contamination mapping Articles

  • Fluoride contamination mapping of groundwater in Northern India integrated with geochemical indicators and GIS

    There are many incidents of increasing fluoride concentrations observed in India's groundwater. In the present study, the fluoride content was chemically analysed and integrated with geochemical model WATEQ4F sampled from Allahabad district, Northern India, with other water quality parameters. Geospatial technique was employed to depict the spatial distribution of fluoride concentrations, ...


    By IWA Publishing

  • Flood risk maps 2

    Flood risk is a combination of the likelihood of flooding and the potential consequences arising. There are different maps depending on the chosen hydrological scenario (see flood hazard maps). The flood risk maps should consider information about: the number of potentially affected inhabitants the type of economic activity on the area potentially affected other information ...


    By IWA Publishing

  • Automatic mapping in emergency: a geostatistical perspective

    In the case of a severe nuclear accident, radionuclides may be released into the atmosphere and contaminate large areas. Radiological maps are obtained after converting local measurements into continuous information in space. Ideally, the mapping process should be fully automatic and provide information in real time. This paper is presenting the results obtained from two statistical exercises ...


    By Inderscience Publishers

  • The value of utilising stochastic mapping of food distribution networks for understanding risks and tracing contaminant pathways

    Difficulties in adequately characterising food supply chain topologies contribute major uncertainty to risk assessments of the food sector. The capability to trace contaminated foods forward (to consumers) and back (to providers) is needed for rapid recalls during food contamination events. The objective of this work is to develop an approach for risk mitigation that protects us from an attack on ...


    By Inderscience Publishers

  • Potential for arsenic contamination of rice in Bangladesh: spatial analysis and mapping of high risk areas

    Knowledge of the location and severity of arsenic contamination in Bangladesh is required to develop land and resource management strategies to reduce human exposure to arsenic and arsenic contamination of food and water supplies. Potential high risk areas for arsenic contamination of rice were identified using spatial analysis and modelling. Existing country-wide data on groundwater arsenic ...


    By Inderscience Publishers

  • Investigating and mapping spatial patterns of arsenic contamination in groundwater using regression analysis and spline interpolation technique

    The present study investigates the hypothesis that arsenic concentrations correlate with tubewell depth, and examines the effectiveness of spline interpolation, specifically completely regularized spline (CRS) and spline with tension (SWT) in estimating the magnitude of arsenic contamination in groundwater in Thanh Tri, a densely populated district located in the southern part of Hanoi City, ...


    By IWA Publishing

  • White Paper: Dose Rate Mapping

    The objective of any serious mapping is to obtain a realistic and reliable image of the studied phenomenon. Concerning dose rate, maps are often derived from punctual measurements interpolated using deterministic methods. Sometimes, the choice of the inverse distance squared weighted interpolation is wrongly justified by the fact that the dose rate issued from a punctual source is theoretically ...


    By GEOVARIANCES

  • Developing a contaminated land use strategy

    Landmark's Historical Map and Land Use datasets are invaluable for the identification of potentially contaminated land as part of the 1995 Environment Act. The challenge:Part IIa of the Environmental Protection Act 1990 makes local authorities responsible for the identification of historically contaminated land, which poses a threat to human health or to the environment, within their ...


    By Landmark Information Group

  • European Digital Archive of Soil Maps (EuDASM); Metadata of The soil Maps of Latin America And Caribbean Islands

    MISSION OF THE INSTITUTE FOR ENVIRONMENT AND SUSTAINABILITY The mission of the Institute of Environment and Sustainability is to provide scientific and technical support to EUstrategies for the protection of the environment and sustainable development. Employing an integrated approach tothe investigation of air, water and soil contaminants, its goals are sustainable management of water ...


  • Environmental Data Management for Groundwater Contamination

    ESdat environmental data management software has been used to manage and report on large datasets generated from an investigation of groundwater contamination on an industrial facility in Adelaide. ESdat was used in managing site data and the maintenance of conceptual model and time series outputs at a complex site over an extended period. Leakages of TCE and the subsequent ...

