00000nam 2200000zi 4500 9.879266 CaOODSP 20241203113652 m o d f cr ||||||||||| 190913t19801980oncbdo #ob f000 0 eng d 0662109856 CaOODSP eng rda CaOODSP eng fre n-cn-bc En36-508/66E-PDF En36-508/66E Reid, I. A., author. Glacier surveys in British Columbia - 1978 / I.A. Reid and J.O.G. Charbonneau. Ottawa, Canada : Inland Waters Directorate, Water Resources Branch, 1980. ©1980 1 online resource (vii, 23 pages, 5 unnumbered pages) : maps, graphs, photographs. text txt rdacontent computer c rdamedia online resource cr rdacarrier Report series ; no. 66 Issued also in French under title: Levés de glaciers en Colombie-Britannique, 1978. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (page 23). "Glaciers act as natural regulators, storing water in winter and releasing it in summer. To gain some understanding of this phenomenon and the contribution which glaciers make to streamflow, the predecessors of the Water Survey of Canada began glacier surveys in 1945. The earlier surveys offered some clue to the role of the glacier, but the data collected were not sufficient to provide the overall picture. Following adoption of photogrammetric survey techniques, however, the glacier surveys have evolved to the extent that it is now feasible to produce a series of maps from which the linear, areal, directional and volumetric changes can be determined. The surveys have revealed that the glaciers, in general, are becoming smaller in size; hence the regulating effect on streamflow is diminishing"--Abstract, page vii. Includes abstract in French. gccst Glaciers gccst Surveying gccst Measurement Charbonneau, J. O. G., author. Canada. Environment Canada. Canada. Inland Waters Directorate. Canada. Water Resources Branch. Levés de glaciers en Colombie-Britannique, 1978 / (CaOODSP)9.876930 Report series (Canada. Inland Waters Directorate) no. 66. (CaOODSP)9.862410 PDF 2.83 MB https://publications.gc.ca/collections/collection_2019/eccc/en36-508/En36-508-66-eng.pdf