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A Study on the Causes of Sediment Accumulation in the Drainage Systems

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Journal of Water Resource and Protection 2014年第4期6卷 224-235页

作者： cengiz koc Ebru Yilmaz Department of Civil Engineering Engineering FacultyBilecik Seyh Edebali UniversityBilecikTurkey Bozdogan Vocational School Adnan Menderes UniversityBozdoganTurkey

Accumulation of sediment and silt in the drainage canals is undesirable, yet inevitable occurrence in the course of the use and operation of any drainage canal network. In this study, D-25 drainage canal group, taking place in the Nazilli irrigation system with an area of 1165 ha is the only system where all planned activities have been completed. It has been determined that the drainage system was constructed according to original drainage project. The depth of accumulated sediment in the drainage canals in the research area was determined from the difference between the measured elevation and the elevation given in the design projects. The reasons for siltation in the D-25 drainage canal group have been studied by looking at the results of the elevation measurements made in 2010-2012. The measurements made in D-25 drainage canal group showed that there were significant differences between the actual structure (bridge, culvert, and conduit) bottom elevations and the elevations given in the design projects. In addition, the length of some canals would not coincide with the design project either. 83.3% (93.3% in length) of the canals had differences in structure bottom elevations. Of the total 55 structures 45 (81.8%) had a 0.10 m or more difference in bottom elevation from the project. Of the erroneous structures 73.3% had an average of 0.40 m, and 26.7% had an average of -0.25 m difference in bottom elevations from the design projects.

关键词： Drainage Canal Sediment Structure Design Project Turkey

Physically and Chemically Evaluation for the Water Quality Criteria in a Farm on Akcay

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Journal of Water Resource and Protection 2014年第2期6卷 63-67页

作者： Ebru Yilmaz cengiz koc Bozdogan Vocational School Adnan Menderes UniversityBozdoganTurkey Department of Civil Engineering Engineering FacultyBilecik Seyh Edebali UniversityBilecikTurkey

Akcay is a high flow stream supported with strong bracket and is emerging from border of Beyagac County in Denizli province. In this study, it was performed for determining some limnological traits of Akcay River in Bozdogan County in Aydin province. This study was conducted with a 12-month period between January 2010 and December 2010. The chosen pilot farm is raising fish (Oncorhynchus mykiss). The water of Akcay River is used on farm. Some limnological parameters (dissolved oxygen, temperature, pH, EC, nitrite, nitrate, orthophosphate, minerals) were investigated for determining the water quality of zone.

关键词： Turkey Akcay Pollution Water Quality

Mapping of Stream Flow Trends in Porsuk Basin Using GIS Environment

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Journal of Geoscience and Environment Protection 2019年第9期7卷 58-66页

作者： Yildirim Bayazit Recep Bakis cengiz koc Department of Civil Engineering Bilecik Seyh Edebali UniversityBilecikTurkey Department of Civil Engineering Anadolu UniversityEskisehirTurkey Department of City Regional Planning Mugla Sitki Kocman UniversityMuglaTurkey

In this study, trends of minimum, average and maximum flows were investigated in Porsuk basin, which is a sub-basin of Sakarya basin and then changes in flows were mapped using Geographical Information Systems (GIS). In the study, in 10 flow gauging stations across the Porsuk basin, monthly average, maximum and minimum flow data is used covering the period 1961-2013 (53 years). When analyzing the distribution of observed trends in the basin, a trend has been observed in most of the river flows. A decreasing trend has been observed overall in the basin. Trends are generally decreasing over time except for a few stations. As a result, increasing trends are observed in the west part of the basin;while in the east part of the basin decreasing trends are observed. When average and maximum monthly flows are investigated, decreasing trends are observed in the stations except DSI-12182. Trend analysis of 10 flow gauging stations across the Porsuk basin is investigated by Mann-Kendall method. Trend distribution was made according to flow trends of basin by transferring Z values to GIS.

