Journal
WATER
Volume 15, Issue 22, Pages -Publisher
MDPI
DOI: 10.3390/w15223925
Keywords
ice phenomena; ice cover; ice; cryology; statistical analysis; statistical methods; centroid class principal component analysis method; water bodies; Silesian Upland
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Ice phenomena in water bodies are important indicators of natural changes and economic use of water bodies. This study collected data from 39 water bodies in southern Poland and used advanced statistical methods, including centroid class principal component analysis, to classify the water bodies based on their ice regimes.
Ice phenomena occurring in water bodies are an important indicator of natural changes (e.g., climate change) and the possibilities for economic use of water bodies (e.g., using the ice cover); hence, there is a need to adopt new advanced statistical methods for the purpose of their analysis and assessment. Material for this study was collected for three winter seasons in 39 water bodies in the Silesian Upland (southern Poland). Nine variables were used in the analysis, of which three pertained to the features of the water bodies studied (surface area, mean depth, the amount of water retained), and six pertained patterns to of ice phenomena (average near-surface water temperature during ice phenomena, average and maximum ice thickness, the number of days with ice phenomena, the number of days with ice cover, and average thickness of the snow accumulated on ice). The centroid class principal component analysis (CCPCA) method was found to be the most precise of the five methods used in the study for classifying water bodies in terms of their ice regimes. It enabled the most accurate division of the group of water bodies covered by the study in terms of their ice regimes in conjunction with their morphometric features and hydrological types. The presented method of classifying water bodies using advanced statistical methods is an original proposal, which was used for the first time in limnological research and in the analysis of ice phenomena.
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