The Distribution of Water and Suspended Sediment Flow during Spring Flood in the Forked Channel of the Lower Ob (Within Khanty-Mansi Autonomous Area)

Chalov, R.S.; Kamyshev, A.A.; Kurakova, A.A.; Zavadskii, A.S.

Авторы: Chalov R.S., Kamyshev A.A., Kurakova A.A., Zavadskii A.S.
Журнал: Water Resources
Том: 48
Номер: 1
Год издания: 2021
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 18
Последняя страница: 28
DOI: 10.1134/s0097807821010127
Аннотация: The forked channel is a rare and poorly known type of branching channel, the distribution of flowin which is of key importance for water transport, economic activities, and water resources development. Thearticle is the first to analyze the distribution of the flow of water and suspended sediments between the majortwo branches of the forked channel of the Lower Ob, i.e., the Malaya Ob and the Gornaya Ob, numerousfloodplain channels (branches), responsible for hydraulic interaction between them and the Severnaya Sos’va, a large tributary of the Lower Ob. It is shown that water discharges vary widely in both branchesbecause of the secondary separation of branch channels, the distribution of flow among branches, deviationof sometimes considerable part of flow into floodplain channels (branches) and its return further downstream.General tendencies are revealed in water flow distribution in forked channes, and the mechanismsgoverning water flow distribution between the branches are described. A considerable effect on the MalayaOb is due to its hydraulic interaction with the Severnaya Sos’va through floodplain channels, which withdrawan appreciable portion of water flow of the former. The development of the channel of the Gornaya Ob featuresa considerable limiting effect of the right main bank. During floods, both branches of the forked channelof the Lower Ob, at low turbidity, show a tendency toward decrease downstream. However, the downstreamdecrease in the solid discharge is more pronounced, reflecting the general trend in sediment accumulation inthe Lower Ob.
Добавил в систему: Куракова Анна Александровна

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