关键词： Flow Gauging Station(FGS) Porsuk Basin Mann-Kendall Trend Analysis Geographical Information Systems(GIS)

Mapping of Precipitation, Temperature and Evaporation Distributions in the Porsuk Basin Using Distant Forecasting Methods

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Computational Water, Energy, and Environmental Engineering 2017年第4期6卷 321-350页

作者： Recep Bakis Yildirim Bayazit Hakan Uygucgil cengiz koc Department of Civil Engineering Anadolu UniversityEskisehirTurkey Department of Civil Engineering Bilecik Seyh Edebali UniversityBilecikTurkey Department of City and Regional Planning Faculty of ArchitectureMugla Sitki Ko&ccedil man University MuglaTurkey

Geographical data are of great importance in meteorology and climate science. These data can create the areal distribution models analyzed by spatial interpolation methods. The values of the areas without measurement data are estimated with these distribution models. In this study, distribution of meteorological parameters such as precipitation, temperature and evaporation in Porsuk basin, which is determined as research area, was investigated by Inverse Distance Weighting (IDW) and Ordinary Kriging methods. Actual meteorological data analyzed of the basin do not show a normal distribution statistically. Therefore, the data were firstly subjected to normalization and then analyzed according to the IDW and Ordinary Kriging methods to create distribution maps of precipitation, temperature and evaporation data. Quadratic mean error values were compared to investigate the reliability of analyzes. In this study, the analysis results of precipitation, temperature and evaporation data have been calculated by two different methods. Ordinary Kriging method has been determined as the method making the most accurate estimation.

关键词： Geographical Information Systems Inverse Distance Weighting Ordinary Kriging Meteorology Porsuk Basin Turkey

Formation of Eskisehir Province Flood Maps with Using of Geographical Information Systems

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Journal of Geoscience and Environment Protection 2019年第11期7卷 151-159页

作者： Yildırım Bayazit Recep Bakis cengiz koc Turgut Kaya Nedim Ozdemir Department of Civil Engineering Bilecik Seyh Edebali UniversityBilecikTurkey Department of Civil Engineering Eskisehir Technical UniversityEskisehirTurkey Department of City and Regional Planning Mugla Sitki Kocman UniversityMuglaTurkey Department of Construction Vocational SchoolBatman UniversityBatmanTurkey Department of Basic Sciences Faculty of FisheriesMugla Sitki Kocman UniversityMuglaTurkey

In this study, it is aimed to develop the flood risk analysis of Porsuk River, which is responsible for naming of the Porsuk Basin sub basin of Sakarya Basin, by utilizing the methods of Remote Sensing (RS) and Geographical Information Systems (GIS). In addition, flood elevation effects of Porsuk River in Eskişehir city and the regions around were investigated. Necessary data for study were obtained from Eskişehir 3. Regional Directorate of State Hydraulic Works archives. For analyses, the cross section of Porsuk River was defined in the Hydrologic Engineering Centers River Analysis System (HEC-RAS) software. Subsequently, recurring periods of 50, 100 and 1000 years discharge of Porsuk River which is calculated as 51.83 m3/s, 60.15 m3/s and 86.66 m3/s respectively were inputted in the software to obtain analysis results. Obtained results from the present study and topographic data were compared and interpreted. As a result, elevation of flood and its risks for urban regions were studied and presented.

关键词： GIS HEC-RAS Flood Porsuk River Eskisehir

MOTIONS OF CURVES IN THE GALILEAN SPACE G_3

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Acta Mathematica Scientia 2015年第5期35卷 1046-1054页

作者： Ufuk OZTURK Suleyman cengiz Esra Betul koc OZTURK Department of Mathematics Faculty of Science ank?r? Karatekin University

In this article, we study the flows of curves in the Galilean 3-space and its equiform geometry without any constraints. We find that the Frenet equations and the intrinsic quantities of the inelastic flows of curves are independent of time. We show that the motion of curves in the Galilean 3-space and its equiform geometry are described by the inviscid and viscous Burgers＇ equations.

关键词： Galilean geometry equiform geometry motions of curves inextensible flows Burgers' equation Frenet frames