Badania Fizjograficzne, Seria A, Tom 68, 2017
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Browsing Badania Fizjograficzne, Seria A, Tom 68, 2017 by Author "Jawgiel, Kamil"
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Item Wpływ zmian powierzchni zieleni miejskiej w Poznaniu na parametr CN metody SCS i współczynnik spływu powierzchniowego(Wydawnictwo Poznańskiego Towarzystwa Przyjaciół Nauk, 2017) Jawgiel, Kamil; Łukaszewicz, JanLand use changes are important in water circulation. Already at the stage of water supply to basin precipitation it’s modified into effective precipitation and then filters into the substrate or runs off the surface of the area. Identifying the significance of these changes is key in setting the limits for urbanization in terms of water management and flood protection. The most commonly used method for calculating the precipitation effect that causes outflow is the SCS method. The underlying assumption of this method is the dependence of effective precipitation on the type of land cover, soil and soil moisture. This article presents the application of this method in the context of the study of surface runoff in an urbanized area, where changes in land use during the last century have influenced the runoff.Item Zmienność częstości i charakteru przebiegu zjawisk lodowych na rzece Parsęcie w aspekcie zmian klimatycznych(Wydawnictwo Poznańskiego Towarzystwa Przyjaciół Nauk, 2017) Łukaszewicz, Jan; Jawgiel, KamilThe article presents the frequency, occurrence and variability of ice phenomena on the Parsęta River from 1951–2010. The variability of the course and nature of the ice phenomena has been described against the background of the changing climate, with particular emphasis on the variability of the air temperature and the thermodynamics of winter periods. In order to better visualize the variability of the thermals of the individual winter seasons, climatic classification of the individual periods was carried out and the anomalies were determined on the basis of it. The work also includes the course of atmospheric circulation, which determines the course of the air temperature on the river basin. For this purpose, the Jones index has been used, which is calculated to represent the North Atlantic Oscillation (NAO). Based on the research, the shortest and longest periods of ice phenomena have been distinguished and their formation has been determined, depending on the variability of air temperature and water. The division of the ice phenomena into individual types and forms is also included in this article.