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Hydrological drought in the context of climate change: Case study of the Blšanka and Loděnice basins
Burian, Alois ; Janský, Bohumír (advisor) ; Hanel, Martin (referee)
The final thesis deals with the issue of hydrological drought in the context of climate change. The basins of the Blšanka River and the Loděnice River have been suffering from water shortages in recent years, therefore they have been selected for the purposes of this final thesis. The thesis summarizes the basic principles used to estimate climate change on the water resources with emphasis on the occurrence of hydrological drought. At the same time, individual components and processes of hydrological modelling conditioning the formation of affected time series in the near (2020-2050) and far future (2070-2100) are described. A total of sixteen simulations created from the seven global climate models (GCM) of the CMIP5 project and three climate scenarios (RCP; Representative Concentration Pathways) are used. The time series of precipitation and air temperature, which have been influenced by the climate change, were derived by an advanced delta method that counts also with the change of variability. The conceptual hydrological model BILAN is used to simulate changes, due to its availability from the T. G. M. Research Institute of Water Management and its wide use in Czech conditions. The parameters of the BILAN model are calibrated based on the observed time series of both selected river basins....
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Hydrological drought in the Loděnice basin
Burian, Alois ; Janský, Bohumír (advisor) ; Skála, Vít (referee)
The aim of the bachelor thesis is to analyse of the current situation of the selected basin of Loděnice which has suffered a significant drought in recent years. The first part of the thesis is a literary research which presents drought as a complex phenomenon. The literary research is based on domestic and foreign literature. The thesis describes its genesis, connections with other types of drought, indicators of drought and possible consequences. The research includes physical-geographical characteristics of the area. The practical part is based on the data obtained from the CHMI (Czech Hydrometeorological Institute) and introduces the runoff regime of Loděnice river with a focus on the period of drought in the past and now. Hydrological drought is evaluated using the threshold limit method and deficit volumes. It has been detected that the basin of Loděnice is still under the larger impact of hydrological drought, especially in August and September. Keywords: hydrological drought; runoff regime; deficit volumes; threshold limit method, Loděnice river
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Climatic change effect on hydrological drought in the Otava River headwaters
Šachová, Barbora ; Kocum, Jan (advisor) ; Fiala, Theodor (referee)
CLIMATIC CHANGE EFFECT ON HYDROLOGICAL DROUGHT IN THE OTAVA RIVER HEADWATERS Abstract The submitted thesis deals with hydrological drought in condition of climate change in Otava River headwaters. The topic is discussed from four different aspects that together create a complex view on the hydrological drought issues in the catchment. The first aspect, the hydrological drought analysis in daily series, is done by threshold level method and SPA. Second aspect studies the impact of climate change on the hydrological drought by using the BILAN model. Following aspect determines a prediction of low flows and deficit volumes during drought by the recession analysis. Final aspect suggests relating process of management, planning and adaptation measures on drought. Key words: hydrological drought, minimal discharges, deficit volumes, BILAN model, climatic change, recession analysis, Otava River, Modrava, Rejštejn, Sušice, adaptation measures
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