ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2021, Vol. 18, No. 6, pp. 222-237

Features of the development of a regional water index for monitoring the impact of acid mine water discharges on river systems

D.M. Ermakov 1, 2 , A.D. Demenev 3 , O.Yu. Meshcheriakova 3 , O.A. Berezina 3 
1 Space Research Institute RAS, Moscow, Russia
2 Kotelnikov Institute of Radioengineering and Electronics RAS, Fryazino Branch, Fryazino, Moscow Region, Russia
3 Perm State University, Perm, Russia
Accepted: 09.12.2021
DOI: 10.21046/2070-7401-2021-18-6-222-237
A large-scale environmental problem of the Perm Territory, characteristic of many natural and technogenic ecosystems around the world, is the discharges of acidic mine waters within the abandoned coal mining complex. Contact environmental monitoring carried out on the territory is fraught with significant logistical difficulties and does not meet the requirements of operational information support. At the same time, there is an accumulation of unique data that can be useful as complementary information for organizing more effective space monitoring of a given territory. The paper describes the next stage in the development of the proposed by the authors approach to structuring and complex analysis of a number of previously known water indices. The aim of the approach is detection (segmentation) and further analysis using satellite multichannel images of open water areas in difficult observation conditions: with small transverse dimensions of the objects of the hydrological network and a possible high concentration of contaminants, which reduces the visible contrasts between water and land. The key aspect is the focus on the development of a regional (not global) index, which potentially makes it possible to take into account and effectively use additional information: features of the enclosing landscape, patterns of seasonal variation, and lighting conditions. At the same time, from a methodological point of view, the approach is not tied to the characteristics of a specific territory and can be adapted for monitoring other similar ecosystems. The effectiveness of the approach was demonstrated by comparing examples of processing data from actual satellite observations using standard and new water indices. It is shown that the approach is promising for the implementation of satellite monitoring in the above complex observation conditions.
Keywords: water index, environmental monitoring, Sentinel-2 MSI, Kizel coal basin
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