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Batymetria jezior meteorytowych w rezerwacie „Meteoryt Morasko”

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Choiński A., Ptak M.
Acta Societatis Metheoriticae Polonorum
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2017
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vol. 8
23-29
EN
The paper presents results of bathymetric measurements performed on three crater lakes located in the “Meteoryt Morasko” reserve in west Poland. The maximum depth of the largest of the analysed lakes (1695 m2) was determined to amount to 2.6 m. The parameters of the lake (surface area, depth, etc.) are largely determined by a ditch dug through the crater in the north-western part of the lake, affecting the maximum water volume accumulated in the lake.
2
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ZMIANY BATYMETRII JEZIORA MIERZYŃSKIEGO

100%
Choiński A., Ptak M.
Badania Fizjograficzne Seria A - Geografia Fizyczna
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2018
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issue 9(69)
25-33
EN
The paper presents an analysis of changes in the bathymetry of Mierzyńskie lake, located in western Poland. It was found that over the last five decades this lake was characterized by exceptional stability in terms of changes in the surface area and volume of water, which decreased by 3.4 ha and 315,000 m3 respectively. The observed situation is quite different in comparison to the literature analysing the issue of lake evolution in Poland (indicating a faster rate of their disappearance). This specificity is due to the nature of the use of the catchment of this lake, which is characterised by an exceptionally high percentage of forest areas (considered to be the most natural) and negligible anthropopressure.
3
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OBIEKTY KRENOLOGICZNE W D OLNEJ CZĘŚCI DORZECZA WISŁY (PO ZLEWNIĘ DRWĘCY)

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Choiński A., Ptak M.
Badania Fizjograficzne Seria A - Geografia Fizyczna
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2018
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issue 9(69)
17-24
EN
On the basis of hydrographic maps in the scale 1:50,000, an inventory of crenological objects in the lower part of the Vistula basin up to the Drwęca river basin in the south was made. The total number of these objects in the analyzed area is 308, with the highest number of solid sources – 161, followed by leakages – 125 and periodic sources – 17. The total efficiency of all outflows is very low, as it was estimated at 0.075 m3∙s–1. The most efficient source reaches only 1.0 dm3∙s–1, and only a few 0.7 dm3∙s–1.
PL
On the basis of hydrographic maps in the scale 1:50,000, an inventory of crenological objects in the lower part of the Vistula basin up to the Drwęca river basin in the south was made. The total number of theseobjects in the analyzed area is 308, with the highest number of solid sources – 161, followed by leakages – 125 and periodic sources – 17. The total efficiency of all outflows is very low, as it was estimated at 0.075 m3∙s–1. The most efficient source reaches only 1.0 dm3∙s–1, and only a few 0.7 dm3∙s–1.
4
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ZMIANY PARAMETRÓW MORFOMETRYCZNYCH JEZIORA STRZESZYŃSKIEGO

100%
Choiński A., Każmierska A.
Badania Fizjograficzne Seria A - Geografia Fizyczna
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2018
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issue 9(69)
9-16
EN
The paper analyses the changes in the Strzeszyńskie lake basin, located within the borders of the city of Poznań. The study was based on five topographic maps from the years: Moreover, the morphometric parameters of the basins from 1908, 1992 and 2013 were compared. Although the lake is located only a few kilometers from the center of Poznan, its basin has not changed significantly. Undoubtedly, this is influenced by the development of the lake basin. At present, however, there are symptoms indicating the worsening state of the waters.
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