Deformation by glacier-ice at Nicholson Peninsula, N.W.T., Canada / Mackay, J.R.
Arctic, v. 9, no. 4, 1956, p. 218-228, ill.
ASTIS record 9789
Two excellent examples of sediments deformed by glacier ice occur on Nicholson Peninsula, Mackenzie District (Liverpool Bay, 69 54 N, 129 W). Sediments, topography and structure of the Peninsula are described. Altitudes in the hilly northern half attain 200-300 ft. above sea level, whereas those in the south rarely exceed 30 ft. The hills were formed either by glacier ice moved against a topographic obstruction, resulting in a large push moraine, or by the drag effect of ice moving over weak strata. Deformation could have occurred during the last ice advance or earlier, probably in a single period of deformation, but whether the ground was frozen at the time is not evident.
The burin spall artifact / Giddings, J.L.
Arctic, v. 9, no. 4, 1956, p. 229-237, figure, plates
ASTIS record 9790
Old World burins, discovered in the northern Bering Sea area in 1948, subsequently have been found widely distributed in earlier sites in interior and eastern arctic America. Those of the Denbigh Flint Complex in Alaska are most varied in form. Burin spalls, thin slivers struck or pressed from burins, appear to have been used as tools themselves (over 200 from Denbigh) probably for engraving. Spalls collected in Greenland show similar characteristics.
Rates of tree growth and forest succession in the Anchorage-Matanuska Valley area / Reed, J.C. Harms, J.C.
Arctic, v. 9, no. 4, 1956, p. 238-248, ill., figures, map
ASTIS record 9791
Results of vegatation study by U.S. Army Map Service in summer 1955 in the area 61 07-45 N. approx. 149-150 W, from sea level to tree line at 1,500-2,000 ft. Eight principal forest cover types were distinguished. Sixty-five test plots were laid out, in which trees were counted, diameters and heights measured, and ages determined. Most important factors controlling distribution of species are altitude, drainage, fires, regenerative ability of species after fires, frequency of flooding; soil type and surficial geology are relatively unimportant. Growth rate depends on amount of sunlight and drainage; cottonwood and aspen have highest rates, birch and white spruce lower, black spruce lowest. Mixed birch-white spruce forest is generally self-perpetuating.
Some factors affecting the extent of ice in the Barents Sea area / Elliott, F.E.
Arctic, v. 9, no. 4, 1956, p. 249-257, ill.
ASTIS record 9792
Variations in flow of the Gulf Stream system and in transport of warm Atlantic water across the Wyville-Thomson Ridge northeastwards (via the North Cape Current) affect the areal extent of ice in the Barents Sea. Theoretical considerations and data are presented relating variations in the Florida Current (southern Gulf Stream system), as indicated by mean sea level changes at Charleston, S.C., and Miami, Fla., to ice conditions in the Barents Sea three years later. Low sea level at Charleston and Miami means strong flow of the Florida Current, contraction of the North Atlantic eddy, little warm Atlantic surface water discharged into the Barents Sea and thus more ice. Conversely, high sea level at Charleston and Miami results in more Atlantic water in Barents Sea and less ice. Relationship of ice to winds in Barents Sea area is also briefly discussed. In the period 1925-1938, good agreement between sea level, ice, and wind curves occurs in 12 of the 14 years.
The Greenland bird-banding system / Salomonsen, F.
Arctic, v. 9, no. 4, 1956, p. 258-264, figures, tables
ASTIS record 9793
Describes program of Ministeriet for Gronland and Universitetets Zoologiske Museum, Kobenhavn, initiated in 1946, with note of earlier banding by Dr. Bertelsen (reported in AB. No. 1475). Settlement and outpost managers (approx. 80) organize local banding on standard instructions in Eskimo and Danish (illus.) and forward records at end of season to the Museum. A total of 30,215 birds were ringed during 1946-1954, and 2,474 recovered, mostly shot and mostly (2,291) in Greenland. Data are tabulated for species (39), also recovery percentages for the more common forms. Migration routes disclosed are briefly discussed. An arctic tern, banded in Disko and recovered in Natal 18,000 km distant in less than three months, is signalized as the longest flight recorded by banding. Addendum offers further recovery data (abroad) and first results from East Greenland banding initiated in 1955.
Arctic, v. 9, no. 4, 1956, p. 268-272
ASTIS record 61057
The news includes: 1) an item on "the forgotten cairn" (Cape Britannia, Nunavut) where Noel Wright thinks there is still a chance of discovering a despatch from Sir John Franklin; 2) a description of the Arctic Institute of North America's waterfowl research project; 3) a report by Father Earnest Lepage on his botanical exploration along the Fort George River (La Grande Rivière), Sakami Lake, and Eastmain River; 4) details of biological work on Atlantic salmon and other fishes from the George River, northern Québec by G. Power; and 5) an announcement that opportunities exist for scientists, engineers, and technicians in the Antarctic program planned by the U.S. National Committee for the International Geophysical Year 1957-1958.
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