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ERS, TDX and S1A SAR interferometric models calibrated with ICESat and CryoSat-2 altimetry data were successfully applied to mapping and quantifying recent breakup of the Matusevich Ice Shelf in Severnaya Zemlya. The assessment of the mapped changes showed that the ice shelf lost 123±2.5 km² or two thirds of its area and 9±0.3 km³ of its volume in the course of the past 5 years. The potential causes and aftereffects of the ice shelf disintegration were determined and the sensitivity of MIS remnants to climatic forcing was assessed. The mean annual temperature of-9°C proved to be a valid climatic threshold for the ice-shelf viability in the Russian Arctic. We suggest that the integral estimation of calving regime in Severnaya Zemlya previously published by other investigators is out-of-date and must be revised.

The paper shows the practical use possibilities of satellite services “Vega” for arable land use determining. The services provide access to satellite data and different tools for its processing for solving this problem. The article shows examples of agricultural land use types interpretation using different approaches such as multi-temporal RGB composites analysis and NDVI vegetation index dynamics analysis. The results of object-based classification of arable land use assessment are demonstrated in the paper on the example of Safonovsky District (Smolensk region, Russia). It is shown that the reliability of the proposed approach reaches more than 90%.

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Анализ развития озимых культур в южных регионах европейской части России в феврале 2019 года на основе данных дистанционного мониторинга е. а. лупян 1 , к. а. буланов 2 , п. в. денисов 3 , Ю. С. крашенинникова 1 , д. е. плотников 1 , в. а. толпин 1 , к. а. трошко 3, 4 , и. а. уваров 1