Arctic ice islands   /   Hattersley-Smith, G.   Koenig, L.S.   Greenaway, K.R.   Dunbar, M.
Arctic, v. 5, no. 2, July 1952, p. 66-103, ill., figures
ASTIS record 9700

Contains an account of the discovery of two groups of "ice islands" evidently originating on the north coast of Ellesmere Island. Their size, shape and surface structure, as well as tracking the drift of the large ice islands by planes and radar, are discussed by Major Koenig (from U.S.A.F. "Ptarmigan" and other flights), and by Squadron-Leader Greenaway (from Canadian flights and air photographs). Extensive documentation is presented (by Miss Dunbar) of 19th-20th century explorers' references to, and observations of such "islands". The probability of their origin from shelf ice and the character of the ice shelf of Northern Ellesmere is presented (by Mr. Hattersley-Smith). Special consideration is given to three very large islands (identified as T1 T2 T3), their discovery, positions and movement, description, seasonal changes, etc.; with additional data on smaller "islands," arranged according to the areas of their presence. From the air the "floating islands" are easily distinguishable from pack ice by their large size, homogenous appearance, very regular, characteristically patterned surface, and a fixed shape suggesting great thickness and hardness. Bibliography (about 40 items).

The fulmars of Cape Searle   /   Wynne-Edwards, V.C.
Arctic, v. 5, no. 2, July 1952, p. 104-117, ill. (some col.), figures
ASTIS record 9701

Contains summary of earlier observations and references to the fulmar colony at Cape Searle (67 13 N, 62 30 W) on the east coast of Baffin Island; a general account of the fulmar, its three geographical races, their characteristics (size of bill, build, coloration) and distribution (one in the North Pacific and two in the North Atlantic). Notes from the author's trip to Cape Searle in Aug. 1950, are given, his observations and estimate of the colony (minimum: upward of 200,000) its composition, etc. Bibliography (13 items).

Gravity measurements on the Barnes Icecap, Baffin Island   /   Littlewood, C.A.
Arctic, v. 5, no. 2, July 1952, p. 118-124, figures, tables
ASTIS record 9702

"A survey was made (during the Baffin Island Expedition of the Arctic Institute of North America, 1950) of the southeastern lobe of the Barnes Icecap to determine ice thickness and topographical features of the underlying rock surface by means of the gravimeter method. Gravity was measured at stations along 7 traverses (45 mi) with a Worden gravimeter no. 44 equipped with a high range reset mechanism and controlled by a dial calibrated in gravity units. The methods of calculation and the sources of errors are indicated. The measured surface elevations and the computed rock elevations and ice thicknesses for the traverses are shown diagrammatically, and tables present the principal facts for gravity stations. The greatest ice thickness indicated by the results is 1,533 ft. The greatest slope occurs where the rock elevation changes about 60 ft in 0.75 mi. The floor of the icecap near the middle of the lobe averages about 100 ft lower than near the margin."--SIPRE.

Northern news
Arctic, v. 5, no. 2, July 1952, p. 129-131
ASTIS record 60999

The news items include: 1) information from T. Lloyd about the discovery of Russian hydrographic bottles and barges off west Greenland, which presumably drifted from the Russian Arctic by way of the east Greenland coast and West Greenland Current; and 2) P.C. Bremner's description of the set-up and operation of a seismic observatory at Resolute Bay.

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