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    Wyświetlanie 1-7 z 7
    Tytuł:
    Synthetic unit hydrograph of small catchments by using GIS
    Autorzy:
    Günal, A.
    Güven, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1068510.pdf
    Data publikacji:
    2016-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    92.40.-t
    92.10.Yb
    Opis:
    In this study, synthetic unit hydrograph parameters which are q_{p}, t_{p}, t_{b} are calculated by using Synder, Mockus, SCS (Soil Conservation Service) and DSI (State Hydraulic Works) methods. First according to observed data, calculations were done. Then the mentioned above methods, which are based on both topographic map and geographic information systems values, were applied. Three catchments, Damlıca, Vize, Kumdere were studied. Synder, Mockus, SCS and DSI methods were applied for each catchment.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 1; 130-132
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of Geomorphological Parameters of Damlıca Basin Using GIS
    Autorzy:
    Günal, A.
    Güven, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1401983.pdf
    Data publikacji:
    2015-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    92.40.Pb
    Opis:
    In this study, the geomorphologic parameters of Damlıca basin are determined by using Geographic Information Systems (GIS). The digital elevation model (DEM) of the basin is downloaded from Aster-GDEM web page and this digital map is used in the GIS computer program to obtain the geomorphologic parameters of the Damlıca basin, such as the area of the basin, its perimeter, river length, slope, etc. The extracted parameters are compared with the parameters obtained by conventional methods. This study shows that the geomorphologic parameters of the Damlıca basin obtained using GIS are much more precise than those produced by conventional methods.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 2B; B-222-B-224
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multi-output neural networks for estimation of synthetic unit hydrograph parameters: A case study of a catchment in Turkey
    Autorzy:
    Güven, A.
    Günal, A.
    Günal, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1054964.pdf
    Data publikacji:
    2017-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    92.40.FB
    92.40.QP
    07.05.MH
    Opis:
    For developing unit hydrographs of catchments, the detailed information about the rainfall and the resulting flood hydrographs are needed. Such information, however, is available only for a few locations and for the remote locations such information is normally very scanty. In this study, Snyder based synthetic unit hydrographs were developed by using both, the digitized map and the digital elevation model of a case study of a small catchment in Turkey. Multi-output neural network technique was applied to predict three unit hydrograph parameters: peak discharge q_{p}, time to peak t_{p} and time base t_{b} of a number of unit hydrographs observed in the catchment, based on most relevant geomorphological and meteorological parameters. Multi-output neural network was observed to outperform the conventional synthetic unit hydrograph methods. The advantage of the proposed multi-output neural network is based on the fact that it predicts the three parameters of the unit hydrograph, based on a single model, compared to the conventional neural network technique, which utilizes a model for each parameter.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 3; 591-594
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cross-Drainage Culvert Design by Using GIS
    Autorzy:
    Günal, M.
    Ay, M.
    Günal, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031809.pdf
    Data publikacji:
    2017-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    92.40.FB
    92.40.QP
    07.05.MH
    Opis:
    A culvert is a structure that allows water to flow under a road, railroad, trail, or similar obstruction, from one side to the other side. Typically embedded, so as to be surrounded by soil, a culvert may be made from a pipe, reinforced concrete or other material. In order to minimize the impact of a water crossing on the environment, culverts require the proper size, design and installation, to ensure that they do not cause downstream erosion, upstream flood, alter stream habitat or block organism passage. In this study, the size of a box culvert has been determined by getting more realistic maximum flow rates, by using data of a geographic information system. The results of this study have been compared with the rational method. The size of the culvert, which is calculated by using data from geographic information system will be more realistic and efficient, compared to the culvert, calculated by rational method.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 3; 595-598
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Local Scour around Group Bridge Pier with Different Shapes
    Autorzy:
    Günal, M.
    Gelmeran, T.
    Günal, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031618.pdf
    Data publikacji:
    2017-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    92.40.GC
    92.10.WA
    Opis:
    This study is based on laboratory experiments for computing depth of local scour around group bridge pier, considering the effects of upstream flow conditions, size of pier, median size of bed material and spacing between bridge piers on the maximum scour depth and scour pattern around bridge piers. The study was conducted using a physical hydraulic model for bridge piers, operated under clear-water condition and using uniform cohesionless sand as bed material. Three different models of bridge piers, having different sizes were used for showing the effect of the size on the local scour.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 3; 632-633
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of GIS for Predicting Quality of Underground Water for Drinking
    Autorzy:
    Günal, M.
    Kösen, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1401926.pdf
    Data publikacji:
    2015-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    92.40.kc
    Opis:
    Gaziantep is located at the south-east part of Turkey. Drinking water needs of Gaziantep city are increased because of population in last decade. Some amounts of drinking water are supplied to Gaziantep from underground. Because of large amount of industrial areas and settlement, quality of ground water is decreased in years. Therefore governors of the city should know which part of the city has a potential of having good quality of drinkable underground water. In this study, 9 wells in the city centre area of Gaziantep city are determined and water samples were taken from these wells. Then water samples were analyzed in the laboratory of GASKİ (Gaziantep Water and Sewage Management). The laboratory results of underground water from each well are entered to ArcGIS program with the digital elevation map of Gaziantep to predict the quality of the underground water of Gaziantep. The ArcGIS program produced quality maps of drinkable water in Gaziantep. These maps show the dynamic and static water levels in the well, pH level, bromide, sulfate, free chlorine, hardness, turbidity, nitrate, and fluoride. This study shows that ArcGIS program is very useful tool to make the quality maps of groundwater for a specific area.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 2B; B-107-B-109
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental investigation of turbulent flow field at downstream-facing round nosed pier
    Autorzy:
    Günal, M.
    Ismael, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1068628.pdf
    Data publikacji:
    2016-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    47.85.-g
    47.80.Cb
    Opis:
    Bridge pier in a flow induce turbulence and vortices that increase the risk of sediment bed scouring. The turbulent flow field around downstream-facing round nosed pier in a scoured bed was examined experimentally. The opposite bridge pier was embedded in a non-uniform soil with d₅₀=1.45 mm and σ_{g} =3.16. Experiments were carried out under live-bed condition. Flow velocities were measured with acoustic Doppler velocimeter. Measurement was conducted at the pier front. Result shows that the time-average velocity field, turbulent intensities and turbulent kinetic energy at different depths and distances from the original bed level differs. These results are benefiting for validation of three-dimensional flow model and turbulence close to the bridge pier.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 1; 126-127
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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