Author(s): A. Dobrowolski; B. Glowacka; A. Kondzielski
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Keywords: No Keywords
Abstract: The slush ice (mainly frazil ice) formation and transportation in the Middle Vistula River has been considered. The Middle Vistula River shows complex eombinations of various morphological elements. On braiding river reaches with many bed forms (e. g. Pulawy Region) the turbulen, mixing and water overcooling has gone up. These two phenomena have caused intensive slush ice formation. Aircraft video imagery has shown river morphology effect on slush ice transport condition and ice cover formation on regulated as well as wuegulated reaches, and in Wloclawek reservoir backwater. Heated water discharges have caused slush ice transport condition changes and have formed ice phenomena free zones. For example, during winter time, heated water discharge from Kozienice Power Station to Vistula River has activated the side channel near Pilica tributary. This has caused morphological processes changes in Vistula River, Critical value of water stream slush ice saturation has been observed. Over this value ice formation has caused border ice mass increase due to slush ice settling. This phenomenon has been recorded using video camera and confirmed by intensity of slush transport measurements in Vistula River cross·sections near Warsaw and Zakroczym.
Year: 2000