GIS in environmental contamination
GIS in environmental contamination is the use of
GIS in soil contamination
Soil contamination from heavy elements can be found in the urban environments, which can be attributed to the transportation and industries along with the background levels (minerals-leaching heavy elements from weathering). Also, some of the most soil contaminated areas are around the mines such as the ones in Slovenia, Bosnia and Herzegovina, and in United States (Sulphur Bank Superfund Site, in California).[5][6][7] In a study area, GIS is used for the analysis of spatial relationship of the contaminants within the soil.
Soil contamination in Slovenia
In Idrija, Slovenia, where the world’s second largest mercury (Hg) mine operated has a significant amount of Hg emissions into the atmosphere by a surface process of adsorption of Hg from and to soil particles surfaces, which results in a diffusion of Hg through the pores of soil.[8] To calculate the emission flux for Hg, a Hg emission model was developed:
in which the FHg is the flux of Hg emission, Ea is the activation energy, R is the gas constant, Ts is the soil temperature, n and m are constants, [Hg]s is the Hg concentration, and 0.003* Rz accounts for the solar radiation since the solar radiation has the effect on the temperature, hence the solar radiation has the effect on the emission flux of Hg.[9] Once the Hg concentration data was gathered, a schematic model has been prepared for GIS input, which consisted of a digital elevation model (DEM), a satellite land use map, and EARS data.[10][11][12][13] Using the inverse distance weighted (IDW) method from geostatistical tools in ArcGIS 9.3, a raster model of the Hg concentration has been produced for the Idrija area.[14][15][16][17]
DRASTIC Summary Index Score modeled using GIS
Under certain hydrological parameters, some aquifers are more prone to contamination than other
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Figure 1: This is the DRASTIC summary index for West Florida. In blue is the least vulnerable area of the aquifer. In red the highest vulnerability.
References
- ^ Demers, M. N. (2003). Fundamentals of Geographic Information Systems. John Wiley & Sons, Inc.
- ^ Longley, P. A., Goodchild, M. F., Maguire, D. J., & Rhind, D. W. (2005). Geographic Information Systems and Science. John Wiley & Sons Ltd.
- ^ Kocman, D., & Horvat, M. (2011). Non-point source mercury emission from the Idrija Hg-mine region: GIS mercury emission model. Journal of Environmental Management, 1–9.
- ^ Jasminka, A., & Robert, S. (2011). Distribution of chemical elements in an old metallurgical area, Zenica. Geoderma, 71–85.
- ^ Jasminka, A., & Robert, S. (2011). Distribution of chemical elements in an old metallurgical area, Zenica. Geoderma, 71–85.
- ^ Nacht, D. M., & al., e. (2004). Atmospheric Mercury Emissions and Speciation at the Sulphur Bank Mercury Mine Superfund Site, Northern California. Environmental Science Technology, 1977–1983.
- ^ Kocman, D., & Horvat, M. (2011). Non-point source mercury emission from the Idrija Hg-mine region: GIS mercury emission model. Journal of Environmental Management, 1–9.
- ^ Kocman, D., & Horvat, M. (2011). Non-point source mercury emission from the Idrija Hg-mine region: GIS mercury emission model. Journal of Environmental Management, 1–9.
- ^ Kocman, D., & Horvat, M. (2011). Non-point source mercury emission from the Idrija Hg-mine region: GIS mercury emission model. Journal of Environmental Management, 1–9.
- ^ Kocman, D., & Horvat, M. (2011). Non-point source mercury emission from the Idrija Hg-mine region: GIS mercury emission model. Journal of Environmental Management, 1–9.
- ^ Lillesand, T. M., Kiefer, R. W., & Chipman, J. W. (2008). Remote Sensing and Image Interpretation. John Wiley & Sons, Inc.
- ^ Demers, M. N. (2003). Fundamentals of Geographic Information Systems. John Wiley & Sons, Inc.
- ^ Longley, P. A., Goodchild, M. F., Maguire, D. J., & Rhind, D. W. (2005). Geographic Information Systems and Science. John Wiley & Sons Ltd.
- ^ Kocman, D., & Horvat, M. (2011). Non-point source mercury emission from the Idrija Hg-mine region: GIS mercury emission model. Journal of Environmental Management, 1–9.
- ^ Longley, P. A., Goodchild, M. F., Maguire, D. J., & Rhind, D. W. (2005). Geographic Information Systems and Science. John Wiley & Sons Ltd.
- ^ Gorr, W. L., & Jurland, K. S. (2008). GIS Tutorial . Redlands: ESRI.
- ^ Demers, M. N. (2003). Fundamentals of Geographic Information Systems. John Wiley & Sons, Inc.
- ^ Bukowski, P., Bromek, T., & Augustyniak, I. (2006). Using the DRASTIC System to Assess the Vulnerability of Ground Water to Pollution in Mined Areas of the Upper Silesian Coal Basin. Mine Water and the Environment, 15–22.
- ^ Drastic Coverage of Intermediate Aquifer System. (2002, November 1). Retrieved April 17, 2011, from Florida Geographic Data Library: http://www.fgdl.org/metadataexplorer/explorer.jsp
- ^ Bukowski, P., Bromek, T., & Augustyniak, I. (2006). Using the DRASTIC System to Assess the Vulnerability of Ground Water to Pollution in Mined Areas of the Upper Silesian Coal Basin. Mine Water and the Environment, 15–22.