00000nam 2200000zi 4500 9.874364 CaOODSP 20241203113649 m o d f cr bn||||||||| 190606s1995 onca ob f000 0 eng d CaOODSP eng rda CaOODSP En13-5/95-09E-PDF Helsten, M. A., author. Modelling the effect of vertical flow-developer on ice cover / by M. Helsten, P. Hamblin, R. Baddour. [Ottawa] : Environment Canada, Water Science and Technology Directorate = Environnement canada, Direction générale des sciences et de la technologie, eau, [1995] 1 online resource (1 unnumbered page, 4 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 95-09 Cover title. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "Severe oxygen depletion causing massive fish kills in lakes and reservoirs occurs when ice cover prevents the replenishment of stored dissolved oxygen which has been depleted by biological demand and reduced oxygen production in the winter. Water quality of ice-covered, eutrophic lakes, can be improved by creating ice openings through which water could be aerated. A flow-developer creates an ice opening, or polynya, by circulating warmer water from the bottom of the lake. This study examines the performance of a submerged flow-developer which pumps water from a lake bottom vertically onto the ice cover"--Abstract, page 1. gccst Lakes gccst Ice gccst Models Hamblin, P. F., author. Baddour, Ralph E., 1976- author. Canada. Environment Canada. Canada. Water Science and Technology Directorate. National Water Research Institute (Canada). Aquatic Ecosystem Restoration Branch. University of Western Ontario. Dept. of Civil and Environmental Engineering‏. NWRI contribution ; 95-09. (CaOODSP)9.844121 PDF 886 KB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-95-09-eng.pdf