00000nam 2200000zi 4500 9.904573 CaOODSP 20241127082707 m o d f cr |n||||||||| 211102e198112##oncdba ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-on En36-539/56-1981E-PDF Beltaos, S., 1944- author. Ice freeze up and breakup in the Lower Thames River : 1979-80 observations / by S. Beltaos. [Burlington, Ont.] : Environment Canada, Canada Centre for Inland Waters, National Water Research Institute = Environnement Canada, Centre canadien des eaux interieures, Institut national de recherche sur les eaux, December 1981. 1 online resource (iv, 34 pages, 35 unnumbered pages) : charts, maps, illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier [Unpublished manuscript] Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 28-29). "The first year's ice observations on the lower Thames River are described and partially interpreted. Freeze up commenced in early January and breakup was complete by March 20, 1980. Though the 1980 ice season was not associated with flooding, several interesting events were documented, i.e. freeze up jams, initiation of breakup, breakup jams. In the upper portion of the study reach, breakup progressed in the downstream direction but the ice cover through and below Chatham moved out before arrival of the upstream ice run. Significant spring jams formed at five locations, including two bridge sites and the river mouth. Analysis of the observations indicated that there is merit in using the water stage as an index to forecast initiation of breakup; and that the present data support the existing theory of floating equilibrium jams"--Abstract. Includes abstracts in French. Ice on rivers, lakes, etc. Ontario Thames River. Glace sur les cours d'eau, lacs, etc. Ontario Thames, Rivière. Thames River (Ont.) Thames, Rivière (Ont.) National Water Research Institute (Canada), issuing body. Canada Centre for Inland Waters, issuing body. Unpublished manuscript (National Water Research Institute (Canada)) (CaOODSP)9.901451 PDF 3.37 MB https://publications.gc.ca/collections/collection_2021/eccc/en36-539/En36-539-56-1981-eng.pdf