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The floor of the Arctic Ocean : geographic names   /   Beal, M.A.   Edvalson, F.   Hunkins, K.   Molloy, A.   Ostenso, N.
Arctic, v. 19, no. 3, Sept. 1966, p. 214-219, figures, table
ASTIS record 9991
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A table listing 54 major features of the ocean floor in the Arctic, gives the final suggested name, approx location, and the status of the name with the US Board on Geographic Names and the Intl. Hydrographic Bureau. Recommendations are based on decisions made at a meeting called by the US Navy Electronics Laboratory, San Diego, Calif, Jan 1966. The criteria for decisions were: consistency with Undersea terms and definitions (US Board on Geographic Names, 1964) and Limits of oceans and seas (Intl Hydrographic Bureau 1953), common usage, priority of discovery or naming, association with established geographic features, and minimizing ambiguity. It is suggested that a straight line across the narrowest constriction of Bering Strait should mark the southern boundary of Chukchi Sea, rather than the Arctic Circle, as recommended by the I.H.B., and that, in the absence of any hydrographic or physiographic features designating a unique region, the name Beaufort Sea should be dropped. The opinions ar those of the writers personally.


Phytoecological study of sylvotundra at Small Tree Lake, N.W.T.   /   Maini, J.S.
Arctic, v. 19, no. 3, Sept. 1966, p. 220-243, ill., figures, map, tables
ASTIS record 9992
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Attempts to make a quantitative evaluation of representative plant communities in relation to physiographic features in the central part of North American sylvotundra (the ecotone between treeless tundra and the taiga). Lake shores and hill-bottoms support closed canopy Picea mariana forest, but the exposed slopes are treeless. A Picea glauca parkland forms a transition between forests and treeless slopes. Analysis of the vegetation by strata, viz: ground cover, low herbs and decumbent shrubs, and tall herbs, tall shrubs and arboreal seedlings, showed decrease of cover as level above ground increased. Along a gradient from forests to treeless shapes, the percentage of boreal plants decreased and that of the arctic plants increased. The present forest-tundra boundaries at Small Tree Lake appear semi-permanent.

Étude phytoécologique de la toundra forestière à Small Tree Lake, T. du N.-O. Dans l'aire d'étude, les caractères du terrain et les conditions de micro-environnement qui en découlent déterminent divers types de végétation. Les rives du lac e le pied des collines supportent une forêt de Picea mariana à voûte fermée, mais les pentes exposées sont dépourvues d'arbres. Une savane boisée de Picea glauca forme la transition entre les forêts et les pentes. La grande dimension des arbres de la savane, l'absence d'une zone de krumholz et une abrupte limite des arbres liée à la topographie indiquent que l'équilibre entre les types de végétation de cette toundra forestière est délicat. Les frontières actuelles entre la forêt et la toundra à Small Tree Lake semblent semi-permanentes. L'analyse de la stratification a démontré que, pour chaque strate, la couverture diminuait selon l'éloignement au-dessus du sol. Le pourcentage des plantes boréales diminuait et celui des plantes arctiques augmentait selon un gradient entre les forêts et les pentes.


The drift of Ice Island WH-5   /   Nutt, D.C.
Arctic, v. 19, no. 3, Sept. 1966, p. 244-262, ill.
ASTIS record 9993
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Summarizes the final documentation of this drift from its calving from Ward Hunt Ice Shelf, North Ellesmere Island, winter 1961-62 until sightings of the remaining fragments in waters of Labrador and Newfoundland, summer 1964. The drift south from the Arctic Ocean indicates that the southward water transport through Nares Strait is discontinuous and, during summer 1963, was interrupted by pulses of surface water to the north and the development of a sluggish counterclockwise gyre in Kane Basin. By 1964, pieces of WH-5 were widely scattered by their irregular escape from Smith Sound and the vagaries of the Baffin and Labrador current systems.

La Dérive de l'île de glace WH-5. De 1962 à 1964, l'île de glace WH-5 a dérivé vers le sud, de l'océan Arctique à travers le détroit de Nares et la baie de Baffin. Les mouvements de WH-5 indiquent que le transport d'eau vers le sud à travers le détroit de Nares n'est pas continu et que durant l'été de 1963, il fut interrompu par des poussées d'eau de surface vers le nord et le développement d'un lent mouvement lévogyre dans le bassin de Kane. Lorsqu'ils atteignirent les eaux du Labrador et de Terre-Neuve en 1964, les débris de WH-5 avaient été considérablement dispersés par leur sortie irrégulière du détroit de Smith et les caprices des systèmes de courants de Baffin et du Labrador.


