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The proposal parameters of the small water reservoir in GIS environment.
Feltl, Jakub ; Ivana,, Kameníčková (referee) ; Doležal, Petr (advisor)
This report deals with rainfall-runoff modeling and small water reservoir projection with usage of modern software equipments (GIS, HEC-HMS), using maximum number of available data sources (BPEJ, LPIS, N-year rainfall gages, 3D contours …). The advantage of this method is that it is possible to predict the shape of hydrograph and flood wave volume as well. Other methods cannot offer judgment of flood wave volume and hydrograph shape as this method does. The most important thing in small water reservoir projection is the flood wave volume value, which is undervalued nowadays using wrong evaluation. This method’s advantage is variability of scenarios depending on soil surface, used agricultures, hydraulic and hydrologic parameters etc.
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Use of selected artificial intelligence methods for finding small watersheds most at risk of flash floods
Ježík, Pavel ; Fošumpaur, Pavel (referee) ; Hlavčová,, Kamila (referee) ; Starý, Miloš (advisor)
In our region, heavy rains may occur virtually everywhere. Nowadays there are instruments to predict these events in sufficient advance, but without precise localisation, which is a problem. Present instruments for searching endangered watersheds are focused on operative evaluation of meteorological situation and actual precipitation forecast processing (nowcasting). The thesis brings quite different approach. Potentially endangered areas are detected with evaluation of long-term statistical variables (N-year discharges and rain characteristics) and properties of specific watershed. The whole issue is handled out of situation of actual danger, this attitude is so called off-line solution. The thesis describes a model based on selected artificial intelligence methods. The model forms the core of final map application. The use of model and final application is supposed to be used in area of preventive flood protection, and related investment decision-making. The model focuses on heavy rains and flash floods.
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Determination of Pb sources in small catchment using Pb isotopes.
Krajíčková, Michaela ; Mihaljevič, Martin (advisor) ; Strnad, Ladislav (referee)
The contents and isotopic composition of lead (Pb) were studied in a small forested catchment Lesní potok. The catchment is located 30 km southeast from Prague near Jevany. Monitoring inputs and outputs in GEOMON, a network of small forested catchments in the territory of the Czech Republic, has been coordinated by the Czech Geological Survey since 1994. It was analyzed litter of spruce and beech, collected between 2013 and 2014, and an archival sample litter of spruce from 1997. Lead in soil was studied at two profiles cambisols in each diagnostic horizons. Samples of profile LP 38 were collected in 2005, the LP 39 a year later. Surface water and bulk precipitation were sampled monthly for one hydrological year 2013. The ICP-MS method was used to determine the concentration and isotope ratios of lead. To determine of sources Pb were used isotope ratios 206 Pb/207 Pb and 208 Pb/206 Pb. In spruce litter (3,87 mg.kg-1 ) was measured average Pb concentration higher than beech (0,98 mg.kg-1 ). Topsoil horizons contain elevated concentrations of Pb (up to 100,70 mg.kg-1 ) decreasing towards the deeper horizons. The Pb concentration in the soil was 61,28 mg.kg-1 . Bulk precipitation in with average Pb concentrations206 Pb/207 Pb = 0.87 µg.l-1 contained more Pb than surface water 206 Pb/207 Pb = 0.50 µg.l-1 ....
