GIS Based Solutions for Waste Disposals

Fig. 2: GIS Image - Zones of Deeper Weathering (Blue),Western Ghats, Tamil Nadu
After generating such different buffered raster GIS images, these were integrated utilising GIS overlay function in GRAM GIS and the final GIS integrated image was generated. To do so, firstly the buffered GIS image showing lineament density (Fig. 1) was overlaid on the GIS image showing basinal geological structures (Fig. 2). This has given a GIS image having polygons of three classes viz:

• Basinal geological structures (Parameter-1)
• Lineament density minima (Parameter-2)
• Combined zones of basinal geological structures and lineament density maxima (combination of Parameters-1 and 2)

A model study was conducted in plains adjoining the Western Ghats to demonstrate the concept of selecting suitable sites for the disposal industrial and domestic wastes

Over the above integrated GIS image, buffered GIS image showing deeper weathering (Fig. 4) was overlaid. This has given a GIS image having polygons of 7 classes as follows:

• Basinal geological structures (Parameter-1)
• Lineament density minima (Parameter-2)
• Zones of deeper weathering (Parameter-3)
• Combined zones Parameters-1 & 2
• Combined zones Parameters-1 & 3
• Combined zones Parameters-2 & 3
• Combined zones Parameters-1, 2 & 3

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