Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 2, pp. 278-283
Dynamics of the channel on the Bureya River in the hill slope collapse area
L.S. Kramareva
1 , E.A. Loupian
2 , Yu.A. Amelchenko
1 , M.Yu. Belyaev
3 , M.A. Burtsev
2 , V.V. Sukhanova
1 , Yu.A. Shamilova
1 , A.M. Esakov
3 1 Far-Eastern Center of SRC “Planeta”, Khabarovsk, Russia
2 Space Research Institute RAS, Moscow, Russia
3 S.P. Korolev Rocket and Space Сorporation “Energia”, Korolev, Russia
Accepted: 29.04.2019
DOI: 10.21046/2070-7401-2019-16-2-278-283
The report presents an analysis of the dynamics of the channel made in the hill slope collapse area on the Bureya River at the mouth of the Sredny Sandar River at 50° 33′ 38″ N, 131° 28′ 53″ E. According to the previous analysis, the collapse happened on December 11, 2018, at approximately 04:30 GMT, and totally dammed the Bureya River. To mitigate danger of flooding the populated areas upstream, it was decided to partially remove the dam by setting up a channel in it. The channel was set up during the period from January 21 to February 12, 2019, and partially freed the riverbed. This report analyzes the channel condition at the end of April, 2019. It shows that since the beginning of March, the width of the channel has decreased and its shape has continuously changed. The change parameters and estimates are derived from Sentinel-2 and ISS data. The analysis shows that water level downstream the dam has been on the decrease again. At the time of report preparation, the upstream/downstream water level difference was about ten meters. It is caused by fast clogging of the channel by the crumbling channel walls and hence channel passage capacity decrease. At present, the whole length of the channel appears shallow and riffled. The observed processes obviously indicate the necessity of continuous monitoring both the channel area and upstream.
Keywords: Bureya Reservoir, Bureya River, slope collapse, Earth observation satellite systems, Earth remote sensing
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