Twentieth anniversary of Expéditions Polaires Françaises (missions Paul-Emile Victor)
Arctic, v. 21, no. 2, June 1968, p. 58-66, ill.
ASTIS record 10032
Summarizes the activities of the EPF, founded by decision of the French Cabinet 27 Feb 1947 to carry out research in the earth and life sciences in polar regions. On its first expeditions, to Greenland in May and to Adelie Land, Antarctica in Nov 1948, the EPF introduced new techniques with motorized tractor convoys, air transport, parachutes and materials now in common use. EPF studies of the Greenland inland ice 1948-53 became international in collaboration with American Armed Forces 1952-58. In 1956 EPF assumed the technical and logistics organization and operational direction of the International Glaciological Expedition to Greenland (EGIG) at the request of the Snow and Ice Commission of the International Association for Scientific Hydrology: Austria, Denmark, France, Germany and Switzerland participated. Its operations, in 1957-60 and 1964-68, utilized several hundred men, air support, tracked vehicles, trailors on runners, sleds, etc. Its winter station, Jarl-Joset Station was constructed of prefabricated panels of a fiberglass-polyester composite material over a cellular core.
Micronutrient distributions in the east Siberian and Laptev Seas during summer 1963 / Codispoti, L.A. Richards, F.A.
Arctic, v. 21, no. 2, June 1968, p. 67-83, ill.
Contribution - University of Washington. Dept. of Oceanography, no. 461
ASTIS record 10033
Discusses phosphate, silicate, nitrate, temperature and salinity (T/S) data collected at 140 oceanographic stations occupied by the USCGC Northwind in these seas 7 Aug - 10 Sept 1963, cf No. 92559. These shallow seas deepen gradually toward the shelf edge, the East Siberian toward the E. Precipitation in the excess of evaporation should add ~50 km³/yr of fresh-water to the area; runoff from the seven rivers is ~250 km³/yr for the E Siberian and ~700 km³/yr for the Laptev Sea. Ice ~2 m thick forms in winter, summer melt is ~1 m, the difference compensated by net ice drift out of the area. Surface currents reduce the ice cover near shore in summer, but there is close-pack ice adjacent to Taymyr Peninsula. Annual and seasonal variations in air temperature, wind regime and river runoff obviate steady-state currents and T/S in the region. Silicate concentrations in the surface layer were almost always 5ug-at/liter, those of phosphate or nitrate or both were often so low as to suggest nutrient limitation of phytoplankton production. The nutrients in both seas are compared and discussed in relation to the intense stratification and turbidity of the waters, ice cover, and river discharge. The micronutrient distributions appear to be influenced mainly by summer phytoplankton bloom, respiratory processes, outflow of the Lena, and the different origins of the high-salinity waters found in the two seas.
Distribution des microéléments nutritifs dans la mer de Sibérie orientale et dans la mer de Laptev au cours de l'été 1963. L'éclosion estivale du plancton, les processus respiratoires, la décharge du fleuve Léna et les origines diverses des eaux de haute salinité semblent être les facteurs dominants qui influencent la distribution des microéléments nutritifs observée dans la mer de Sibérie orientale et dans la mer de Laptev.
The Peel Sound formation (Devonian) of Prince of Wales and adjacent islands : a preliminary report / Broad, D.S. Dineley, D.L. Miall, A.D.
Arctic, v. 21, no. 2, June 1968, p. 84-91, figures
ASTIS record 10034
Reports 1966-67 summer work in a long-range study by a Univ of Ottawa group. Discrete transitions between the laterally equivalent redbed-sandstone-carbonate facies of the Peel Sound Formation were revealed and evidence is strengthened of the role of fluvial, lagoonal and marine environments, controlled by movements of the Boothia Arch, in this sequence. Vertebrate faunas found mainly in large but isolate faunules include cyathaspidids, pteraspidids, heterostraci, osteostraci, athrodires, and a few osteichthyes; they appear to be equivalent to fauna of Downtonian and Dittonian stages.
Rapport préliminaire sur la formation de Peel Sound (Dévonien) dans l'île du Prince-de-Galles et les îles adjacentes. L'étude stratigraphique et sédimentologique de la formation de Peel Sound révèle des phases de passage discontinu entre trois faciès latéralement équivalents : graviers, arènes, et carbonates. On évalue le rôle des trois milieux, fluvial, de transition et marin, pour cette séquence, qui va des sédiments clastiques rouges (redbeds) aux sédiments marins, et pour ses faunes de vertébrés qui semblent toutes comparables à celles des roches Old Red Sandstone trouvées ailleurs. L'arc de Boothia a eu une importance primordiale dans le développement de ces faciès et peut-être aussi dans la distribution locale des vertébrés de même âge. Les sédiments clastiques de la formation de Peel Sound comprennent des lithologies facilement identifiables à l'aide des roches du Paléozoïque ancien et du Précambrien qui affleurent dans les îles Somerset et du Prince-de-Galles. Les faunes de vertébrés - surtout sous forme de larges faunules isolées - semblent équivalentes à celle des étages Downtonient et Dittonien. En plus de nombreux cyathaspididés et ptéraspididés, on trouve plusieurs formes nouvelles : il s'agit surtout d'hétérostraces, mais on découvre aussi des ostéostraces, des arthrodires, et quelques ostéichthyes.
