TY - JOUR

T1 - Methods of mathematical modelling for calculating flow characteristics of ungauged rivers in engineering design tasks (by the example of the Khemchik River, Tyva Republic, Russia)

AU - Nesterova, N. V.

AU - Makarieva, O. M.

AU - Post, D. A.

N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.

PY - 2019/11/25

Y1 - 2019/11/25

N2 - In this study, we assess the results of the application of the deterministic hydrological model Hydrograph for calculating the maximum discharge of various recurrence frequencies at the ungauged mountain catchment of the Khemchik River-Khemchik village (the Tyva Republic, Russia, area 1750 km2). We have assessed the parameters of the model for three main landscapes of the study area. Based on streamflow modelling at two gauged catchments, we have verified the parameters and algorithms of the hydrological mode land the results of modelling are satisfactory. The simulations of streamflow with daily time step for the Khemchik River-Khemchik village was conducted for the period between 1966 and 2012 using meteorological observational data from the Teeli meteorological station. Based on the simulated maximum discharge series, we have constructed the frequency distribution curves and compared with the data on calculations according to the standard methodology of frequency analysis provided in SP 33-101-2003. The modelling-based maximum instantaneous discharges for the frequency interval between 99 and 0.7% are 1.3-5 times higher than the values estimated by the standard methodology. The Ministry of Emergency Situations of the Tyva Republic indirectly confirms the plausibility of model calculations, evidencing the regular flooding of the Khemchik village, which is not predicted by the values obtained with the standard methods.

AB - In this study, we assess the results of the application of the deterministic hydrological model Hydrograph for calculating the maximum discharge of various recurrence frequencies at the ungauged mountain catchment of the Khemchik River-Khemchik village (the Tyva Republic, Russia, area 1750 km2). We have assessed the parameters of the model for three main landscapes of the study area. Based on streamflow modelling at two gauged catchments, we have verified the parameters and algorithms of the hydrological mode land the results of modelling are satisfactory. The simulations of streamflow with daily time step for the Khemchik River-Khemchik village was conducted for the period between 1966 and 2012 using meteorological observational data from the Teeli meteorological station. Based on the simulated maximum discharge series, we have constructed the frequency distribution curves and compared with the data on calculations according to the standard methodology of frequency analysis provided in SP 33-101-2003. The modelling-based maximum instantaneous discharges for the frequency interval between 99 and 0.7% are 1.3-5 times higher than the values estimated by the standard methodology. The Ministry of Emergency Situations of the Tyva Republic indirectly confirms the plausibility of model calculations, evidencing the regular flooding of the Khemchik village, which is not predicted by the values obtained with the standard methods.

UR - http://www.scopus.com/inward/record.url?scp=85097857133&partnerID=8YFLogxK

U2 - 10.1088/1755-1315/381/1/012068

DO - 10.1088/1755-1315/381/1/012068

M3 - Conference article

AN - SCOPUS:85097857133

VL - 381

JO - IOP Conference Series: Earth and Environmental Science

JF - IOP Conference Series: Earth and Environmental Science

SN - 1755-1307

IS - 1

M1 - 012068

T2 - International Scientific and Practical Conference in Commemoration of Corr. Mem., RAS, A.N. Antipov "Geographical Foundations and Ecological Principles of the Regional Policy of Nature Management"

Y2 - 23 September 2019 through 27 September 2019

ER -