Abstract
The results of a computer interpretation of the LANDSAT satellite image of a natural–technogenic geosystem (the Degelen area of the Semipalatinsk test site (STS)) are presented in this article. The data are analyzed together with the materials of geological mapping of the study area and information of the underground large-scale explosions. The block–hierarchical divisibility of the rock mass is reflected in the lineament pattern. The extended lineaments identified at the highest threshold of expression are fragmentarily confirmed by faults and are considered boundaries that determinate of the block configuration. High values of the density fields of small lineaments of the sublatitudinal and SW–NE directions relative to the density field of the SE–NW direction correspond to the activation of the region at the neotectonic stage. A lineament zone of SW–NE strike traces the main deep Degelen–Irtysh fault. The SW–NE direction of the elongation lines of the rose diagrams of small lineaments is determined by the modern stress field. A comprehensive analysis of the geological and geomorphological structure, statistical characteristics of the fields of small lineaments, and the technogenic impact on the massif was used to rank the blocks into natural and natural–technogenic. The technogenically disturbed areas are identified according to the anomalies in the density of small lineaments, which can be considered the main ways radionuclides migrate with underground water.
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This study was carried out as part of the State Task of the Sadovsky Institute of Geospheres Dynamics, Russian Academy of Sciences, topic no. 122032900172‒5.
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Ivanchenko, G.N., Gorbunova, E.M. Analyzing the Natural–Technogenic Geosystem with Computer Interpretation Data (Using the Degelen Massif of the Semipalatinsk Test Site as an Example). Izv. Atmos. Ocean. Phys. 59, 1605–1619 (2023). https://doi.org/10.1134/S000143382310002X
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DOI: https://doi.org/10.1134/S000143382310002X