Arctic field equipment / Ganton, J.H.
Arctic, v. 21, no. 2, June 1968, p. 92-97, ill.
ASTIS record 10035
Reports designs of equipment developed since 1959 for the Defence Research Establishment Pacific of the Defence Research Board of Canada, making underwater acoustic measurements on the sea ice in Canadian Arctic Islands waters. A triangular ice drill tip, and an inflatable plug to prevent transducers from being trapped below the ice by refreezing of the holes are described, as is with illus a recovery method for underwater equipment which is unattended for several months, the so-called rope trick. The last is an open-ended cylinder wrapped with nylon rope embedded in a silicon rubber having a low tensile strength. An aluminum sled with four rather than two runners reduces slamming by conforming to the ice roughness. A 7 x 4 x 1 ft, 100 lb emergency shelter termed instant igloo includes a kerosene-fired stove and a fiberglass-and-foam-plastic sandwich floor. A large main shelter and its heating and snow meltwater systems are also described.
Équipement de terrain dans l'Arctique. L'équipement décrit ici permet aux "scientifiques de fauteuil" de travailler et de vivre confortablement lors d'expéditions hivernales dans l'Arctique. Il comprend des méthodes de déposition et de récupération de sondes à travers la glace de mer, l'étude d'un traineau à marchandises et l'étude d'abris de toile légers et confortables.
Some observations of Alaskan glacier winds in midsummer / Streten, N.A. Wendler, G.
Arctic, v. 21, no. 2, June 1968, p. 98-102, ill.
ASTIS record 10036
Discusses 21 June-12 July observations at Castner Glacier in the Alaska Range and 16 July-11 Aug 1967 at Worthington Glacier in the Chugach Range. The purpose was to study the frequency and diurnal variation of glacier winds and differences due to location and exposure. In both cases max windspeed occurs slightly before sunrise and in the mid-afternoon. In the absence of a daytime glacier wind at Castner, a regular night downslope circulation is often observed.
Quelques observations sur les vents de glacier de l'Alaska au milieu de l'été. Les auteurs dévrivent les caractères des vents de glacier observés au milieu de l'été pour les glaciers Worthington et Castner. Chacun présente un double maximum quotidien de vélocité, soit juste avant l'aurore et vers le milieu de l'après-midi. Lorsqu'il n'y a pas de vent de glacier diurne à Castner, on observe souvent une circulation nocturne très régulière et descendante.
Ice islands, 1967 / Lindsay, D. Seifert, W. Anderson, N.
Arctic, v. 21, no. 2, June 1968, p. 103-106, figure, table
ASTIS record 10037
Five large ice islands broke away from the Ward Hunt Ice Shelf between 19 August 1961 and 18 April 1962. The largest of these was WH-5, which drifted through Nares Channel and eventually broke up. The Polar Continental Shelf Project (PCSP) has been following the movements of the four remaining ice islands WH-l, WH-2, WH-3, and WH-4 since the summer of 1963. By 1967 two of these islands, WH-3 and WH-4, had drifted out of the effective range of PCSP aircraft but the U.S. Naval Oceanographic Office "Birds Eye" flight, 3 August 1967, sighted an ice island (probably WH-4) at 71°55'N, 133°50'W. Previous to this the same organization located what was thought to be WH-3 at 73°28'N, 128°30'W on 3 April 1967. ... Of the four ice islands making up the WH group, WH-3 and WH-4 are the easiest to identify. WH-3 has a "suture" line running across one end of the ice island. WH-4 has a Jamesway hut near one corner and 10 empty 45-gallon gasoline drums lying in the shape of an "L" near the opposite corner. Because of the difficulties of positively identifying WH-l and WH-2, PCSP proposed a program to set up markers on both these islands. ... Although it is possible to estimate the rate and direction of ice island movement, it is important periodically to locate and identify particular islands. It was hoped that the drums set out by PCSP would assist the various sea ice reconnaissance groups to identify specific pieces of ice as they moved in the waters of the Arctic. Reports from the "Birds Eye" flights suggest that the specific patterns of drums are readily picked up by radar as well as the human eye, and that the drums will prove to be a very effective means of identifying ice islands.
A plant collection from the Wrangell Mountains, Alaska / Murray, D.F.
Arctic, v. 21, no. 2, June 1968, p. 106-110
ASTIS record 10038
Lists with brief descriptive and distributional notes, 115 vascular plant taxa collected as part of Arctic Institute of North America High Mountain Environment Project 1966-1967, from the Skolai Creek floodplain at 4800 ft, the steep slopes leading to and from the 5800 ft Chitistone Pass. Some of the species bridge occurrence gaps in populations of central Alaska and St Elias Mts of SW Yukon; some are known from so few localities that their Alaska distribution is uncertain; the remainder are widely distributed in most alpine areas of Alaska and the Yukon. A southern extension of Draba oblongata is noted.
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