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«IZVESTIYA IRKUTSKOGO GOSUDARSTVENNOGO UNIVERSITETA». SERIYA «NAUKI O ZEMLE»
«THE BULLETIN OF IRKUTSK STATE UNIVERSITY». SERIES «EARTH SCIENCES»
ISSN 2073-3402 (Print)

List of issues > Series «Earth Sciences». 2025. Vol 54

Hydrological and Geomorphological Regionalization of the Selenga River Mouth Area

Author(s)

M. V. Pavlov1, E. А. Ilicheva1,2

1 V. B. Sochava Institute of Geography SB RAS, Irkutsk, Russian Federation

2 Irkutsk State University, Irkutsk, Russian Federation

Abstract
Thе article examines fundamental issues in hydrology and the branch of dynamic geomorphology that studies the interaction of flowing waters with the underlying surface and the dynamics of relief in the contact zone between a river flow and a receiving reservoir, using the Selenga River Delta as an example. The Selenga River Mouth area has the outer boundaries, which are determined by the morphostructural features of the coast. An integrated scheme is presented, combining various classifications of coasts, types of river mouths, and the geological and tectonic prerequisites for their development in the unique conditions of the Baikal coast. From the standpoint of hydrological and geomorphological concepts, the natural boundaries of the modern and ancient parts of the Selenga River Mouth region are drawn, within which the deltaic region, the delta head, its subaerial and subaqueous parts, the coastal area, and the delta space of Lake Baikal are successively distinguished. For the mouth area of the Selenga River, a combined hydrological-geomorphological zoning scheme and explication have been developed, in which the position of hydrological and geomorphological regions is compared according to the fundamental schemes by V. N. Mikhailov and V. N. Korotaev with the author's reflections. The aim of this study was to substantiate the boundaries of the subaerial and subaqueous parts of the delta and to differentiate the subaerial delta into zones formed by mutually limiting factors of river flow and the level of the receiving reservoir. The internal boundaries of the subaerial delta are drawn on the basis of an interdisciplinary approach, taking into account the specific dynamics of the lake margin region and the hydrographic system and the landscapegeomorphological conditions of the development of the protruding Selenga River Delta.
About the Authors

Pavlov Maksim Valerievich, Junior Researcher Scientist, Laboratory of Hydrology and Climatology V. B. Sochava Institute of Geography SB RAS 1, Ulan-Batorskaya st., Irkutsk, 664033, Russian Federation e-mail: maksimpavlov_v@mail.ru 

Ilicheva Elena Anatolievna, Candidate of Sciences (Geography), Senior Researcher, Laboratory of Hydrology and Climatology V. B. Sochava Institute of Geography SB RAS 1, Ulan-Batorskaya st., Irkutsk, 664033, Russian Federation Associate Professor, Department of Hydrology and Environmental Management Irkutsk State University 1, K. Marx st., Irkutsk, 664003, Russian Federation e-mail: lenail3663@mail.ru

For citation
Pavlov M.V., Ilicheva E.А. Hydrological and Geomorphological Regionalization of the Selenga River Mouth Area. The Bulletin of Irkutsk State University. Series Earth Sciences, 2025, vol. 54, pp. 72-86. https://doi.org/10.26516/2073-3402.2025.54.72 (in Russian)
Keywords
river mouth area, protruding delta, regionalization, hydrology, geomorphology, Selenga.
UDC
504.454/551.435.126 (571.53/.55)
DOI
https://doi.org/10.26516/2073-3402.2025.54.72
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