MORPHODYNAMICS OF THE CHANNEL OF THE NORTHERN DVINA RIVER, ITS NATURAL AND TECHNOGENIC TRANSFORMATIONS IN THE XX – EARLY XXI CENTURY

Chalov, R.S.; Golubtsov, G.B.; Kurakova, A.A.; Semakov, V.A.; Panchenko, E.D.

Авторы: Chalov R.S., Golubtsov G.B., Kurakova A.A., Semakov V.A., Panchenko E.D.
Журнал: Известия Русского географического общества
Том: 157
Номер: 3
Год издания: 2025
Издательство: ФГУП Издательство «Наука»
Местоположение издательства: Москва
Первая страница: 249
Последняя страница: 268
DOI: 10.7868/S30345383250305e6
Аннотация: The article presents the main directions and conditions of the transformationof the Northern Dvina River channel (from the confluence with the Vychegda River),occurring under the influence of almost a century of anthropogenic impacts, fluvialdeformations and hydroclimatic changes; the contribution of each of these factors andtheir interrelations are determined. The study is based on analysis of field measurements(branching water discharges, flow velocity fields, turbidity and sediment composition)taken during the 2024 flood period, river maps showing channel conditions at varioustimes since the 1960s, satellite imagery and riffle and riffle area maps. It has beenshown that the reformation of the northern Dvina channel takes place in the widefloodplain and adapted channels, and in those sections of the incised channel where itis formed in moraine or Permo–Triassic sediments. The main factor of transformationis anthropogenic, namely dredging and straightening to ensure the required dimensions(mainly channel depth) of the waterway. Due to the amount of work carried out, theirinfluence is much greater than the role of changes in water flow, which for the NorthernDvina is manifested in an increase in annual flow with a decrease in water availabilityduring floods and an increase during low flow periods. Dredging and straighteninghas resulted in more complex branching in most sections of the channel in a widefloodplain and adapted channel. However, the construction of dams, including thosethat overtopped arms, has resulted in simplified channel branching in some sections ofboth incised and wide floodplain channels.
Добавил в систему: Голубцов Георгий Борисович

	ИСТИНА	Войти в систему Регистрация
	ИСТИНА ПсковГУ
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ИСТИНА ПсковГУ

MORPHODYNAMICS OF THE CHANNEL OF THE NORTHERN DVINA RIVER, ITS NATURAL AND TECHNOGENIC TRANSFORMATIONS IN THE XX – EARLY XXI CENTURYстатья Перевод

Прикрепленные файлы