Water Storage (TWS) and the Global Land Data Assimilation System (GLDAS). Land cover data representing a percentage of irrigated lands using groundwater resources was used to study agricultural activities on groundwater storage. Groundwater nitrate contamination was positively associated with cotton production in Southern High-Plains and Edwards-Trinity aquifers. The nitrate concentrations tended to increase as the well-depth decreased in both aquifers. Results showed that the dominant ions in the study area were Na+ and Cl- . The study concluded that Na-Cl and mixed Ca-Mg-Cl were dominant water types in the United States' coastal aquifers. Results also indicated that seawater intrusion is occurring in the US coastal aquifers. Groundwater depletion has increased in southern Asia, western North America, and southwestern Europe due to groundwater withdrawal for agricultural use. However, farming practice is not the main reason for groundwater scarcity in South America, Africa, and Australia.

Download or read book Groundwater Contamination written by National Research Council and published by National Academies Press. This book was released on 1984-01-01 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: And ConclusionsReferences; III METHODS OF WASTE DISPOSAL ; 4 Shallow Land Burial of Municipal Wastes; Introduction; Leachate Characteristics; Gas Production; Hydrogeologic Criteria; Unsaturated Flow; Site Size; Water Balance; Trench Covers; Trench Liners; Monitoring; Monitoring Methodology; Verification of Contamination; Conclusions; References; 5 Deep Burial Of Toxic Wastes; Introduction; Methods of Disposal; Advantages and Disadvantages of Deep Burial; A Hypothetical Repository; Hydrogeologic Properties of Rocks at Depth; General Data from Wells and Test Holes; Geochemical Evidence.

Download or read book Geostatistical and Geospatial Approaches for the Characterization of Natural Resources in the Environment written by N. Janardhana Raju and published by Springer. This book was released on 2015-11-30 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings of the IAMG 2014 conference in New Delhi explore the current state of the art and inform readers about the latest geostatistical and space-based technologies for assessment and management in the contexts of natural resource exploration, environmental pollution, hazards and natural disaster research. The proceedings cover 3D visualization, time-series analysis, environmental geochemistry, numerical solutions in hydrology and hydrogeology, geotechnical engineering, multivariate geostatistics, disaster management, fractal modeling, petroleum exploration, geoinformatics, sedimentary basin analysis, spatiotemporal modeling, digital rock geophysics, advanced mining assessment and glacial studies, and range from the laboratory to integrated field studies. Mathematics plays a key part in the crust, mantle, oceans and atmosphere, creating climates that cause natural disasters, and influencing fundamental aspects of life-supporting systems and many other geological processes affecting Planet Earth. As such, it is essential to understand the synergy between the classical geosciences and mathematics, which can provide the methodological tools needed to tackle complex problems in modern geosciences. The development of science and technology, transforming from a descriptive stage to a more quantitative stage, involves qualitative interpretations such as conceptual models that are complemented by quantification, e.g. numerical models, fast dynamic geologic models, deterministic and stochastic models. Due to the increasing complexity of the problems faced by today’s geoscientists, joint efforts to establish new conceptual and numerical models and develop new paradigms are called for.

Download or read book Groundwater Contamination and Analysis at Hazardous Waste Sites written by Suzanne Lesage and published by CRC Press. This book was released on 1992-08-13 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference describes investigations of the fate of toxic chemicals emanating from hazardous waste sites and contaminating groundwater, discussing the hydrogeochemistry at US, Canadian, Australian, and German sites to reflect the different approaches used around the world.;Written by over 30 international experts in the field, Groundwater Contamination and Analysis at Hazardous Waste Sites: presents case histories spanning 30 years of activities by the United States Geological Survey's Organics in Water project, including studies of pesticide, munition, and wood preservative residues contaminating groundwater; outlines the U.S. Environmental Protection Agency's SW-846 methods of analysis for groundwater samples taken at hazardous waste sites; details the analytical requirements for qualitative surveys, regulatory compliance, and research programs; examines the use of statistics at site investigations and waste disposal facilities as well as data interpretation techniques such as multivariate plots; covers the application of a portable gas chromatograph in studying a vapor-phase plume of trichloroethylene, giving tips about problems that may lead to variability in the data; and explores dense nonaqueous-phase liquid dissolution using Raoult's law, biotransformation of the dissolved constituents, and their sorption to aquifer materials.;Extensively illustrated with more than 250 figures, tables, and display equations, Groundwater Contamination and Analysis at Hazardous Waste Sites is a practical tool for pollution control and environmental engineers, hydrogeologists, analytical chemists, and upper-level undergraduate and graduate students in these disciplines.

