Author(s): Hans-Petter Fjeldstad; Oddbjorn Bruland; Knut Alfredsen
Linked Author(s): Knut Alfredsen, Hans-Petter Fjeldstad, Oddbjorn Bruland
Keywords: No Keywords
Abstract: In order to predict effects of expected climatic change on fish in rivers we need better knowledge about ice. In this project the conditions and processes creating frazil ice and anchor ice will be extensively studied through observations and a modeling program. Two study sites are chosen in the River Orkla, Mid-Norway. Digital time lapse video recording is used to detect both surface ice, frazil ice and hopefully anchor ice at a suitable spot in the river. Discharge and temperature recordings with high accuracy and climatic observations at the riverbank together with the video will monitor the conditions at which the ice creation processes start and evolve. To assess causes of climatic change on ice processes and fish habitat we will use calculated climatic data from the Norwegian RegClim project. These will be used to generate predicted discharge and temperature time series for the study sites. The instrumentation was tested during the spring 2002 and some experiences and preliminary results are presented in this paper.
Year: 2002