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testing WMS with a 32 Bit GeoTIFF
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testing WMS with an 8 Bit GeoTIFF
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Vulnerability assessment using DRASTIC (Aller et al., 1987) and COP methods
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Vulnerability assessment using DRASTIC method (Aller et al., 1987)
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Hydrogeological_map_GBR_2019
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Vulnerability assessment using DRASTIC method (Aller et al., 1987)
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C layer represents hydraulic conductivity of hydrological units and direct assignment of C index to each aquifer.
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The aquifer media layer is created by direct assignment of soil layer to S index values from 1-10. The majority of the pilot area (80 %) is covered by subsoils > 5 m thick, with further 10 % subsoils are > 3 m thick. The majority of the catchment is given the lower ‘S’-ratings due to soil and subsoil cover, with areas of little or no soil given a value of 10.
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The Hydraulic conductivity layer is taken as a direct assignment of the hydraulic conductivities from the aquifer parameter database to the C index values according to DRASTIC, ranging from 1 to 10.
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T layer represents topographical information, where calculation of the slope was effectuated and represented in rasterfile, reclassified into T index values.