Space imaging and geoelectrical methods complexing when assessing technogenic flooding in the impact zone of a solid municipal waste dump
DOI:
https://doi.org/10.24852/2411-7374.2024.1.23.29Keywords:
flooding, municipal solid waste, vegetation indices, electrical resistivity, resistivity measurementAbstract
The purpose of the work was to assess the process of technogenic flooding using a complex of space and ground-based methods. The object was the impact zone of the municipal solid waste dump. We used vegetation indices (determined from multispectral satellite imaging data) and electrical resistivity of the components of the geological environment (electrical prospecting) as indicators of the flooding process. Based on satellite photography, technogenic modifications of forest geosystems resulting from flooding were identified. The NDVI value along the flooding gradient decreased by 1.5–2.3 times, NBR – by 1.8-2.9 times, SWVI – 2.4–7.4 (maximum differences in June). It has been established that along the flooding gradient there was an increase in the mineralization of surface water by 6.2 times. Electrical resistance of soils decreased from hundreds and thousands of Ohm m to a few Ohm m. Those facts indicated the contamination of groundwater with landfill leachate
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