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Your search keyword '"Duskayev, Kassym"' showing total 4 results
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4 results on '"Duskayev, Kassym"'

2. Evaluation of Reservoir Inflows Using Semi-Distributed Hydrological Modeling Techniques: Application to the Esil and Moildy Rivers' Catchments in Kazakhstan

Author

Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros de Caminos, Canales y Puertos - Escola Tècnica Superior d'Enginyers de Camins, Canals i Ports, Serikbay, Nurgalym T., Tillakarim, Tursyn A., Rodrigo-Ilarri, Javier, Rodrigo-Clavero, María-Elena, Duskayev, Kassym K., Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros de Caminos, Canales y Puertos - Escola Tècnica Superior d'Enginyers de Camins, Canals i Ports, Serikbay, Nurgalym T., Tillakarim, Tursyn A., Rodrigo-Ilarri, Javier, Rodrigo-Clavero, María-Elena, and Duskayev, Kassym K.

Abstract

[EN] This study explores the potential application of the HBV model for simulating water inflow into the Astana reservoir in Kazakhstan. The Astana reservoir, with an area of 60.9 km2 and a capacity of 411 million m3, serves as a vital hydrotechnical structure for the regulation of long-term water resources. Positioned on the Esil River, this reservoir plays a crucial role in providing drinking water to Astana, the capital city of the Republic of Kazakhstan. This study presents a concise overview of the HBV model and includes hydrometeorological data as well as information from a digital elevation model constructed from altitude maps of the catchment areas of the Esil and Moildy rivers. To simulate the runoff from both rivers, the GAP optimization algorithm was employed. Model parameters were calibrated for the period spanning 1975 to 2020. The effectiveness of the model was evaluated using the Nash-Sutcliffe criterion, which confirms a strong correlation between the simulated runoff dynamics and observed data. This study's outcomes reveal the efficiency of the selected optimal parameters, particularly for the 2020-2022 timeframe, during which the HBV model's parameters were validated. Overall, the quality metrics achieved during both the calibration and validation periods are satisfactory, affirming the model's suitability for short-term runoff forecasts, especially during flood events. Furthermore, the model proves valuable for assessing potential shifts in river runoff patterns under the influence of climate change.

Published
2023

3. Study of temporal changes in the hydrographic network of small mountain rivers in the Ile Alatau, Kazakhstan.

Author

Duskayev, Kassym, Mussina, Ainur, Rodrigo-Ilarri, Javier, Zhanabayeva, Zhanara, Tursyngali, Marzhan, and Rodrigo-Clavero, María-Elena

Subjects
*ANTHROPOGENIC effects on nature, *MEANDERING rivers, *GEOGRAPHIC information systems, *RIVER channels, *REMOTE-sensing images, *BODIES of water
Abstract

The article presents the outcomes of an assessment of hydrographic network changes within the Almaty city, utilizing geographic information system (GIS) technology and Earth remote sensing data. Two gauge stations were selected along the main rivers within the Almaty city. To identify distinctive alterations in these rivers, hydrological data series encompassing the maximum runoff from 1970 to 2021 were collected and subjected to statistical analysis. Differential integral curves were constructed to pinpoint periods corresponding to peak and trough runoff levels. For each of these identified periods, the processing of satellite imagery allowed for the computation of meandering coefficients for the river channels. Additionally, refinements were made to the slope values of the rivers during these same timeframes, and connectivity graphs were established to elucidate the relationship between slope and liquid runoff for each period. The analysis encompassed an assessment of the impact of anthropogenic factors on both artificial and natural bodies of water while also considering shifts in the boundaries of the Almaty city. The findings derived from this study have practical applications in the planning and design of water supply systems and in the implementation of measures aimed at mitigating the adverse effects of anthropogenic factors on water bodies. [ABSTRACT FROM AUTHOR]

Published
2023
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4. Calculation of Bed Load Discharge for Coarse Sand.

Author

Myrzakhmetov, Akhan, Duskayev, Kassym, Tursunova, Aisulu, and Dostayeva, Aigerim

Subjects
BED load, BODIES of water, CLIMATE change, SAND, FLUVIAL geomorphology
Abstract

At present, during the period of intensive climatic changes, it is important to thoroughly take into account the hydrological regimes of water bodies. Оnе of the major conditions of ensuring hydrological safety of territories is а reliable forecast of stream-channel deformations and channel-related processes in the case of water bodies and their separate sections. This paper reviews different methods of calculating bed load discharge. Thus, a new technique оf calculation оf bed load discharge was developed with consideration of the probabilistic estimate оf the beginning оf bed load motion. The method shows satisfactory results compared to previous techniques in use. [ABSTRACT FROM AUTHOR]

Published
2022
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