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Mapping of the Litavka catchment using GPS
Hojcsková, Daniela ; Matějíček, Luboš (advisor) ; Brůna, Josef (referee)
This thesis is aimed on the study of Global Positioning System (GPS) and its utilization possibilities in nature sciences such as ecology, hydrology, botany and the others. The main contribution of this work is the investigation of current possibilities of the most accurate data collection by using GPS and their subsequent processing in GIS with focus on small catchment. Other methods of terrain data collection are described and compared with GPS in this work, as well. Practical part of the thesis focuses on characteristics of the locality, technical equipment and data editing gained in terrain. The study locality is the Litavka catchment, which is situated in Brdy. The geographical ground data, were gained from ZABAGED and were completed with results of own measuring in terrain. The output of the thesis is the digital terrain model of upper stream of the Litavka River modified by interpolation. Key words: GPS, DTM, GIS, mapping, catchment, Litavka, interpolation
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Use of selected artificial intelligence methods for finding small watersheds most at risk of flash floods
Ježík, Pavel ; Fošumpaur, Pavel (referee) ; Hlavčová,, Kamila (referee) ; Starý, Miloš (advisor)
In our region, heavy rains may occur virtually everywhere. Nowadays there are instruments to predict these events in sufficient advance, but without precise localisation, which is a problem. Present instruments for searching endangered watersheds are focused on operative evaluation of meteorological situation and actual precipitation forecast processing (nowcasting). The thesis brings quite different approach. Potentially endangered areas are detected with evaluation of long-term statistical variables (N-year discharges and rain characteristics) and properties of specific watershed. The whole issue is handled out of situation of actual danger, this attitude is so called off-line solution. The thesis describes a model based on selected artificial intelligence methods. The model forms the core of final map application. The use of model and final application is supposed to be used in area of preventive flood protection, and related investment decision-making. The model focuses on heavy rains and flash floods.
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|
| |
|
|
Determination of Pb sources in small catchment using Pb isotopes.
Krajíčková, Michaela ; Mihaljevič, Martin (advisor) ; Strnad, Ladislav (referee)
The contents and isotopic composition of lead (Pb) were studied in a small forested catchment Lesní potok. The catchment is located 30 km southeast from Prague near Jevany. Monitoring inputs and outputs in GEOMON, a network of small forested catchments in the territory of the Czech Republic, has been coordinated by the Czech Geological Survey since 1994. It was analyzed litter of spruce and beech, collected between 2013 and 2014, and an archival sample litter of spruce from 1997. Lead in soil was studied at two profiles cambisols in each diagnostic horizons. Samples of profile LP 38 were collected in 2005, the LP 39 a year later. Surface water and bulk precipitation were sampled monthly for one hydrological year 2013. The ICP-MS method was used to determine the concentration and isotope ratios of lead. To determine of sources Pb were used isotope ratios 206 Pb/207 Pb and 208 Pb/206 Pb. In spruce litter (3,87 mg.kg-1 ) was measured average Pb concentration higher than beech (0,98 mg.kg-1 ). Topsoil horizons contain elevated concentrations of Pb (up to 100,70 mg.kg-1 ) decreasing towards the deeper horizons. The Pb concentration in the soil was 61,28 mg.kg-1 . Bulk precipitation in with average Pb concentrations206 Pb/207 Pb = 0.87 µg.l-1 contained more Pb than surface water 206 Pb/207 Pb = 0.50 µg.l-1 ....
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|
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Mapping of the Litavka catchment using GPS
Hojcsková, Daniela ; Matějíček, Luboš (advisor) ; Brůna, Josef (referee)
This thesis is aimed on the study of Global Positioning System (GPS) and its utilization possibilities in nature sciences such as ecology, hydrology, botany and the others. The main contribution of this work is the investigation of current possibilities of the most accurate data collection by using GPS and their subsequent processing in GIS with focus on small catchment. Other methods of terrain data collection are described and compared with GPS in this work, as well. Practical part of the thesis focuses on characteristics of the locality, technical equipment and data editing gained in terrain. The study locality is the Litavka catchment, which is situated in Brdy. The geographical ground data, were gained from ZABAGED and were completed with results of own measuring in terrain. The output of the thesis is the digital terrain model of upper stream of the Litavka River modified by interpolation. Key words: GPS, DTM, GIS, mapping, catchment, Litavka, interpolation
|
|
|
The proposal parameters of the small water reservoir in GIS environment.
Feltl, Jakub ; Ivana,, Kameníčková (referee) ; Doležal, Petr (advisor)
This report deals with rainfall-runoff modeling and small water reservoir projection with usage of modern software equipments (GIS, HEC-HMS), using maximum number of available data sources (BPEJ, LPIS, N-year rainfall gages, 3D contours …). The advantage of this method is that it is possible to predict the shape of hydrograph and flood wave volume as well. Other methods cannot offer judgment of flood wave volume and hydrograph shape as this method does. The most important thing in small water reservoir projection is the flood wave volume value, which is undervalued nowadays using wrong evaluation. This method’s advantage is variability of scenarios depending on soil surface, used agricultures, hydraulic and hydrologic parameters etc.
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