00000nam 2200000zi 4500 9.871635 CaOODSP 20241203113648 m o d f cr ||||||||||| 190415t19811981qucab o f00| 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn-nu En36-511/19E-PDF Arnold, K. C. (Keith Charles) author. Ice ablation measured by stakes and terrestrial photogrammetry : a comparison on the lower part of the White Glacier, Axel Heiberg Island, Canadian Arctic Archipelago / K.C. Arnold. Montreal : Centre for Northern Studies and Research, McGill University, 1981. ©1981 1 online resource (vi, 98 pages, 3 unnumbered pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier NHRI paper ; no. 19 Axel Heiberg Island Research Reports, Glaciology ; no. 2 Digitized edition from print [produced by Environment and Climate Change Canada]. "December 1981." "This research has been sponsored by the National Research Council of Canada ... and by the National Hydrology Research Institute, Environment Canada." Includes bibliographical references. "On the lower part of the ablation area of the White Glacier standard terrestrial photogrammetric techniques were used to measure the height difference of the glacier surface (21 June 1969 to 5 August 1969, and 5 August 1969 to 4 August 1970) at 689 points spaced on a 50 m grid, covering an area of 1.7 km2. Twenty-two ablation stakes served as control. Photogrammetry is not necessarily considered a method of replacing stakes for measuring specific ice ablation, because a glacier's specific vertical velocity components, necessary for deducing ablation from height changes, can only be measured by stakes anchored in the ice"--Abstract. Includes abstract in French. gccst Glaciers Canada. Environment Canada. National Hydrology Research Institute (Canada) McGill University. Centre for Northern Studies and Research‏. NHRI paper ; no. 19 (CaOODSP)9.871582 PDF 13.40 MB https://publications.gc.ca/collections/collection_2019/eccc/En36-511-19-eng.pdf