gis modeling Articles

  • Integrating GIS and Hydraulic Modelling in Urban and Rural Applications

    Overview In the UK, numerical Hydraulic Modelling of the urban environment, water networks and rivers plays a vital role in providing the UK Water Industry with solutions for protecting the environment, meeting UK Government and European Regulations, meeting OPEX and CAPEX business targets, and improving the efficiency of Water Companies in managing their assets. Similarly, the UK water ...


    By Innovyze

  • Two Detector Solution to Analyzing Sulfur

    Sulfur compounds are reactive, corrosive to pipes, and destructive to catalysts in petroleum refineries. Sulfur emission are strictly regulated globally. When released into the atmosphere sulfur dioxide converts to sulfuric acid resulting in adverse effects on human health and the environment. Sulfur detection is found useful in many other industries; therefore, detection of sulfur compounds in ...


    By Restek Corporation

  • A GIS-based regional energy-environment policy model

    This paper describes a regional energy-environment modelling approach that explicitly takes into account the spatial distribution of production and demand activities, with their associated emissions. Indeed, some of the information used at a regional level has a spatial representation (e.g. district heating, electricity grid, natural gas network, traffic, public transport, etc.). We have defined ...


    By Inderscience Publishers

  • Integrating GIS and Groundwater Modeling Technologies for SWAPP Development

    Groundwater Modeling and GIS Technologies: Powerful Tools for Data Integration and Analysis Groundwater modeling and Geographic Information System (GIS) technologies are useful tools for developing a Source Water Assessment and Protection Plan (SWAPP) to assist planners in protecting groundwater ...


    By Weston Solutions, Inc

  • Using GIS to Build Hydraulic Models Faster

    The use of hydraulic models, already widespread, continues to grow rapidly.  Modeling is used increasingly all around the world to address planning and operational issues in water supply networks, collection systems, and river management. Much of this growth results from the rapid advances in the capabilities of the best of the hydraulic modeling software solutions, which constantly improve ...


    By Innovyze

  • Evaluation of AirGIS: a GIS–based air pollution and human exposure modelling system

    This study describes in brief the latest extensions of the Danish Geographic Information System (GIS)–based air pollution and human exposure modelling system (AirGIS), which has been developed in Denmark since 2001 and gives results of an evaluation with measured air pollution data. The system shows, in general, a good performance for both long–term averages (annual and monthly averages), ...


    By Inderscience Publishers

  • Identifying regional groundwater risk areas using a WWW GIS model system

    To evaluate the National Agricultural Pesticide Risk Analysis (NAPRA) WWW system (http://pasture.ecn.purdue.edu/~napra), NAPRA WWW predicted nitrate and atrazine losses to shallow groundwater were compared with well nitrate and atrazine data within Indiana. The NAPRA system correctly categorised 84% of the 'High' and 'Very High' nitrate observations, although the predicted nitrate losses are ...


    By Inderscience Publishers

  • The influence of hazard models on GIS-based regional risk assessments and mitigation policies

    Geographic information systems (GIS) are important tools for understanding and communicating the spatial distribution of risks associated with natural hazards in regional economies. We present a GIS-based decision support system (DSS) for assessing community vulnerability to natural hazards and evaluating potential mitigation policy outcomes. The Land Use Portfolio Modeler (LUPM) integrates earth ...


    By Inderscience Publishers

  • Integration of Subsurface Data Management and GIS to Facilitate Model Calibration

    Abstract The development of numerical codes, as well as pre- and post-processors to support these codes, has made the discipline of groundwater modelling increasingly more automated and efficient. The value of such modelling is reliant on the site-specific data used to build and calibrate the models. The integration of EarthSoft's EQuISÒ Geology and any of several popular modelling environments ...


    By EarthSoft, Inc

  • GIS-based modelling for the estimation of municipal solid waste generation and collection

    In the present paper, an innovative model for the estimation of municipal solid waste generation and collection is proposed. This model is part of an extended solid waste management system and uses a spatial Geodatabase, integrated in a GIS environment. It takes into consideration several parameters of waste generation, such as population density, commercial activities, road characteristics and ...


