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The archive of the Otava river floods and design of analog-based forecasting method
Vlasák, Tomáš ; Hladný, Josef (advisor) ; Soukalová, Eva (referee) ; Kříž, Vladislav (referee)
(EN): Study of historical flood events is important as a base for hydrological studies, as well as for proposal offlood control measures and real-time flood forecasting helping forecasters to support their decisions. This work deals with proposal of Flood Archive (databa of flood event) and its app|ication in the scope offlood protection ofotava river basin to Písek water gauge. The objective was to pťopose Archive of historical floods containing information about casual synoptical situation, connected weather phenomena (precipitation, temperature) and runoff response. Flood formation mechanism in otava river basin was described using this Archive. A forecasting technique based on analogue method was designed. This technique searches historical records for flood events of similar causes and estimates possible development of runoff response. Archive consists of 72 flood events that occurred between I 890 and 2006 and their peak flow in all cases exceeded given threshold discharge in Písek closin. profile (lO-year return period for 1890-196,l and ,l -year return period for 1961-2006). Available historical data was gathered and processed inÍ.lgraphic form (maps, graphs' tables). F|ood Archive is part of the di ssertation thesis. The most outstanding features of flood formation mechanism in otava river...
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Lakes of the Czech Republic physico-geographical a physico limnological characteristics
Šobr, Miroslav ; Janský, Bohumír (advisor) ; Kříž, Vladislav (referee) ; Vrba, Jaroslav (referee)
J e ze r a C e s kér ep ub l i lE fyz i c ko ge o g r af c kéa fyz i ká lně J i ntno l o gi cké p o mě ry Lakes of the Czeclt Republic physico-geographical and physicoJimnological clnracteristics (Etiglish veÍsion) IntroducÍiotl In comparison with other European regions, there are orrly a few oflakes oťnatural origin in the Czech Republic. In our country, there are neither high mountains with network of glacial lakes nor vast lowlands of northem type with tlre lďie plateau' There are neither vast, fully developed karsts regions, nor active volcanic areas nor sea shores. The fluvial lakes originated in tlre floodplains oťseveral waterways are one tlre most numerolls types of lakes ir-r the courrtry. In the river floodplains there had been massive rnining of gravel-sand alluvium sedirnents which is connected to tlre origination oť the lakes o| arrthropogenic origin. These ale also rather frequent irr the areas of coal mining, especially of lignite coal and other mineral resources. And the last numerous type of lakes includes the water bodies in the peat bog and moor land areas which are scattered alorrg the wlrole mountain border range in the Czeclr Republic (JANSKÝ, ŠosnBr AL. 2003). In comparison to the world's lakes, the lakes in the Czecir Republic are of far smaller size and volume dimensions. They are...
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Streamflow generation process and its dynamics in the Otava river headwaters
Kocum, Jan ; Janský, Bohumír (advisor) ; Hladný, Josef (referee) ; Kříž, Vladislav (referee)
In context of catastrophic floods and extreme droughts in recent years there is an urgent need of solving of issues dealing with protection against hydrological extremes, not using just classical engineering methods but also untraditional practices. There is a new protection strategy focusing on gradual increase of river catchment retention capacity including its headwater regions. All of the issues related to various possibilities and measures leading to river headstream areas retention capacity increase should be discussed by experts in various fields taking into account objectives and priorities of a supra-regional, regional and local significance. Natural runoff process is affected by man already by its birth, thus in headwaters where numerous procedures related to runoff retardation and water retention increase in headstream areas could be realized. Suitable conditions for the research realization at present is related to the Otava River headwaters (sw. Czechia) representing the core zone of a number of extreme runoff events and with high heterogeneity in the terms of physical-geographic and socio-economic aspects. To understand and clarify the runoff generation process and the effect of various physical-geographic factors on its dynamics, the detailed analyses of runoff regime in chosen...
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The archive of the Otava river floods and design of analog-based forecasting method
Vlasák, Tomáš ; Hladný, Josef (advisor) ; Soukalová, Eva (referee) ; Kříž, Vladislav (referee)
(EN): Study of historical flood events is important as a base for hydrological studies, as well as for proposal offlood control measures and real-time flood forecasting helping forecasters to support their decisions. This work deals with proposal of Flood Archive (databa of flood event) and its app|ication in the scope offlood protection ofotava river basin to Písek water gauge. The objective was to pťopose Archive of historical floods containing information about casual synoptical situation, connected weather phenomena (precipitation, temperature) and runoff response. Flood formation mechanism in otava river basin was described using this Archive. A forecasting technique based on analogue method was designed. This technique searches historical records for flood events of similar causes and estimates possible development of runoff response. Archive consists of 72 flood events that occurred between I 890 and 2006 and their peak flow in all cases exceeded given threshold discharge in Písek closin. profile (lO-year return period for 1890-196,l and ,l -year return period for 1961-2006). Available historical data was gathered and processed inÍ.lgraphic form (maps, graphs' tables). F|ood Archive is part of the di ssertation thesis. The most outstanding features of flood formation mechanism in otava river...
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