00000nam 2200000za 4500 9.862030 CaOODSP 20221107160917 cr ||||||||||| 180917s1970 onca o f000 0 eng d CaOODSP eng n-cn--- En36-515/29E-PDF Strilaeff, P. W. Measurement of discharge under ice cover [electronic resource] / P.W. Strilaeff and J.H. Wedel. Ottawa : Inland Waters Branch, Dept. of Energy, Mines and Resources, 1970. v, 14 p. : ill. Technical bulletin ; no. 29 Digitized edition from print [produced by Environment and Climate Change Canada]. "Many difficulties are encountered in the measurement of discharge under ice cover, particularly in the operation of hydrologic data-gathering networks located in Arctic and Sub-Arctic regions. Difficulties result from extreme ice thicknesses, double thicknesses of ice, large depths of slush ice, coincidence of spring flows with ice breakup, freeze-up of gauging equipment in sub-zero temperatures, etc. Some of these difficulties are discussed, and procedures used in the operation of networks in northern areas of Canada are outlined. A possible technique for the estimation of river discharge using a single velocity in a cross-section is briefly described, and a comparison of accuracy between discharges derived using this technique and measured discharges using standard methods is demonstrated"--Abstract, p. v. Stream measurements Ice on rivers, lakes, etc. Northern Canada Wedel, J. H. Canada. Inland Waters Branch. Canada. Environment and Climate Change Canada. Technical bulletin (Canada. Inland Waters Branch) no. 29. (CaOODSP)9.861115 PDF 1.21 MB https://publications.gc.ca/collections/collection_2018/eccc/En36-515-29-eng.pdf