Browsing by Publisher "Corvinus University of Budapest"
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Item The study of surface water quality in Buyuk Menderes River (Turkey): Determination of anionic detergent, phosphate, boron and some heavy metal contents(Corvinus University of Budapest, 2018) Minareci O.; Cakir M.; Minareci E.The Buyuk Menderes basin is very wide and the people living here deal with farming, which increases the importance of the river to the region. The pollution of the river increases because the industry, urbanization and agricultural activities are very intense in the river basin. For this reason, the aim of this study is to map the extent of pollution of Buyuk Menderes River, to detect sources causing pollution in the river and also to suggest solutions for taking necessary precautions. Anionic detergent, phosphate, boron and heavy metal concentrations were determined in water samples taken from Buyuk Menderes River in this study. Mean concentrations of anionic detergent, phosphate, boron, copper, chrome, nickel and lead were found 0.2345 mg l-1, 0.0181 mg l-1, 0.8352 mg l-1, 0.0035 mg l-1, 0.0045 mg l-1, 0.0247 mg l-1, 0.0002 mg l-1, respectively. © 2018, ALÖKI Kft., Budapest, Hungary.Item A novel approach for drought characterization based on performance-oriented SPI: An illustrative case of Southeastern Anatolia region, Turkey(Corvinus University of Budapest, 2018) Yilmaz B.Drought is a main water-related natural hazard due to its features, sensitivities and effects to all sectors. According to climate change scenarios, drought hazards are expected to be more devastating, especially in arid and semi-arid regions. Drought characterization is essential to be aware of expected negative effects of droughts as well as to devise water management plans including possible mitigation measures. To this end, many drought indices have been developed for drought analysis, one of which is the Standardized Precipitation Index (SPI) that is widely used worldwide. In this study, a new drought index is proposed, namely the Drought Power Index (DPI), based on the SPI with orientation by reliability-resilience-vulnerability (RRV) concept. The use of the RRV approach with the SPI time series empowers the drought characterization by considering the frequency of drought event, drought recovery period as well as the severity of droughts-once a drought has occurred. Since the drought is identified as an unfavorable phenomenon, the DPI ranges from 0 to 1 where the higher values indicate higher drought devastating features (probability, duration and extremity of drought) and vice versa. The proposed approach is illustrated with reference to the Southeastern Anatolia Region, Turkey. The long-term (1970-2017) monthly precipitation data of eight meteorological stations under the operation of General Directorate of Meteorological Services of Ministry of Forestry and Water Affairs are used in the study. The 12-month SPI time series, which were later used for calculations of DPI, were obtained by the use of SPI_SL_6 software. The study revealed that there has been an increasing trend in DPI values in the basin, especially after 1993. It is concluded that the DPI is a valuable indicator for (i) spatially and temporally evaluating the drought characteristics, (ii) analysing meteorological, agricultural and hydrological drought severity with its coherent capability with SPI, (iii) ranking the regions in accordance with the drought vulnerability conditions. © 2018, ALÖKI Kft., Budapest, Hungary.Item Analysis of hydrological drought trends in the GAP region (southeastern Turkey) by Mann-Kendall test and innovative sen method(Corvinus University of Budapest, 2019) Yilmaz B.The analysis of drought trends plays a significant role in the efficient water resource management, especially in arid and semi-arid regions. Assessing the drought trends by drought indices, of which the Standardized Precipitation Index (SPI) is the most popular, is a reasonable way, because the drought indices measure the climatic anomalies through their severity, duration and frequency. In this study, the possible hydrological drought trends in the GAP region (Southeastern Turkey) were investigated by the use of 12- and 24-month SPI series. The SPI series were determined by 48-year-long (1970-2017) monthly precipitation data monitored at nine selected stations (Mardin, Adiyaman, Batman, Diyarbakir, Siirt, Şirnak, Gaziantep, Kilis and Şanliurfa) in the GAP region. In the analyses, a recent graphical trend detection method entitled Innovative Şen Metod (ISM) and Mann-Kendall trend test (MK) were used. The ISM has non-parametric basis