Download or read book Groundwater Contamination and Remediation written by Timothy D. Scheibe and published by MDPI. This book was released on 2018-12-07 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Groundwater Contamination and Remediation" that was published in Water

Download or read book Geostatistics and Geospatial Technologies for Groundwater Resources in India written by Partha Pratim Adhikary and published by Springer Nature. This book was released on 2021-02-26 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers essential information on geospatial technologies for water resource management and highlights the latest GIS and geostatistics techniques as they relate to groundwater. Groundwater is inarguably India's single most important natural resource. It is the foundation of millions of Indian farmers' livelihood security and the primary source of drinking water for a vast majority of Indians in rural and urban areas. The prospects of continued high rates of growth in the Indian economy will, to a great extent, depend on how judiciously we can manage groundwater in the years to come. Over the past three decades, India has emerged as by far the single largest consumer of groundwater in the world. Though groundwater has made the country self-sufficient in terms of food, we face a crisis of dwindling water tables and declining water quality. Deep drilling by tube wells, which was once part of the solution to water shortages, is now in danger of becoming part of the problem. Consequently, we urgently need to focus our efforts on the sustainable and equitable management of groundwater. Addressing that need, this book presents novel advances in and applications of RS–GIS and geostatistical techniques to the research community in a precise and straightforward manner.

Download or read book Groundwater Vulnerability to Agrochemicals written by Rodney Craig Soper and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This investigation presents an analysis of groundwater vulnerability in three mid-Missouri counties that represent an agricultural production region that is physiographically and hydrogeologically complex. The goals of this study are to (1) provide a spatial analysis of the elements and conditions under which groundwater of the study area may become contaminated, and (2) develop a model and decision support process for identifying particular portions of these counties that are vulnerable to agrochemical applications. Geospatial analysis via a GIS is based on seven hydrogeological elements that are incorporated into the DRASTIC model, a groundwater pollution potential evaluation system. Statistical data grouping is differentiated into three categorical index ranges. Resulting distribution of data indicates high vulnerability exists for over 32 percent of the study area. Moderately vulnerable areas comprise nearly 39 percent of the area, and the least vulnerable areas make up the remaining 29 percent of the total area. A GIS-based groundwater vulnerability map generated by this process provides a decision support mechanism for landowners, agricultural producers, and state and local agencies engaged in investigating the relationship between hydrogeologic-anthropogenic system elements and protective ecosystem planning and management efforts.

Download or read book Groundwater Contamination written by Chester D. Rail and published by CRC Press. This book was released on 2000-04-14 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully updated and expanded into two volumes, the new edition of Groundwater Contamination explains in a comprehensive way the sources for groundwater contamination, the regulations governing it, and the technologies for abating it. Volume 1 covers all major contaminants and explains the hydrology and data used to determine the extent of pollution. Volume 2 discusses aquifer management, including technologies to control and stabilize multiple influxes into the water table. Among the many new features of this edition are a full discussion of risk assessment, the preparation of groundwater protection plans, and references linking the text to over 2,300 water-related Web sites.

Download or read book Statistical estimation and visualization of groundwater contamination data written by and published by DIANE Publishing. This book was released on with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced Geospatial Practices in Natural Environment Resource Management written by Vohra, Rubeena and published by IGI Global. This book was released on 2024-03-18 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today, the relentless depletion of natural resources has reached a critical juncture, demanding innovative solutions. Advanced Geospatial Practices in Natural Environment Resource Management dives into the intricate tapestry of issues jeopardizing ecosystems. This book systematically dissects the fundamental drivers, traces the historical evolution, and elucidates the underlying causes that have led to this precarious point. From deforestation to pollution, from climate change to habitat destruction, these challenges are multifaceted. By harnessing the power of data-driven decision-making and predictive modeling, this book advocates for a profound shift in the approach to environmental issues. This book also explores the complexities of water, soil, and air-related challenges, offering technically sound solutions that strike a balance between legislative, economic, social, and political considerations. The holistic approach championed in these pages holds the potential to benefit governments, businesses, and communities alike. This book is ideal for a diverse audience, including students, scholars, and researchers, as well as environmental science enthusiasts, geospatial technology professionals, and AI/ML practitioners. Policymakers, environmental engineers, and professionals engaged in governmental and corporate sustainability initiatives will also discover practical solutions to address the pressing challenges.