Debris Flow Event of 2014 and Its Impact on the Accumulation of the Solid Fraction in the Kyngarga River Channel, Tunka Valley, Southwestern Cisbaikalia, Russia

Abstract

On 28 June 2014, debris flows brought large volumes of loose material into the Kyngarga river valley. The material was sourced from rock collapse and rock sliding on the valley slopes and delivered mainly to the river by debris flows from the side valleys of the river basin. Our field studies and analysis of the satellite images revealed that the potential debris volume received by the river amounted to about 1×10 6 m 3. The morphometric parameters of the Kyngarga river basin are favorable for the river-channel processes associated with floods, debris flows and waterrock flows.

Experience of using non‐specialized unmanned aerial vehicles for aerial surveys in the studies of exogenous geological processes

“…Our field surveys were focused on the debris flow that occurred near the Arshan village in the Tunka Ridge area in June 2014 and aimed to obtain quantitative data on this debris flow event. Its detailed descriptions are available in [Makarov et al, 2014;Kadetova et al, 2016aKadetova et al, , 2016bRybchenko et al, 2018].…”

“…These sites have been in focus of research for several years, and the major geological factors and the dynamics of processes were reported in [Kozyreva et al, 2014a[Kozyreva et al, , 2014b[Kozyreva et al, , 2016Kadetova et al, 2016aKadetova et al, , 2016bRybchenko et al, 2018]. Quantitative data on the processes under study were obtained by various methods, including tachometry surveys, ground photogrammetry and direct field measurements.…”