Postglacial isostatic movement in northeastern Devon Island, Canadian Arctic Archipelago   /   Muller, F.   Barr, W.
Arctic, v. 19, no. 3, Sept. 1966, p. 263-169, ill.
ASTIS record 9994
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The limit of marine submergence of the last glaciation in the Cape Sparbo region varied in elevation from 65 m at Base Camp lowland, 73 m in Sparbo-Hardy lowland, to 82 m in the Skogn area; these variations are in part due to differences in time of deglaciation. Radiocarbon dates of marine shells indicate that the region was clear of ice by 15,500 yr BP; that the most rapid isostatic uplift occurred 9000-8000 yr BP and that the total rebound was about 110 m. The oldest dates, 15,000 and 13,000 BP, if correct, indicate the slow onset of isostatic uplift.

Isostasie postglaciaire dans le nord-est de l'île Devon, Archipel Arctique canadien. Les auteurs ont étudié la morphologie isostatique des basses terres au voisinage du cap Sparbo. Les datations par le carbone-14 de coquillages marins indiquent que la région était libre de glace des 15,500 av. p. et que le relèvement le plus rapide (approx. 6.5 m. par siècle) s'est produit entre le neuvième et le huitième millénaire av. p. Le rebondissement isostatique total a été d'environ 110 m. Les deux datations les plus anciennes (15,000 et 13,000 av. p.), si elles sont justes, sont une rare preuve de la lenteur du relèvement à son début.


Geological studies in Somerset Island, University of Ottawa expedition 1965   /   Dineley, D.L.
Arctic, v. 19, no. 3, Sept. 1966, p. 270-277, figure
ASTIS record 9995
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The 1965 field program, in continuation of a study of the Boothia Uplift, investigated the structure of the Precambrian metamorphic basement, the stratigraphy, sedimentology and paleontology of the Aston and Hunting formations (Proterozoic), the Paleozoic rocks and Cretaceous-Tertiary strata around Aston Bay and Limestone Island, Stanwell-Fletcher Lake, and Creswell Bay, Devon Island. Study of Recent sedimentation, local Pleistocene features and seismic refraction measurements of the Stanwell-Fletcher Lake and area are also noted.

Études géologiques à l'île Somerset, expédition de l'université d'Ottawa, 1965. Les études géologiques effectuées autour de la baie Aston et de l'île Limestone, du lac Stanwell-Fletcher et de la baie Creswell, à l'île Somerset, ont porté sur la structure du soubassement précambrien, la stratigraphie, la sédimentologie et la paléontologie des formations d'Aston et de Hunting, les roches paléozoïques et les strates plus récentes au nord du lac Stanwell-Fletcher. On a étudié aussi la sédimentologie récente du lac et les traits du Quaternaire local.


Francis Austin Cook (1918-1966)   /   Fraser, J.K.
Arctic, v. 19, no. 3, Sept. 1966, p. 284
ASTIS record 55198
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Frank Cook, geographer and a Fellow of the Arctic Institute, died in Ottawa in March. A native of Kamloops, B.C., he served in the Canadian Army from 1941 to 1948, and earned with distinction his geography degrees from the University of British Columbia in 1952 and the University of Wisconsin in 1953. Accepted as a doctoral candidate at McGill in 1954, ill health prevented completion of his residence requirements. He taught briefly at United College in Winnipeg before joining the staff of the Geographical Branch in 1957. His previous research activities included several summers with the Geographical Branch as well as a year with the Meteorological Service at Resolute, N.W.T. His scientific contributions were mainly in periglacial geomorphology and he published several significant papers in this field in Arctic and other journals. He was firmly convinced of the importance of assembling and making available annotated bibliographies. His detailed field investigations at Resolute resulted in several important papers, including those on the relationship of soil temperatures to the formation of patterned ground, a critique of the role of freeze-thaw cycles in mechanical disintegration of rock material, and on the significance of unrecorded precipitation in the climatic regime in the Arctic. He collaborated with Professor L. E. Hamelin of Laval University in the preparation of a monograph on periglacial phenomena which is expected to appear in the near future. When increasing poor health forced him to give up field work, he became more involved in technical editing, reviewing, and contributing to the abstract journals. Besides his contributions to the development of the Geographical Bulletin, he initiated the application of data processing techniques in the Geographical Branch. It is most unfortunate that his deteriorating health kept Frank Cook from realizing his full potential as a painstaking and original researcher. Nevertheless, his broad reading in periglacial geomorphology and his concern with analysis based on quantitative measurements were always appreciated by his colleagues, to whose research he contributed by thoughtful suggestions and encouragement. His appointment to the Canadian Committee of the Periglacial Commission of the International Geographical Union illustrates his recognized authority in this field. His death at the age of 47 deprives the profession of a competent research worker and his colleagues of a valued friend.


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