Sürdürülebilir Kalkınma Amaçları

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• MakaleAçık Erişim2026Scopus SJRQ1/r/munzur/1487
  Geospatial evaluation of river basin small hydropower potential using AHP

  Korkmaz, Meral

  This study develops an integrated Geographic Information Systems (GIS) and Analytic Hierarchy Process (AHP) framework to accurately identify small hydropower plants sites that support sustainable water–energy planning. The approach is applied to the Peri River Basin in Eastern Türkiye by combining multisource remote sensing datasets with a semi-automated narrow-valley detection technique to enhance the spatial precision of site selection. Nine hydrological and physiographic criteria including stream order, rainfall, slope, geology, drainage density, elevation, land use land cover, Stream Power Index SPI and Topographic Wetness Index TWI were weighted using the AHP method to generate a five-class suitability map for small hydropower plants development. A major contribution of this study is the explicit integration of valley morphology into the conventional GIS–AHP workflow, which significantly improves the identification of hydropower favorable river segments. Results indicate that approximately 3% of the basin exhibits very high suitability, while 46% is moderately suitable for run-of-river small hydropower plants development. Model validation was performed by overlaying the suitability map with the locations of existing dams/hydropower facilities, showing that current facilities are mainly located in high-suitability zones. Separately, the workflow identified 13 newly proposed high-suitability candidate dam sites (P1–P13), selected from screened suitable dam points using narrow-valley detection criteria. By minimizing ecological disturbance and aligning with watershed-based management principles, the proposed GIS-supported multicriteria method provides a transferable and cost-effective decision-support tool for small-hydropower planning in rural and mountainous basins, offering practical contributions to sustainable resource management and the water–energy nexus.

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  AtıfScopus2·WoS2·OpenAlex4

  İncele
• MakaleAçık Erişim2025/r/munzur/5662
  Application of GIS in Flood Risk Analysis and Mitigation Strategies: The Case of Uluova and İkitepe Streams

  Korkmaz, Meral; Uymaz, Muhammed

  In recent years, the frequency and severity of floods have increased significantly due to the effects of global climate change, leading to serious economic and social losses, particularly in agricultural production areas. Floods not only damage cultivated lands but also negatively affect the livelihoods and socio-economic structures of local communities. This situation necessitates accurate identification of flood risk in agricultural areas and timely implementation of appropriate mitigation measures. In this study, flood risk was investigated in agricultural lands surrounding the Uluova Stream located between Doğankuş, Karşıbağ, and the Keban Dam and the İkitepe Stream, which flows through the center of Mollakendi in Elazığ Province, Türkiye. These areas are characterized by intensive agricultural activities. Using Geographic Information Systems (GIS), seven key parameters distance to streams, land use, aspect, slope, soil structure, precipitation, and geological features were analyzed, and corresponding thematic maps were generated. Flood risk levels were determined through spatial analysis and classification of these parameters using ArcGIS software. Based on the results, areas with high flood risk were identified, and both structural and non-structural mitigation measures were proposed for these zones. The findings offer valuable insights to support sustainable agricultural production and rural development by minimizing potential flood damages and reducing associated economic risks in the region.

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  İncele
• MakaleAçık Erişim2024/r/munzur/6253
  İklim Değişikliğinin Etkileri: Türkiye'de Yağış, Sıcaklık Anomalisi ve Su Kaynakları Üzerine Etkilerinin İncelenmesi

