Pluvial floods as a harmful effect of the global climate change process may occur more and more frequently in urban areas. With determination of environmental vulnerability the vulnerability pillar of the impact assessment can be given. The environmental vulnerability depends on three factors: slope, water coverage and the drainage capacity of the earth. Since the drainage capacity of the surface water depends on the soil’s clay content, with a careful calibration of GPR survey the soil factor can be derived from the attenuation of EM waves. This study presents the determination process of environmental vulnerability and with a field example illustrates its applicability where the designation of vulnerable zones was done by using conventional method and the based on GPR survey as well. The field test showed that based on the attenuation of EM waves more precise and reliable vulnerability assessment can be carried out than with the conventional delineation method of the endangered areas.


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