K. Gorski, R. Machowski, M. Rzetala
Monday 5 August 2013 by Libadmin2013

References: 13th SGEM GeoConference on Water Resources. Forest, Marine And Ocean Ecosystems, www.sgem.org, SGEM2013 Conference Proceedings, ISBN 978-619-7105-02-5 / ISSN 1314-2704, June 16-22, 2013, 181 - 188 pp


The aim of the study was to evaluate ice phenomena in four anthropogenic water bodies
situated in the south-eastern part of Gliwice during the 2010–2011 winter season. The
study consisted of systematic measurements that were carried out daily during freezing
and thawing and every two or three days after the ice cover had formed. The first ice
phenomena in the water bodies analysed in the form of a thin layer of ice in the coastal
zone appeared on 26 November 2010. The destruction of the compact ice cover began
with the onset of positive temperatures in March. The rate of its disappearance varied,
and the last ice phenomena in the water bodies analysed were observed on 17 March
2011. The duration of ice phenomena in these water bodies was similar. The longest
duration (110 days) was observed in the Cegielnia water body, while the shortest one
(107 days) in the Żwirownia one. The maximum thickness of the ice cover exhibited
slightly greater variation (19.0 cm – 21.5 cm). The observations conducted make it
possible to claim that the ice regime in the water bodies studied is quasi-natural and
individual phases of the seasonal freezing cycle result from local, mostly natural
conditions. The existing differences related to the freezing and thawing of the water
surface stemmed mainly from morphometric differences between the limnic water
bodies studied.

Keywords: ice phenomena, ice cover, lake, water body, Silesian Upland