  Korkmaz, Meral

  İklim değişikliği, günlük yaşamımızı ve su kaynklarımızı önemli ölçüde etkileyen küresel bir sorundur. İklim değişikliği ile su kaynakları arasındaki karmaşık ilişkiyi anlamak, etkili önleme ve adapte stratejileri geliştirmek açısından hayati önem taşımaktadır. Bu çalışma, iklim değişikliğinin su kaynakları üzerindeki etkilerini araştırmayı ve bu konunun önemini vurgulamayı amaçlamaktadır. Su, sınırlı bir kaynaktır ve erişilebilirliği ile kalitesi insan refahı, tarım, enerji üretimi ve ekosistem sağlığı üzerinde doğrudan etki etmektedir. Ancak, iklim değişikliği yağış, sıcaklık ve buharlaşma desenlerini ve dinamiklerini değiştirerek suyun erişilebilirliği ve dağılımında önemli değişikliklere yol açmaktadır. Küresel sıcaklıkların artması, buzulların erimesine yol açarak tatlı su kaynaklarını sürekli olarak azaltmaktadır. Su kıtlığı daha yaygın hale geldikçe, sınırlı kaynaklar için rekabet artmakta ve potansiyel olarak çatışmalara ve sosyal huzursuzluğa yol açmaktadır. Su kaynaklarının önemi ve iklim değişikliğinin erişilebilirliği ile kalitesi üzerindeki kesin etkisi göz önüne alındığında, bu karmaşık ilişkiyi derinlemesine anlamamız kaçınılmazdır. Bu çalışma, iklim değişikliğinin su kaynakları üzerindeki sosyo-ekonomik ve çevresel etkilerini değerlendirmeyi amaçlamaktadır. Sonuç olarak, iklim değişikliğinin su kaynakları üzerindeki etkisi abartılamaz. Bu çalışma, Türkiye'de iklim değişikliğinin neden olduğu değişen yağış desenleri ve artan sıcaklıkların yeraltı ve yüzey su kaynakları üzerindeki etkilerini incelemektedir. Araştırma sonuçlarına göre, kış yağışlarında azalma ve sıcaklık artışı, özellikle Akdeniz ve Güneydoğu bölgelerinde kuraklık koşullarını şiddetlendirmektedir. Özellikle Akdeniz bölgesindeki göllerin uzun dönem uydu görüntüleri incelendiğinde ciddi anlamda azalma görülmektedir. Bu değişimler, yeraltı ve yüzey su kaynaklarının azalmasına ve su kıtlığı riskinin artmasına yol açmaktadır.

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  AtıfOpenAlex11·TR Dizin3

  İncele
• MakaleAçık Erişim2024Scopus SJRQ2/r/munzur/2279
  Regional Climate Change and Drought Dynamics in Tunceli, Turkey: Insights from Drought Indices

  Korkmaz, Meral; Kuriqi, Alban

  Global warming and climate change are causing temperatures to rise, which is having a negative impact on water resources. Climate change is a worldwide problem that affects and will continue to affect the frequency and intensity of natural disasters in many regions of the world. Tunceli region in Turkey, which until 10 years ago was known as an environmentally friendly city with abundant water resources and frequent rainfall, is experiencing a decrease in precipitation during the snowy winter season. This situation has made the investigation of climate change impacts an important issue in the region. Therefore, effective climate change adaptation strategies need to be developed. To determine these strategies, in this study, we assessed long-term drought conditions using multiple drought indices such as Standardized Precipitation Index (SPI), Reconnaissance Drought Index (RDI), Normal Precipitation Index (PNI), and Aridity Index (AI). The SPI and RDI analyses were performed in annual reference periods on a time scale of 3, 6, 9, and 12 months using temperature, precipitation, and evaporation data. Consequently, the SPI and RDI results were compared, and both indices show similar behavior in dry, wet, and normal seasons. Nevertheless, RDI shows less variation between different time scales, which is an advantage over SPI and is probably due to the inclusion of potential evapotranspiration in RDI. The variations in PNI between humid and dry sub-humid categorizations throughout the years, combined with the AI results, indicate that the Tunceli region predominantly experiences a climate ranging from dry sub-humid to semi-arid. This study could help decision-makers take effective measures to become more resilient to climate change in temperate climate regions and take important steps toward sustainable water resources management.

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  AtıfScopus17·WoS15·OpenAlex20

  İncele
• MakaleYalnız künye2022/r/munzur/4745
  APPLICATION OF RAINWATER HARVESTING TO MUNZUR UNIVERSITY CAMPUS AND EXAMINATION OF CONTRIBUTIONS

  Korkmaz, Meral

  The world is facing drought, and over time, water problems are becoming more serious. Agricultural land and green areas are gradually declining due to water scarcity. While the amount of available water is gradually decreasing, people's unnecessary use of water and water consumption are increasing. This, in turn, requires the accurate use of existing water resources and the realization of intelligent building systems as soon as possible. Despite this fact, none of the university's public buildings currently use systems such as the rainwater harvesting technique. The main aims of this research are to find effective results in terms of savings and to contribute to avoiding water shortages in the future. It is important today to immediately begin making future housing with these systems and to integrate these intelligent systems into public buildings, especially incorporating the latest technologies. In this study, the advantages of zero-energy built roofs and rainwater harvesting systems on the Munzur University campus are evaluated.