without any restrictive assumption, moreover, its application is rather simple when compared with the other trend identification methods. The ability to identify the trends of low, medium and high values of a series is the innovative side of the ISM. Since the significance test is a crucial factor to identify the possible trends scientifically, the results were statistical tested at the 0.05 significance level in the methods. The ISM and MK test both revealed that, Mardin is the most vulnerable province in the region, due to the significant decreasing trend, which determined by 12-month and 24-month SPI values. Şanliurfa, Kilis, Siirt, Diyarbakir and Batman are second order drone prone provinces. In accordance with the results of the ISM, there is an increasing trend in normal and wet conditions in Gaziantep, Şirnak and Adiyaman. Specifically, the results highlight that the central of the GAP region has a tendency toward the heavier droughts in the future. It is also concluded that the ISM is a valuable tool with its simplicity as well as the inherent properties to deduce qualitative information. © 2019, ALÖKI Kft., Budapest, Hungary.Item Mapping protected areas by gis method: A case study of izmir city, ÇeŞme district (turkey)(Corvinus University of Budapest, 2020) Ankaya F.; Türkyilmaz B.; Köse H.In Turkey, in order to protect nature, there are strategies and categories depending on differences between local environmental conditions as in many countries in the world. The term of “protected environments”, is also supported by laws as in other countries around the world. Natural protected environments are divided into the following three categories “Critical Environments under the Protection of Law” (SAPUL), “Natural Protected Environments with Qualifications” and “Sustainable Protection and Controlled Usage Environments”, according to the resolution Conditions of Protection and Use of Natural Protected Environments, dated 2017, of Turkish Republic Ministry of Environment and Urban Planning. A map of Natural Protected Environments has been generated as a result of evaluation of 81 polygons which have been specified as natural protected environment borders by the Protection Commission of the Turkish Republic Ministry of Environment and Urban Planning, the strategy for determining (SAPUL) is approached as this article’s subject. According to this strategy, in Çeşme (Izmir/Turkey) district, 20 polygons were specified to belong to the categories (SAPUL) among 81 polygons based on the terms and definition of the resolution of Izmir City and Çeşme district. Borders of natural protected environments, which were specified by the protection commission of the Turkish Republic Ministry of Environment and Urban Planning, each polygon is generated based on up-to-date land use information, have been formed based on the visuals taken from İKONOS satellite in 2017. The natural areas that carry the status of SAPUL were specified based on the specifications of the landscape and criteria of landscape assessment as the “use of the land”, “live natural landscape”, “historical landscape”, Hereat, each polygon has been evaluated and mapped according to their specifications of landscape. Primarily, sample map has been created by using quantitative evaluation, which is supported by geographical information system (GIS). It is thought that this strategy will be useful for the resolutions that will be taken by the Committee on Conservation of Cultural Assets in Turkey in the Ministry of Environment and Urban Planning. © 2020, ALÖKI Kft., Budapest, Hungary.Item ASSESSMENT OF THE SURFACE WATER QUALITY IN THE KUCUK MENDERES RIVER, TÜRKİYE(Corvinus University of Budapest, 2024) Minareci O.; Koruk M.The Kucuk Menderes River is one of the important rivers of the Aegean Region in Türkiye. The river carries agricultural pollution and domestic and industrial wastewater to the Aegean Sea. Therefore, the aim of this study is to determine the parameters of pollution in the Kucuk Menderes River. The parameters of pH, temperature, dissolved oxygen, conductivity, salinity, turbidity, phosphate, ammonium nitrogen, nitrite, nitrate, boron, total coliform and fecal coliform were determined. The average values of these parameters were the followings: pH 9.27, temperature 19.5°C, dissolved oxygen 4.92 mg/L, conductivity 2695 µs/cm, salinity 0.4‰, turbidity 177 mg/L, phosphate 0.17 mg/L, ammonium nitrogen 0.43 mg/L, nitrite nitrogen 0.09 mg/L, nitrate nitrogen 1.73 mg/L, boron 1 mg/L. The values were compared with the criteria values specified in the regulations and those in other studies. © 2024, Corvinus University of Budapest. All rights reserved.