Sürdürülebilir Yeşil Kampüs Koleksiyonu / Sustainable Green Campus Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7755
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Master Thesis Determination of Flood Risk Areas and Mitigation Strategies: a Case Study of the Menemen Plain, Izmir(Izmir Institute of Technology, 2019) Günseli, İsmail Gökhan; Demirkesen, Ali CanAccording to literature, natural disasters are increasing worldwide. Among them, flood is the most common and has the most impacts. Because of global warming and climate-patterns changing, frequency of floods has increased significantly. Also, the greatest impact among the human-oriented reasons are urbanization and industrialization. With the spread of urbanization, population in cities around the world has increased rapidly; natural areas have been destroyed, cities have been expanded. These changes have increased fragility in cities. Therefore, objective of the study was to determine flood risk areas and minimize negative impacts of floods. Accordingly, the study area; the Menemen Plain and its surroundings were found worthwhile to examine due to its topographic, climatic and hydrological structure. In this study, weighted-overlay analysis method was used in ArcGIS to determine flood risk areas employing six criteria. Therefore, six criteria that have an impact on flooding were identified as; (1) slope, (2) elevation, (3) distance from rivers, (4) distance from junction-points of river, (5) land use/cover, and (6) rainfall. The weights of criteria were assigned by land and literature investigation. According to the study, the highest risky flood locations with more population were seen as Emiralem, Kesik, Buruncuk and Çavuşköy settlements. On the other hand, medium flood risk settlements with more population were found as Seyrek, Yahşelli, Sasalı and Yenibağarası. Consequently, resilience and mitigation strategies were identified. It was stated that flood risk management should be managed in a participatory manner with a holistic approach and public-private-individual partnership with structural, non-structural measures.Master Thesis Investigation of Vegetation and Agricutural Soils in Relation To Groundwater by Using Geographic Information Systems (gis): a Case Study of Manisa, Alaşehir Basin(Izmir Institute of Technology, 2018) Budak, Seda; Demirkesen, Ali CanGroundwater is a natural resource that is directly or indirectly affected by any intervention in nature that we use in all areas of our life. In this sense, the issue of the groundwater is a study-subject that interests many professions and researches. Urban planning is a profession area that is directly related to the groundwater issues as decision-making on spatial and functional decisions about the city and the natural environment. However, groundwater resources are not taken into account as aboveground natural resources during the planning phase. Plans without consideration of groundwater potential cause threatening consequences for both existing natural resources and residents in the region. For this reason, the focus point of the thesis is the groundwater and its determination and investigation of relationship among the groundwater, vegetation, and agricultural soils. The aim of this thesis is to determine the groundwater potential (GWP) locations of Alaşehir Basin by a multi-criteria (proxies) method based on Geographic Information System (GIS) integrated with Remote Sensing (RS). The method used in this study includes 10 proxies as mult-criteria that play important roles on determination of the potential of the groundwater, combining these proxies in a digital media and illustrating output image maps of them. These proxies are: Normalized Difference Vegitation Index (NDVI), Modified Normalized Difference Water Index (MNDWI), land-use land-cover (LULC), lineament, topography (Digital Elevation Model – DEM), slope, drainage, lithology, hydraulic conductivity, and soil types. The main data sources of the study are: Landsat-8 OLI multi-spetral satellite image bands, the Aster Digital Elevation Model (DEM) of the study area and the GIS data layers from the institutions and research studies. According to study, the most GWP locations are seen in northeast of Salihli, in southeast of Alaşehir and around Dereköy. This findings are so important for planning in terms of groundwater pollution risk management.Master Thesis Environmental Impact and Capacity Analysis of Renewable Energy Resources: Case Study of Wind Energy in Turkey(Izmir Institute of Technology, 2016) Değirmenci, Sinem; Bingöl, Ferhat; Sofuoğlu, Sait Cemil; Bingöl, Ferhat; Sofuoğlu, Sait CemilThe majority of electricity in Turkey is generated from coal and natural gas; however, renewable energy, especially wind power, is a promising energy source for Turkey. Development of new wind energy project requires complex planning process involving many social, technical, economic, environmental, political concerns and different agents such as investors, utilities, governmental agencies or social groups. To address the proper site selection, a Geographic Information System (GIS) based Multi- Criteria Decision-Making (MCDM) method has been used in previous studies. The aim of this study is to develop a GIS-based multi-criteria decision making application which can be updated by the changing regulations to identify potential sites for wind power plants in Turkey. A variety of constraints and factors were identified based on a literature review, regulations and gathered from variety of agencies. After excluding of infeasible sites, pairwise comparisons was carried out using analytic hierarchy process (AHP) as MCDM method by the study group to estimate relative importance of the criteria. The suitability map obtained from MCDM analysis was divided into four classes from the low suitable to extremely suitable area. As a final stage, decision making was carried out with the objectives by environmental impact approach. The output of this study can be used by energy planners to estimate the extent that wind energy can be developed based on public perception, administrative and environmental aspects.Master Thesis Gis-Based Multi-Criteria Approach for Land-Use Suitability Analysis of Wind Farms: the Case Study of Karaburun Peninsula, Izmir,-Turkey(Izmir Institute of Technology, 2015) Sediqi, Khwaja Jawid; Özdemir, Semahat; Saygın, Mustafa Ömür; Saygın, Mustafa Ömür; Özdemir, SemahatThis study presents a GIS-based multi-criteria approach to identify the most preferred or suitable site for wind farms development in Karaburun Peninsula, İzmir. Criteria for analysis have been identified based on literature review and experts’ opinions. The selected criteria include environmental, technical, and economic as well as social factors. In order to estimate the weights or relative importance of the criteria, the pairwise comparison method in the context of Analytic Hierarchy Process (AHP) is implemented. The overall suitability of the study area is determined through the Weighted Overlay method, which is a sufficient weighted approach in geographical information system (GIS) environment. The outcome or suitability map is classified into five scored classes from the most suitable to less suitable and restricted area. On the whole, as the selection of optimal site for the wind farm development is a multi-dimensional process, this thesis intends to consider the following three significant subjects; (a) evaluating and identifying the most influential criteria for land suitability analysis of wind farms, (b) applying AHP as a multi criteria decision-making method to determine the criteria weights, (c) utilizing GIS as a tool to overlay the overall criteria and consequently to identify the potentially suitable location for the wind farms development. Regarding to the above mentioned, eight the most influential available criteria, which are consisted of wind potential, distance from preservation area, distance from settlements, forest, slope, elevation, distance from roads, and agriculture area are identified. Base on pairwise comparison different weights for each criterion is determined. Finally, by using GIS the suitability map for the study area is provided and the result compared with the existing wind farm locations.