    By SAGE Publications

  • A GIS-based water distribution model for Zhengzhou city, China

    Many water companies in China are developing GIS as a computer-based tool, for mapping and analyzing objects and events that happen on a water distribution network. However, only a few companies have taken a further step to develop a hydraulic model based on GIS, and Zhengzhou Water Supply Corporation is one of them. The WaterGEMS V8 XM from Bentley is used to develop the hydraulic model for the ...


    By IWA Publishing

  • GIS applications in urban drainage master planning

    Introduction: The City of Stratford, Ontario, located 150 km (94 mi.) west of Toronto, initiated the development of an infrastructure asset database in the early 1990’s and continues to develop digital mapping to support the maintenance and management of municipal services. In continuing these efforts, the City initiated the City-Wide Storm System Master Plan (the Study) in 2002 to ...


    By XP Solutions

  • Human-GIS interaction issues in crisis response

    Geospatial information systems (GIS) provide a central infrastructure for computer supported crisis management in terms of database, analytical models and visualisation tools, but the user interfaces of such systems are still hard to use, and do not address the special needs of crisis managers who often work in teams and make judgements and decisions under stress. This paper articulates the ...


    By Inderscience Publishers

  • Distributed urban storm water modeling within GIS integrating analytical probabilistic hydrologic models and remote sensing image analyses

    Analytical probabilistic hydrologic models (APMs) are computationally efficient producing validated storm water outputs comparable to continuous simulation for storm water planning level analyses. To date, APMs have been run as spatially lumped or semi-distributed models relying upon calibrated and spatially averaged system state variable inputs/parameters limiting model system representation and ...


    By IWA Publishing

  • A decision support system for air quality management combining GIS and optimisation techniques

    This paper describes a multi-tiered approach to the design of plans and policies for urban environmental management, in particular air quality, as related to the energy and transportation sectors. The approach is based on the iterative combination of sectoral and global optimisation models, including a discrete multi-criteria approach, and spatially distributed air quality models. The approach ...


    By Inderscience Publishers

  • A GIS based air quality system for the Apulia region, southern Italy

    A GIS based air quality modelling system has been developed in Apulia region in the Southern Italy, to support local authorities in air quality management. Meteorological and dispersion simulations were performed for the year 2005. Predictions have been compared with concentration data from the air quality monitoring network. Results evidence a good correlation between predictions and ...


    By Inderscience Publishers

  • Spatial analysis of water quality using a combination of GIS and statistical software

    GIS-based spatial analysis was combined with statistical analysis to process time varying water quality data. A data model was employed to manage the spatio-temporal data. The spatial data engine of ArcSDE was used to access the database. A data relationship model was developed to perform data communication between GIS and the statistical software. Visual Basic was used to construct links between ...


    By Inderscience Publishers

  • Application of a GIS-based DRASTIC model and groundwater quality index method for evaluation of groundwater vulnerability: a case study, Sefid-Dasht

    Pollution control and removal of pollutants from groundwater are a challenging and expensive task. The aims of this paper are to determine the aquifer vulnerability of Sefid-Dasht, in Chaharmahal and Bakhtiari province, Iran, using the DRASTIC model. In addition, the groundwater quality index (GQI) technique was applied to assess the groundwater quality and study the spatial variability of major ...


    By IWA Publishing

  • Advanced GIS Exercise: Performing error analysis in ArcGIS modelbuilder

    Knowledge of Geographic Information Systems is quickly becoming an integral part of the natural resource professionals' skill set. With the growing need of professionals with these skills, we created an advanced geographic information systems (GIS) exercise for students at Clemson University to introduce them to the concept of error analysis, stream delineation, model iterations and feedback ...

  • New Jersey Uses GIS, EQuIS to Collect Site Remediation Data

    Using GIS To Manage Remediation Data GIS holds great potential as a tool for managing environmental site remediation data. While using GIS to locate Superfund sites is commonplace, GIS has played only a minor role in the review and analysis of chemical data gathered during an investigation or monitoring activity. There are a number of reasons why GIS has not become commonplace in the ...


    By EarthSoft, Inc

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you