  AtıfWoS1

  İncele
• MakaleAçık Erişim2022Scopus SJRQ3/r/munzur/2549
  Local scour at a bridge abutment along a curved channel

  Korkmaz, Meral; Emin Emiroglu, M.

  Few studies have focused on abutments located on curved channels; previous studies have typically focused on straight channels. The present study experimentally examined the local scour that occurs around abutments of different lengths placed on inner and outer banks along a curved channel under clear-water scour flow conditions. The local scour around an abutment in a curved channel is a function of the upstream Froude number, flow intensity, the angle of the bend curvature and the ratios of abutment length to flow depth, abutment length to abutment width and abutment length to channel width. The maximum scour depth around the abutments placed on the outer bank was 1.45 times the scour depth on the inner bank. An empirical equation was developed containing all the dimensional parameters for equilibrium scour depth. The average percentage error of the proposed equation was 2%.

  AtıfScopus3·WoS3·OpenAlex2

  İncele
• MakaleYalnız künye2021/r/munzur/4874
  TREND ANALYSIS OF THE EFFECT OF RAIN ON SOLAR ENERGY PRODUCTION IN A SUSTAINABLE FUTURE

  Korkmaz, Meral

  The greatest need of the modern world is energy. From production to consumption, energy has become essential in all areas. As fossil-derived energy production systems cause global warming and climate change, interest in renewable energy sources is increasing. Despite the pandemic, solar production has shown promising growth throughout the world. Turkey has been encouraging investments in renewable energy sources, especially solar energy, for the last 10 years. Feasibility studies before the installation of solar power plants are crucial for investors. As a result of feasibility studies, the cost of the investment and the depreciation period can be calculated. In this study, feasibility studies of the 474 kWp power plant in Samsun province were carried out with PVsyst program. Significant differences were found between the software results and the actual results of the solar plant built in Samsun province. Production losses between actual data and numerical data are thought to be related to meteorological data. There are numerous studies in the literature about PV software. However. current studies have not examined the effect of meteorological data of the region on the difference in production between PV software results and solar power plant production values. In this study, the Sen method was used to determine the precipitation trend by taking meteorological data from Samsun province. With this method, rainfall in Samsun province was seen to be on an upward trajectory. For this reason, in regions where there is a lot of precipitation; feasibility studies of solar power plants are falling by approximately 9 percent.

  İncele
• MakaleYalnız künye2015/r/munzur/5531
  Doksan Derece Kıvrım Açısında Köprü Kenar Ayağı Etrafında Oluşan Oyulmanın İncelenmesi

  Korkmaz, Meral; Emiroglu, Muhammet Emin

  Köprüler ulaşım ağını hızlandırmak ve kolaylaştırmak için yapılan önemli yapılardır. Son yıllarda ağır hasargören veya yıkılan köprüler üzerinde yapılan çalışmalar, hasar nedenlerinin çoğunun taşkınlar sırasında meydanagelen oyulma olayından kaynaklandığını ortaya koymuştur. Taşkınlar esnasında köprü kenar veya orta ayaklarıetrafındaki taban malzemelerinin taşınması sonucu bu bölgede oyulmalar oluşmaktadır. Oyulma olayına, etkieden birçok parametrenin yanında, kıvrımlı kanallarda sekonder akım şiddetinin etkisi de önemli olmaktadır. Buçalışmada, kıvrımlı bir kanalda 90º kıvrım açısında dış kıyıya yerleştirilen farklı ayak uzunluğundaki köprüayakları etrafında oluşan yerel oyulmalar ve akım şiddetinin oyulma olayına etkisi temiz su oyulması durumuiçin deneysel olarak incelenmiştir. Köprü kenar ayağının uzunluğu oyulma derinliği üzerinde önemli bir etkiyesahiptir. Temiz su oyulması durumunda maksimum oyulma derinliği akım şiddetine bağlı olarak zamanlaartmakta ve belli bir süre sonra asimptotik olarak devam etmektedir.

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