  • Estimation and Mapping of Wet and Dry Mercury Deposition Across Northeastern North America

    Whereas many ecosystem characteristics and processes influence mercury accumulation in higher trophic-level organisms, the mercury flux from the atmosphere to a lake and its watershed is a likely factor in potential risk to biota. Atmospheric deposition clearly affects mercury accumulation in soils and lake sediments. Thus, knowledge of spatial patterns in atmospheric deposition may provide ...


    By Springer

  • What do the data show? Knowledge map development for comprehensive environmental assessment

    Environmental and human health risk assessments benefit from utilizing data that crosses multiple scientific domains. While individual data points may often be readily understood, the total picture can be difficult to envision. This is especially true when there are gaps in the data (e.g., with emerging substances like engineered nanomaterials [ENM]), such that simply presenting only known ...


    By John Wiley & Sons, Ltd.

  • Isatis and Kartotrak, an efficient combination for the characterization of radiological contaminations

    Kartotrak is a GIS platform developed by the CEA (the French Atomic Energy Authority) and Geovariances for real-time characterization of radiological contaminations. Dismantling former nuclear sites requires a preliminary characterization of radiological contamination, for both external areas and nuclear facilities. Such characterization usually relies on several steps: ...


    By Geovariances

  • Geostatistical Sampling Optimization and Waste Characterization of Contaminated Premises

    Abstract This methodological study presents a geostatistical approach suitable for radiological evaluation in nuclear premises. By modelling the spatial continuity of activities, geostatistics provide sound methods to estimate and map radiological activities, together with their uncertainty. The main geostatistical principles are first recalled and illustrated on a real premise ...


    By GEOVARIANCES

  • Geostatistical Methodology For Waste Optimization Of Contaminated Premises

    Summary At the end of process equipment dismantling, the complete decontamination of nuclear facilities requires the radiological assessment of residual activity levels of building structures. As stated by the IAEA: “Segregation and characterization of contaminated materials are the key elements of waste minimization”. From this point of view, the set up of an ...


    By Geovariances

  • Characterisation of arsenic contamination in groundwater by statistical methods

    Statistical investigation on groundwater arsenic concentration data of southwest Bangladesh was performed. Two data sets of 1998–99 and 2002–03 were selected for this analysis. Summary statistics of the data shows that the mean concentration exceeds the Bangladesh limit (0.05 mg/l) in all areas. Normality of arsenic concentration data was checked by frequency histogram, skewness coefficient and ...


    By Inderscience Publishers

  • The Contaminated Land Regime – New Guidance and a New Philosophy

    Keywords: contaminated land, statutory guidance Abstract: This article examines the new contaminated land guidance for England published in April 2012, and the underlying tensions apparent in the philosophy behind the changes made to the previous guidance contained in Defra Circular 01/2006. It looks, in particular, at the approach that the new document takes in relation ...


  • Study offers first-ever map showing groundwater pollution of coastal areas of United States

    The study identified 12 percent of the continental U.S. coastline — including the northern Gulf Coast from Mississippi to the Florida Panhandle, northern Atlantic Coast, and Pacific Northwest — where the once-hidden drainage systems make the ocean most susceptible to freshwater contamination from septic tanks and fertilizer runoff. In contrast, another 9 ...

  • Industrial experience feedback of a geostatistical estimation of contaminated soil volumes

    Abstract: Geostatistics meets a growing interest for the remediation forecast of potentially contaminated sites (both chemical/radiological): pollution mapping, contaminated volumes estimation, integration of auxiliary information, setup of adaptive sampling strategies. This interest has been supported in France by the GeoSiPol association (Geostatistics for Polluted Sites) created in ...


    By Geovariances

  • Quantification of exposure to fecal contamination in open drains in four neighborhoods in Accra, Ghana

    In low-income countries, rapid urbanization adds pressure to already stressed water and sanitation systems that are critical to the health of communities. Drainage networks, designed for stormwater but commonly used for disposing of waste, are rarely covered completely, allowing residents to easily come into contact with their contents. This study used spatial mapping, documentation of ...


    By IWA Publishing

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