00000nam 2200000zi 4500 9.883528 CaOODSP 20221107170611 m o d f cr bn||||||||| 200114s1962 oncab ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-ab n-cn-mb n-cn-sn x1x5 M67/35E-PDF MacKay, Donald Kenneth, 1894- author. Trends and factors affecting break-up and freeze-up dates in the Nelson River drainage system / D.K. MacKay. Ottawa : Geographical Branch, Department of Mines and Technical Surveys, [1962] 1 online resource (23 pages, 15 unnumbered pages) : illustrations, map. text txt rdacontent computer c rdamedia online resource cr rdacarrier Geographical paper ; no. 35 Digitized edition from print [produced by Environment and Climate Change Canada]. Some pages rotated in this copy. Back cover is wanting in this copy. Includes bibliographical references. "The Canadian Ice Distribution Survey of the Geographical Branch has been collecting data on conditions of sea, lake and river ice for over a decade. In addition, the Branch has developed a program on glaciology during this period. The areal variability and rate of progress of river ice formation and disintegration in the Nelson drainage system were discussed in Geographical Paper No. 34. This paper complements the previous study, considering trends and factors affecting river ice condition dates in the same area"--Preface. Issued also in print format. Ice on rivers, lakes, etc. Manitoba Nelson River Watershed. Ice on rivers, lakes, etc. Prairie Provinces. Glace sur les cours d'eau, lacs, etc. Manitoba Nelson, Bassin du. Glace sur les cours d'eau, lacs, etc. Provinces des Prairies. Canada. Department of Mines and Technical Surveys. Canada. Geographical Branch. Geographical paper (Canada. Geographical Branch) no. 35. (CaOODSP)9.882106 PDF 1.12 MB https://publications.gc.ca/collections/collection_2020/eccc/m67/M67-35-eng.pdf