The estimation of soil humidity by the satellite Sentinel-2 imageries (object of study is the Baryshivs'kyi district of the Kiev region)

Romanciuc, IF, Sakhatsky, AI, 1Apostolov, AA
1Scientific Center for Aerospace Research of the Earth Institute of Geological Science of the NAS of Ukraine, Kyiv
Dopov. Nac. akad. nauk Ukr. 2018, 1:60-66
Section: Geosciences
Language: Ukrainian

The study of humidity was performed on fields of the Baryshivs'kyi district of the Kiev region. In this area, we observed the spreading of a specific type of soil degradation: the microdepression of a relief. Investigations are based on the usage of the multispectral satellite Sentinel-2 imageries. The data obtained during the field research were compared with the satellite imageries. It is proposed to apply the NWI, which has shown the correlation with the percentage of soil humidity obtained in the field research work. Based on the field research and satellite data, the mapping of sites with moistened soils is carried out. The data analysis has demonstrated the presence of waterlogged soil on the bottom area of microdepressions of the relief, where the changes of the soil type and the vegetation are observed.

Keywords: microdepression, Normalized Water Index (NWI), satellite Sentinel-2, soil humidity
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