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    Item type:Publication,
    Comparison of methods for macroseismic mapping: A case study of the 2016 Debarca-Plakenska earthquake
    (University of Kragujevac, University Library, Serbia, 2025-09)
    Andreeska, Monika
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    Drogreshka, Katerina
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    Najdovska, Jasmina
    The isoseismal map can directly reflect the damage degree of an earthquake, and it is an image representation of a seismic influence field or ground motion intensity field. This paper presents a comparative analysis of three methods used for generating macroseismic maps: manual isoseismal drawing, geostatistical interpolation method kriging and deterministic interpolation method natural neighbor. The objective is to test whether more automated methods can support the process of macroseismic mapping and reduce the subjectivity involved in manually drawn isoseismal lines. The analysis is based on data collected from earthquake that occurred on May 21, 2016, in the epicentral area Debarca-Plakenska, in the Republic of North Macedonia. A total of 82 intensity points, based on the European Macroseismic Scale, were supplemented with 17 additional intensity II points to ensure adequate closure of the macroseismic field and enhanced interpolation accuracy. The findings underscore the importance of selecting interpolation methods based on data characteristics. This research highlights the importance of properly collecting complete macroseismic data. Through the calculation examples, the best choice for this case study is the kriging interpolation method, which can be used to directly build a macroseismic field through intensity points.
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    GIS In The Hydromorphology Analysis of Selected Meanders of The River Vardar
    (2025-06-26)
    Kuzmanoski, Arse
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    Radevski, Iran
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    ;
    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.