Faculty of Natural Sciences and Mathematics
Permanent URI for this communityhttps://repository.ukim.mk/handle/20.500.12188/16
Browse
5 results
Search Results
- Some of the metrics are blocked by yourconsent settings
Item type:Publication, GIS In The Hydromorphology Analysis of Selected Meanders of The River Vardar(2025-06-26); ; This paper aims to determine the hydromorphological changes of selected meander sectors of the largest river in the Republic of North Macedonia, the Vardar River using GIS. The meandering process is a significant dynamic in the hydrological studies of river systems. Covering a period of 59 years (1964-2023), in the study of the meandering process of selected three meander sectors in river Vardar, topographic maps with a scale of 1:50000, geological maps with a scale of 1:100000 and satellite images from the Landsat mission (1983-2013) and the Sentinel-2 mission (2018-2023) were used, which resulted in their processing and analysis. The planimetric characteristics that were analyzed for meandering are the width of the river channel, sinusoidality, radius of curvature, width of the meander section, slope and migration of the riverbed. In the period between 1964 and 2023, all three meander sectors have experienced significant changes in all parameters, with large changes in the width and length of the meander sectors, accompanied with significant lateral erosion on both coastal sides consistently. The hydromorphological changes that have occurred also differ in the different time periods of action, where each period is characterized by certain spatial changes. Understanding the hydromorphological changes in the meandering process has a significant role in predicting future changes in the flow of the riverbed in order to reduce and possibly prevent future potential impacts on the space. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Investigating relationships between PM10 and Climatic parameters using PCA in the three largest urban areas in North Macedonia(2025-06-26); ; ; Kuzmanoski, ArseThis study applies Principal Component Analysis (PCA) to evaluate how meteorological factors influence PM10 pollution in Skopje, Kumanovo and Bitola from 2012 to 2020. PCA reduces data complexity while identifying key weather variables that impact air pollution levels. Findings indicate that temperature and wind speed have the strongest negative correlation with PM10 concentrations, meaning lower temperatures and weaker winds are linked to higher pollution levels. These conditions limit pollutant dispersion, leading to worse air quality. Humidity and precipitation have mixed effects—humidity can promote both the removal and formation of pollutants, while precipitation aids in PM10 reduction through wet season, depending on intensity and duration. The extracted principal components explain a significant portion of pollution variability, highlighting the dominant meteorological influences on air quality trends. By clarifying these relationships, PCA enhances the understanding of air pollution dynamics in the three largest urban areas in North Macedonia. This analysis provides valuable insights for air quality management in North Macedonia. By identifying the key meteorological drivers of pollution, policymakers can develop more targeted and effective strategies to mitigate PM10 levels and improve public health. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, GIS In the hydromorphology analysis of selected meanders of the Crna reka(University of Sarajevo, Faculty of Science, 2024-12); ; Manevska, Emilija<jats:p>Hydromorphological changes in river systems, particularly in the context of meanders, are crucial for understanding the dynamics of fluvial environments. Meandering is a natural process in lowland areas where rivers form curved, sinusoidal flows driven by the complex interaction of hydraulic forces, sediment transport and bank erosion. These changes alter the physical morphology of rivers, influencing water quality and flood risks. The meandering process of the Crna Reka can be accessed through the processing and analysis of topographic maps and satellite imagery from the Landsat mission (1983–2013) and Sentinel-2 mission (2018–2023). Parameters analyzed include river channel width, the central flow line within a given sector, the sinuosity of the river channel, the radius of curvature of river bends, the length of meandering belts, the width of meandering channels, and riverbed migrations. Between 1964 and 2023, an increase in the sinuosity coefficient, a rise in the number of bends from 10 to 23, changes in the radius of curvature from 271 m to 577 m, and alterations in the length and width of meandering were observed. Significant lateral erosion on the right bank and dominant sedimentation on the left bank were also evident. Understanding these processes is crucial for predicting future river flow changes and mitigating potential environmental impacts.</jats:p> - Some of the metrics are blocked by yourconsent settings
Item type:Publication, ANTHROPOGENIC PRESSURES ON AIR QUALITY IN THE SKOPJE AGGLOMERATION(Macedonian Geographical Society, 2025-02-01); ; ; Kuzmanoski, ArseAir pollution in the Skopje agglomeration represents a decades-long, complex problem, which requires a profound approach. The expansion of the urban space, which has been especially intensified in the last decade, as well as other socio-economic factors in the capital, have led to an additional serious threat to the health of the population through air pollution. This paper aims to analyze the socio-economic characteristics of the Skopje agglomeration, which exert a great pressure on the environment, and are reflected with the greatest consequences on the air quality in the agglomeration. The location for the research was determined due to the fact that the largest population of residents from the Republic of North Macedonia is concentrated in the Skopje agglomeration and it has high concentrations of air pollutants from all types of pollution sources and pollutants, where the concentration of the population and industrial facilities cause a threat to the quality of the basic components of the environment. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Meteorological Parameters versus PM10: StatisticalAnalysis of the City of Skopje, Republic of NorthMacedonia Using Multiple Linear Regression(HARD Publishing Company, 2025-06-18); ; ; Kuzmanoski, Arse