Mathematical Modeling of Runoff Formation Spatial Structure
https://doi.org/10.31857/S2587556620020107
Abstract
Runoff estimation of drainage basin’s different spatial structural parts is presented in the research. The hydrological role of runoff-forming complexes is considered by the case study of the northern macroslope of the Western Sayan Mountains. The aggregate database of vegetation, soil and slope characteristics (hydrological parameters for modelling) was received during of investigated region’s analysis. The base’s applicability is justified by high results of calculated and obtained daily water discharge hydrographs’ convergence. An effect of different forest types characteristics (species composition, tree crown cover, slope steepness, soil, vegetation and other) in the runoff forming was quantitative confirmed. Water discharge is mainly provided by taiga geosystems which are prevail in water catchment areas investigated. According to the assessment of drainage basin different parts’ contribution to runoff the largest runoff modules and rates per unit of area are observed in nival geosystems and mountain tundras. Inconsistency of the runoff modules changing with altitude related to features of snow storage in the upper mountain levels of the Sayan Mountains’ northern macroslope was revealed.
About the Authors
G. V. Pryakhina
Saint Petersburg State University, Institute of Earth Sciences
Russian Federation
Russian Federation
E. S. Zelepukina
Saint Petersburg State University, Institute of Earth Sciences; Saint Petersburg State University, Institute of Earth Sciences
Russian Federation
Russian Federation
S. A. Gavrilkina
Saint Petersburg State University, Institute of Earth Sciences
Russian Federation
Russian Federation
V. A. Solovyev
Saint Petersburg State University, Institute of Earth Sciences; Expert GAZ, LLC
Russian Federation
Russian Federation
Saint Petersburg, Yekaterinburg
N. I. Amburtseva
Interparliamentary Assembly of Member Nations of the Commonwealth of Independent States (IPA CIS)
Russian Federation
Russian Federation
Saint Petersburg
T. A. Vinogradova
Saint Petersburg State University, Institute of Earth Sciences
Russian Federation
Russian Federation
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1. Стокоформирующие комплексы в бассейнах р. Ус и р. Амыл | |
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2. Runoff-forming complexes in catchment areas of the rivers Us and Amil | |
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- The aggregated database of vegetation, soil and slope characteristics of the Western Sayan region as parameters for hydrological modelling was created.
- Agreement between modelled and observed hydrographs of daily water discharge allowed for an assessment of the long-term average runoff from the different run-off complexes and their contribution to the formation of mountain rivers drain.
- An effect of different forest types characteristics, e.g. species composition, tree crown cover, slope steepness, soil, and vegetation, in the runoff forming was quantitatively confirmed.
- Revealed inconsistency of the runoff modules, changing with altitude, related to the features of snow storage in the upper levels of drainage basins.
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For citations:
Pryakhina G.V., Zelepukina E.S., Gavrilkina S.A., Solovyev V.A., Amburtseva N.I., Vinogradova T.A. Mathematical Modeling of Runoff Formation Spatial Structure. Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2020;84(2):218-227. (In Russ.) https://doi.org/10.31857/S2587556620020107
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