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Application of degree-day accumulation and snowmelt model in the Ptačí Brook basin
Beitlerová, Hana ; Jeníček, Michal (advisor) ; Pavlásek, Jiří (referee)
Snow accumulation and snowmelt research is one of the most important hydrological issues in mountain areas World-wide. Spring snowmelt, usually in the combination with intensive rainfall or high air temperature, is one of the most common causes of flooding in the Czech Republic. Mathematical modeling of hydrological processes belongs to effective instruments of flood protection and finds its use in a variety of areas. For example, water management, hydrological forecasts for agriculture, information for dam regulation or for recreational areas and water sports are all affected. This thesis focuses on snow accumulation and snowmelt modeling with use of the empirical Degree-day method. This method is based on the relationship between snowmelt rate and air temperature. The American HAC-HMS programme is used for the simulation of hydrological processes. The main goal of this thesis is to calibrate the model and to simulate snow accumulation, snowmelt and run-off from the watershed. The experimental basin 'Ptačí potok' is situated in the central part of the Šumava Mountains, in altitude of about 1,200 m. Two winter seasons, 2011 and 2012, were simulated. Simulations showed high reliability and correct calibration of the Temperature index snowmelt model. Simulations of the snow water equivalent evolution...
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Application of degree-day accumulation and snowmelt model in the Ptačí Brook basin
Beitlerová, Hana ; Jeníček, Michal (advisor) ; Pavlásek, Jiří (referee)
Snow accumulation and snowmelt research is one of the most important hydrological issues in mountain areas World-wide. Spring snowmelt, usually in the combination with intensive rainfall or high air temperature, is one of the most common causes of flooding in the Czech Republic. Mathematical modeling of hydrological processes belongs to effective instruments of flood protection and finds its use in a variety of areas. For example, water management, hydrological forecasts for agriculture, information for dam regulation or for recreational areas and water sports are all affected. This thesis focuses on snow accumulation and snowmelt modeling with use of the empirical Degree-day method. This method is based on the relationship between snowmelt rate and air temperature. The American HAC-HMS programme is used for the simulation of hydrological processes. The main goal of this thesis is to calibrate the model and to simulate snow accumulation, snowmelt and run-off from the watershed. The experimental basin 'Ptačí potok' is situated in the central part of the Šumava Mountains, in altitude of about 1,200 m. Two winter seasons, 2011 and 2012, were simulated. Simulations showed high reliability and correct calibration of the Temperature index snowmelt model. Simulations of the snow water equivalent evolution...
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Methods of modelling the runoff from snow cover. Case study: Headwater area of Bystřice River
Hasa, Martin ; Jeníček, Michal (advisor) ; Taufmannová, Alice (referee)
This bachelor thesis deals with the issue of modelling the runoff from melting snow. The main objective is to evaluate two basic methods: degree-day approach and energy balance method. Part of the thesis is the application of degree-day approach in the headwater area of Bystřice River in the Krušné Mountains. Degree day factors were calculated using air temperature and flow rates in the closure profile for the spring snowmelt period in years 2009 and 2010. Degree Day factors were used for modelling the runoff from melting snow. Study results were compared with the findings published in the literature. Key words: temperature index, degree-day approach, energy balance of snow cover, snowmelt modelling
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